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Calculate your exact age in years, months, days, hours, and minutes. Our precise age calculator determines your age from birth date to any specified date with detailed breakdowns.

Calculate dates by adding or subtracting days, weeks, months, or years. Find the difference between dates, determine future or past dates, and plan events with our comprehensive date calculator.

Calculate time differences, add or subtract hours, minutes, and seconds. Perfect for time tracking, scheduling, and duration calculations with support for various time formats.

Calculate total work hours, time differences, and timesheet calculations. Perfect for payroll, project tracking, and time management with support for breaks and overtime.

Calculate total work hours from time entries, breaks, and overtime. Perfect for payroll processing, employee time tracking, and timesheet management.

Convert time between different time zones around the world. Perfect for scheduling international meetings, travel planning, and global communication.

Calculate time duration between two dates and times. Account for business days, working hours, and time zones for accurate time calculations.

Count days between dates, days until an event, or days since a date. Perfect for event planning, project deadlines, and milestone tracking.

Find out what day of the week any date falls on. Perfect for historical research, planning events, and determining weekdays for any date.

Calculate concrete volume needed for slabs, driveways, and foundations. Determine cubic yards, bags needed, and estimated costs for your concrete projects.

Calculate BTU requirements for heating and cooling systems. Determine the right size air conditioner or heater for your room or building with our BTU calculator.

Calculate square footage and area for rooms, houses, and land. Support for various shapes including rectangles, circles, and triangles with multiple unit options.

Calculate stair dimensions including number of steps, rise, run, and total staircase measurements. Essential tool for construction and home improvement projects.

Calculate roof area, materials needed, and costs for roofing projects. Account for roof pitch, waste factors, and different roofing materials.

Calculate the number of tiles needed for flooring projects. Account for tile size, room dimensions, and waste factors for accurate material estimates.

Calculate the amount of mulch needed for landscaping projects. Determine cubic yards of mulch required based on area and desired depth.

Calculate the amount of gravel needed for driveways, paths, and landscaping projects. Determine cubic yards and tons of gravel required.

Convert height between different units including feet and inches, centimeters, and meters. Perfect for medical forms, international applications, and height comparisons.

Convert between different units of measurement including length, weight, temperature, volume, and area. Comprehensive unit converter with accurate conversion factors.

Convert shoe sizes between US, UK, European, and other international sizing systems. Perfect for online shopping and international travel.

Calculate density, mass, or volume using the density formula. Essential tool for chemistry, physics, and engineering applications.

Calculate mass using density and volume measurements. Essential tool for chemistry, physics, and engineering calculations.

Calculate weight using mass and gravitational acceleration. Compare weights on different planets and understand the difference between mass and weight.

Calculate speed, distance, or time using the speed formula. Convert between different units and solve motion problems for physics and everyday applications.

Calculate molarity, moles, volume, or mass for chemical solutions. Essential tool for chemistry students and laboratory professionals.

Calculate molecular weight and molar mass from chemical formulas. Essential tool for chemistry students and professionals working with chemical compounds.

Convert between Arabic numbers and Roman numerals. Perfect for historical dates, clock faces, and educational purposes with support for numbers 1-3999.

Calculate voltage drop in electrical circuits based on wire gauge, length, current, and voltage. Essential tool for electricians and electrical engineers.

Calculate resistor values from color codes and determine color codes from resistance values. Essential tool for electronics students and professionals.

Calculate voltage, current, resistance, and power using Ohm's Law. Essential tool for electrical engineers, students, and electronics enthusiasts.

Calculate IP subnet information including network address, broadcast address, host range, and subnet mask. Essential tool for network administrators and IT professionals.

Generate random, secure passwords with customizable length and complexity. Create strong, reliable passwords for all your accounts with our advanced password generator.

Calculate bandwidth requirements, transfer times, and data usage. Essential for network planning, streaming, and internet applications.

Calculate your correct bra size using band and bust measurements. