All Calculators

Browse our complete collection of 198 free online calculators on SolveCalculator

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Financial
72 calculators

Comprehensive financial calculators for loans, investments, retirement planning, and more.

Compound Interest Calculator – Investment Growth Tool
Calculate compound interest instantly. See how your investments grow over time w...
Mortgage Calculator – Free Home Loan Calculator
Quick and easy mortgage calculator. Estimate monthly payments, total interest, a...
Loan Calculator – Personal & Business Loan Payment Calculator
Calculate loan payments for personal loans, business loans, and more. Get instan...
Auto Loan Calculator – Car Payment Calculator
Calculate your car loan payments with our auto loan calculator. Include trade-in...
Retirement Calculator – Plan Your Financial Future
Calculate how much you need to save for retirement. Plan your financial future w...
Investment Calculator – Calculate Investment Returns
Calculate your investment returns and growth over time. Plan your investment str...
Savings Calculator – Calculate Savings Growth
Calculate how your savings will grow over time with interest. Plan your savings ...
Salary Calculator – Convert Hourly to Annual Pay
Convert between hourly, daily, weekly, monthly, and annual salary. Calculate you...
Discount Calculator – Calculate Sale Prices & Savings
Calculate discounts, sale prices, and savings instantly. Find out how much you s...
ROI Calculator – Return on Investment Calculator
Calculate return on investment (ROI) for any investment. Measure investment perf...
Interest Calculator – Simple & Compound Interest
Calculate simple and compound interest on loans and investments. Compare differe...
Payment Calculator – Monthly Payment Calculator
Calculate monthly payments for loans and mortgages. Determine payment amounts fo...
Amortization Calculator – Loan Amortization Schedule
Calculate loan amortization schedules. See how much principal and interest you p...
Currency Calculator – Exchange Rate Converter
Convert between different currencies. Get real-time exchange rates for internati...
Inflation Calculator – Purchasing Power Calculator
Calculate the impact of inflation on money over time. See how purchasing power c...
Finance Calculator – Time Value of Money
Calculate present value, future value, and payment amounts. Comprehensive financ...
Mortgage Payoff Calculator – Extra Payment Calculator
Calculate how extra payments can pay off your mortgage early. See interest savin...
Income Tax Calculator – Federal Tax Calculator
Calculate federal income taxes based on current tax brackets. Estimate your tax ...
401k Calculator – Retirement Savings Calculator
Calculate 401k growth with employer matching. Plan your retirement savings with ...
Interest Rate Calculator – Rate of Return Calculator
Calculate interest rates and rates of return. Determine the rate needed to reach...
Sales Tax Calculator – Tax Amount Calculator
Calculate sales tax on purchases. Determine total cost including tax for any pur...
House Affordability Calculator – Home Buying Calculator
Calculate how much house you can afford. Determine your home buying budget based...
Rent Calculator – Rental Affordability Calculator
Calculate how much rent you can afford. Determine your rental budget based on in...
Marriage Tax Calculator – Filing Status Calculator
Calculate tax implications of marriage. Compare filing jointly vs. separately to...
Estate Tax Calculator – Federal Estate Tax
Calculate federal estate tax liability. Determine estate tax owed on large estat...
Pension Calculator – Defined Benefit Calculator
Calculate pension benefits from defined benefit plans. Estimate monthly pension ...
Social Security Calculator – Benefit Estimator
Estimate Social Security retirement benefits. Calculate benefits based on earnin...
Annuity Calculator – Annuity Payment Calculator
Calculate annuity payments and values. Determine payment amounts for immediate a...
Annuity Payout Calculator – Retirement Income Calculator
Calculate annuity payout options. Compare different payout methods for retiremen...
Credit Card Calculator – Payoff Calculator
Calculate credit card payoff time and interest. See how long it takes to pay off...
Multiple Credit Cards Payoff Calculator
Calculate payoff strategy for multiple credit cards. Compare debt avalanche vs. ...
Debt Payoff Calculator – Debt Elimination Calculator
Calculate debt payoff timeline and interest savings. Plan your debt elimination ...
Debt Consolidation Calculator – Loan Consolidation
Calculate savings from debt consolidation. Compare consolidation loan vs. curren...
Loan Repayment Calculator – Payment Schedule Calculator
Calculate loan repayment schedules and payment amounts. Plan your loan repayment...
Student Loan Calculator – Education Loan Calculator
Calculate student loan payments and repayment options. Compare different repayme...
College Cost Calculator – Education Cost Projector
Calculate future college costs with inflation. Plan for education expenses and s...
Simple Interest Calculator – Interest Calculation Tool
Calculate simple interest on loans and investments. Compare simple vs. compound ...
CD Calculator – Certificate of Deposit Calculator
Calculate CD returns and maturity values. Compare different CD terms and rates....
Bond Calculator – Bond Price & Yield Calculator
Calculate bond prices, yields, and returns. Analyze bond investments and pricing...
Roth IRA Calculator – Tax-Free Retirement Calculator
Calculate Roth IRA growth and tax-free retirement income. Plan your Roth IRA con...
IRA Calculator – Traditional IRA Calculator
Calculate traditional IRA growth and tax benefits. Plan your IRA contributions a...
RMD Calculator – Required Minimum Distribution
Calculate required minimum distributions from retirement accounts. Plan for mand...
VAT Calculator – Value Added Tax Calculator
Calculate VAT (Value Added Tax) on purchases and sales. Add or remove VAT from p...
Cash Back vs Low Interest Calculator
Compare cash back offers vs. low interest financing. Determine which option save...
Auto Lease Calculator – Car Lease Payment Calculator
Calculate car lease payments and costs. Compare leasing vs. buying options....
Depreciation Calculator – Asset Depreciation Calculator
Calculate asset depreciation using different methods. Plan for business and tax ...
Average Return Calculator – Investment Return Calculator
Calculate average investment returns using arithmetic and geometric means. Analy...
Margin Calculator – Profit Margin Calculator
Calculate profit margins and markup percentages. Analyze business profitability ...
Business Loan Calculator – Commercial Loan Calculator
Calculate business loan payments and costs. Plan for commercial financing and bu...
Debt-to-Income Ratio Calculator – DTI Calculator
Calculate your debt-to-income ratio. Assess your borrowing capacity and financia...
Real Estate Investment Calculator – Property ROI Calculator
Calculate real estate investment returns and cash flow. Analyze rental property ...
Take Home Pay Calculator – Net Pay Calculator
Calculate take-home pay after taxes and deductions. Estimate your net paycheck a...
Personal Loan Calculator – Unsecured Loan Calculator
Calculate personal loan payments and costs. Compare personal loan options and ra...
Boat Loan Calculator – Marine Financing Calculator
Calculate boat loan payments and financing costs. Plan for marine vessel financi...
Equipment Lease Calculator – Business Lease Calculator
Calculate equipment lease payments and costs. Compare leasing vs. buying for bus...
Refinance Calculator – Mortgage Refinance Calculator
Calculate refinancing savings and break-even point. Determine if refinancing mak...
Budget Calculator – Monthly Budget Planner
Calculate and plan your monthly budget. Track income, expenses, and savings goal...
Rental Property Calculator – Investment Property ROI
Calculate rental property returns and cash-on-cash return. Analyze real estate i...
IRR Calculator – Internal Rate of Return Calculator
Calculate internal rate of return for investments. Analyze investment performanc...
APR Calculator – Annual Percentage Rate Calculator
Calculate the true APR including fees and costs. Compare loan offers with differ...
FHA Loan Calculator – FHA Mortgage Calculator
Calculate FHA loan payments including mortgage insurance. Determine FHA loan aff...
VA Mortgage Calculator – VA Loan Calculator
Calculate VA loan payments and benefits. Determine VA mortgage affordability for...
Down Payment Calculator – Home Down Payment Calculator
Calculate down payment requirements and closing costs. Plan for home purchase ex...
Rent vs Buy Calculator – Should I Rent or Buy?
Compare renting vs. buying a home. Determine which option is more cost-effective...
Payback Period Calculator – Investment Recovery Calculator
Calculate payback period for investments and projects. Determine how long to rec...
Present Value Calculator – PV Calculator
Calculate present value of future cash flows. Determine current worth of future ...
Future Value Calculator – FV Calculator
Calculate future value of investments. Determine what money will be worth in the...
Commission Calculator – Sales Commission Calculator
Calculate sales commissions and earnings. Determine commission payments for sale...
UK Mortgage Calculator – British Mortgage Calculator
Calculate UK mortgage payments and affordability. Plan for British property purc...
Canadian Mortgage Calculator – Canada Mortgage Calculator
Calculate Canadian mortgage payments with CMHC insurance. Plan for Canadian prop...
Mortgage Amortization Calculator – Payment Schedule
Calculate mortgage amortization schedule. See principal and interest breakdown o...
Percent Off Calculator – Discount Calculator
Calculate percent off discounts and sale prices. Determine savings from percenta...

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Health
31 calculators

Health and fitness calculators for BMI, calories, body composition, and wellness tracking.

BMI Calculator – Body Mass Index Tool | Free & Accurate
Calculate your BMI (Body Mass Index) instantly. Understand your weight status an...
Calorie Calculator – Daily Calorie Needs Calculator
Calculate daily calorie needs instantly. Determine calories for weight loss, mai...
Body Fat Calculator – US Navy Method
Calculate your body fat percentage using the US Navy method. Accurate body compo...
BMR Calculator – Basal Metabolic Rate Calculator
Calculate your Basal Metabolic Rate (BMR) - the number of calories your body bur...
Macro Calculator – Macronutrient Calculator
Calculate your optimal macronutrient distribution (protein, carbs, fats) based o...
Ideal Weight Calculator – Healthy Weight Range
Calculate your ideal weight range based on height, gender, and body frame. Multi...
Pregnancy Calculator – Due Date Calculator
Calculate your pregnancy due date, current week, and important milestones based ...
Pregnancy Weight Gain Calculator
Calculate recommended weight gain during pregnancy based on your pre-pregnancy B...
Due Date Calculator – Pregnancy Due Date Estimator
Calculate your pregnancy due date using last menstrual period or conception date...
Running Pace Calculator – Time, Distance, Pace
Calculate running pace, time, or distance. Perfect for training plans, race prep...
Army Body Fat Calculator – Military Standards
Calculate body fat percentage using US Army standards and measurements. Meet mil...
Lean Body Mass Calculator
Calculate your lean body mass (muscle, bones, organs) by subtracting body fat fr...
Calories Burned Calculator – Exercise & Activity
Calculate calories burned during various exercises and activities. Accurate esti...
One Rep Max Calculator – 1RM Strength Calculator
Calculate your one-rep max (1RM) for weightlifting using multiple proven formula...
Target Heart Rate Calculator – Training Zones
Calculate your target heart rate zones for different training intensities. Optim...
TDEE Calculator – Total Daily Energy Expenditure
Calculate your Total Daily Energy Expenditure (TDEE) including BMR and activity ...
Ovulation Calculator – Fertility Window Calculator
Calculate your ovulation date and fertile window based on menstrual cycle. Plan ...
Conception Calculator – Conception Date Estimator
Calculate conception date from due date or birth date. Estimate when conception ...
Period Calculator – Next Period Predictor
Calculate when your next period is due based on your cycle length and last perio...
GFR Calculator – Kidney Function Calculator
Calculate Glomerular Filtration Rate (GFR) to assess kidney function using the C...
Body Type Calculator – Somatotype Calculator
Determine your body type (ectomorph, mesomorph, endomorph) based on measurements...
BSA Calculator – Body Surface Area Calculator
Calculate Body Surface Area (BSA) using multiple formulas. Essential for medical...
BAC Calculator – Blood Alcohol Content Calculator
Calculate Blood Alcohol Content (BAC) based on drinks consumed, weight, gender, ...
Weight Watchers Points Calculator
Calculate Weight Watchers SmartPoints for foods based on calories, saturated fat...
Pregnancy Conception Calculator
Calculate conception date from current pregnancy week or due date. Estimate when...
Carbohydrate Calculator – Daily Carb Needs
Calculate optimal daily carbohydrate intake based on weight, activity level, and...
Healthy Weight Calculator – Ideal Weight Range
Calculate your healthy weight range based on BMI guidelines. Determine target we...
Protein Calculator – Daily Protein Needs
Calculate optimal daily protein intake based on weight, activity level, and goal...
Fat Intake Calculator – Daily Fat Needs
Calculate optimal daily fat intake based on calories and health goals. Balance e...
BMI Calculator with Underweight Assessment
Calculate BMI with focus on underweight categories and health risks. Educational...
Overweight Calculator – Excess Weight Calculator
Calculate how much weight is above the healthy range. Determine excess weight fo...

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Math
43 calculators

Mathematical calculators for equations, percentages, and various mathematical operations.

Scientific Calculator – Advanced Math Functions
Advanced scientific calculator with trigonometric functions, logarithms, exponen...
Fraction Calculator – Add, Subtract, Multiply, Divide
Add, subtract, multiply, and divide fractions with our comprehensive fraction ca...
Percentage Calculator – Calculate Percentages, Discounts, & Changes
Calculate percentages, percentage changes, discounts, and more with our free onl...
Triangle Calculator – Area, Perimeter, Angles
Calculate triangle area, perimeter, angles, and sides using various methods. Sup...
Volume Calculator – 3D Shapes Volume
Calculate the volume of various 3D shapes including spheres, cubes, cylinders, c...
Standard Deviation Calculator – Population & Sample
Calculate standard deviation for sample or population data sets. Includes varian...
Random Number Generator – True Random Numbers
Generate random numbers within specified ranges. Supports unique numbers, multip...
Number Sequence Calculator – Find Next Terms
Find the next terms in arithmetic, geometric, and other number sequences. Identi...
Percent Error Calculator – Experimental vs Theoretical
Calculate percent error between experimental and theoretical values. Essential f...
Exponent Calculator – Powers and Roots
Calculate powers, exponents, and roots with our comprehensive exponent calculato...
Binary Calculator – Binary to Decimal Converter
Convert between binary and decimal numbers, perform binary arithmetic operations...
Hexadecimal Calculator – Hex Converter
Convert between hexadecimal, decimal, and binary numbers. Perform hex arithmetic...
Half-Life Calculator – Radioactive Decay
Calculate radioactive decay, half-life, and remaining quantities. Essential for ...
Quadratic Formula Calculator – Solve ax²+bx+c=0
Solve quadratic equations using the quadratic formula. Find roots, discriminant,...
Slope Calculator – Find Slope Between Two Points
Calculate the slope between two points, find slope-intercept form, and understan...
Logarithm Calculator – Log, Ln, and Custom Base
Calculate logarithms with any base including common log (base 10), natural log (...
Area Calculator – Calculate Area of Shapes
Calculate the area of various geometric shapes including circles, rectangles, tr...
Sample Size Calculator – Statistical Sample Size
Calculate the required sample size for surveys and research studies. Determine s...
Probability Calculator – Basic & Advanced Probability
Calculate basic probability, combinations, permutations, and complex probability...
Statistics Calculator – Mean, Median, Mode, Range
Calculate descriptive statistics including mean, median, mode, range, variance, ...
Permutation and Combination Calculator – nPr and nCr
Calculate permutations (nPr) and combinations (nCr) for probability and statisti...
Z-Score Calculator – Standard Score Calculator
Calculate z-scores, find probabilities, and convert between raw scores and stand...
Confidence Interval Calculator – Statistical Intervals
Calculate confidence intervals for means and proportions. Determine margin of er...
Ratio Calculator – Simplify and Compare Ratios
Simplify ratios, solve proportions, and find equivalent ratios. Essential for ma...
Distance Calculator – 2D and 3D Distance
Calculate distance between two points in 2D or 3D space using the distance formu...
Circle Calculator – Area, Circumference, Radius
Calculate circle properties including area, circumference, radius, and diameter....
Surface Area Calculator – 3D Shape Surface Area
Calculate surface area of 3D shapes including spheres, cubes, cylinders, cones, ...
Pythagorean Theorem Calculator – Find Missing Side
Calculate missing sides of right triangles using the Pythagorean theorem. Find h...
Right Triangle Calculator – Complete Triangle Solver
Solve right triangles with any combination of sides and angles. Calculate missin...
Root Calculator – Square Root, Cube Root, nth Root
Calculate square roots, cube roots, and nth roots of any number. Supports positi...
LCM Calculator – Least Common Multiple
Find the least common multiple (LCM) of two or more numbers. Essential for fract...
GCF Calculator – Greatest Common Factor
Find the greatest common factor (GCF) or greatest common divisor (GCD) of two or...
Factor Calculator – Find All Factors
Find all factors of a number including prime factorization. Discover divisors, f...
Rounding Calculator – Round Numbers to Any Place
Round numbers to any decimal place, significant figures, or nearest integer. Sup...
Matrix Calculator – Matrix Operations
Perform matrix operations including addition, subtraction, multiplication, deter...
Scientific Notation Calculator – Convert & Calculate
Convert between standard and scientific notation, perform arithmetic operations ...
Big Number Calculator – Large Number Arithmetic
Perform arithmetic operations with very large numbers that exceed standard calcu...
Prime Factorization Calculator – Factor into Primes
Find the prime factorization of any number. Break down composite numbers into th...
Common Factor Calculator – Find Shared Factors
Find all common factors of two or more numbers. Identify shared divisors and und...
Basic Calculator – Simple Arithmetic
Perform basic arithmetic operations: addition, subtraction, multiplication, and ...
Long Division Calculator – Step by Step Division
Perform long division with detailed steps. Calculate quotient and remainder for ...
Average Calculator – Mean, Median, Mode, Range
Calculate mean, median, mode, and range for any set of numbers. Comprehensive st...
P-Value Calculator – Statistical Significance
Calculate p-values for statistical tests including z-tests, t-tests, and chi-squ...

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Other
52 calculators

Additional specialized calculators for various purposes and calculations.

Age Calculator – Calculate Your Exact Age
Calculate your exact age in years, months, days, hours, and minutes. Our precise...
Date Calculator – Add or Subtract Days, Months, Years
Calculate dates by adding or subtracting days, weeks, months, or years. Find the...
Time Calculator – Add, Subtract, and Convert Time
Calculate time differences, add or subtract hours, minutes, and seconds. Perfect...
Hours Calculator – Work Hours and Timesheet Calculator
Calculate total work hours, time differences, and timesheet calculations. Perfec...
GPA Calculator – Grade Point Average Calculator
Calculate your GPA (Grade Point Average) with support for different grading scal...
Grade Calculator – What Grade Do I Need?
Calculate what grade you need on your final exam to achieve your desired course ...
Height Calculator – Convert Feet, Inches, and Centimeters
Convert height between different units including feet and inches, centimeters, a...
Concrete Calculator – Calculate Concrete Volume and Cost
Calculate concrete volume needed for slabs, driveways, and foundations. Determin...
IP Subnet Calculator – Network Subnet Calculator
Calculate IP subnet information including network address, broadcast address, ho...
Bra Size Calculator – Find Your Perfect Bra Size
Calculate your correct bra size using band and bust measurements. Get accurate s...
Secure Password Generator – Create Strong Passwords
Generate random, secure passwords with customizable length and complexity. Creat...
Dice Roller – Virtual Dice Rolling Simulator
Roll virtual dice with customizable number of dice and sides. Perfect for board ...
Unit Conversion Calculator – Convert Any Unit
Convert between different units of measurement including length, weight, tempera...
Fuel Cost Calculator – Trip Cost and Gas Mileage
Calculate fuel costs for trips based on distance, fuel efficiency, and gas price...
Voltage Drop Calculator – Electrical Wire Calculator
Calculate voltage drop in electrical circuits based on wire gauge, length, curre...
BTU Calculator – Air Conditioning and Heating Calculator
Calculate BTU requirements for heating and cooling systems. Determine the right ...
Square Footage Calculator – Area Calculator
Calculate square footage and area for rooms, houses, and land. Support for vario...
Time Card Calculator – Timesheet and Payroll Calculator
Calculate total work hours from time entries, breaks, and overtime. Perfect for ...
Time Zone Calculator – World Time Converter
Convert time between different time zones around the world. Perfect for scheduli...
Love Calculator – Compatibility Calculator
Calculate love compatibility between two people based on their names. Fun entert...
GDP Calculator – Gross Domestic Product Calculator
Calculate GDP using the expenditure approach with consumption, investment, gover...
Gas Mileage Calculator – MPG and Fuel Efficiency
Calculate your vehicle's gas mileage (MPG) and fuel efficiency. Track fuel consu...
Horsepower Calculator – Engine Power Calculator
Calculate horsepower from torque and RPM measurements. Essential tool for automo...
Engine Horsepower Calculator – Engine Power Estimator
Estimate engine horsepower based on displacement, compression ratio, and efficie...
Stair Calculator – Staircase Design Calculator
Calculate stair dimensions including number of steps, rise, run, and total stair...
Resistor Calculator – Color Code and Value Calculator
Calculate resistor values from color codes and determine color codes from resist...
Ohm's Law Calculator – Voltage, Current, Resistance, Power
Calculate voltage, current, resistance, and power using Ohm's Law. Essential too...
Electricity Cost Calculator – Power Consumption Calculator
Calculate electricity costs and power consumption for appliances and devices. Es...
Shoe Size Conversion Calculator – International Sizing
Convert shoe sizes between US, UK, European, and other international sizing syst...
Tip Calculator – Restaurant and Service Tip Calculator
Calculate tips and split bills easily with our comprehensive tip calculator. Det...
Mileage Calculator – Distance and Route Calculator
Calculate distance between locations for travel planning, mileage reimbursement,...
Density Calculator – Mass, Volume, Density Calculator
Calculate density, mass, or volume using the density formula. Essential tool for...
Mass Calculator – Calculate Mass from Density and Volume
Calculate mass using density and volume measurements. Essential tool for chemist...
Weight Calculator – Calculate Weight from Mass and Gravity
Calculate weight using mass and gravitational acceleration. Compare weights on d...
Speed Calculator – Velocity, Distance, Time Calculator
Calculate speed, distance, or time using the speed formula. Convert between diff...
Molarity Calculator – Molar Concentration Calculator
Calculate molarity, moles, volume, or mass for chemical solutions. Essential too...
Molecular Weight Calculator – Molar Mass Calculator
Calculate molecular weight and molar mass from chemical formulas. Essential tool...
Roman Numeral Converter – Numbers to Roman Numerals
Convert between Arabic numbers and Roman numerals. Perfect for historical dates,...
Golf Handicap Calculator – USGA Handicap Calculator
Calculate your golf handicap using USGA rules and scoring differentials. Track y...
Sleep Calculator – Sleep Cycle and Bedtime Calculator
Calculate optimal bedtime and wake times based on sleep cycles. Improve your sle...
Tire Size Calculator – Tire Dimension Calculator
Calculate tire dimensions including overall diameter, circumference, and revolut...
Roofing Calculator – Roof Area and Materials Calculator
Calculate roof area, materials needed, and costs for roofing projects. Account f...
Tile Calculator – Flooring Tile Calculator
Calculate the number of tiles needed for flooring projects. Account for tile siz...
Mulch Calculator – Landscaping Mulch Calculator
Calculate the amount of mulch needed for landscaping projects. Determine cubic y...
Gravel Calculator – Driveway and Landscaping Gravel
Calculate the amount of gravel needed for driveways, paths, and landscaping proj...
Wind Chill Calculator – Apparent Temperature Calculator
Calculate wind chill temperature and apparent temperature based on air temperatu...
Heat Index Calculator – Apparent Temperature Calculator
Calculate heat index and apparent temperature based on air temperature and humid...
Dew Point Calculator – Humidity and Dew Point Calculator
Calculate dew point temperature from air temperature and humidity. Understand mo...
Bandwidth Calculator – Data Transfer Calculator
Calculate bandwidth requirements, transfer times, and data usage. Essential for ...
Time Duration Calculator – Time Difference Calculator
Calculate time duration between two dates and times. Account for business days, ...
Day Counter – Days Between Dates Calculator
Count days between dates, days until an event, or days since a date. Perfect for...
Day of the Week Calculator – What Day Calculator
Find out what day of the week any date falls on. Perfect for historical research...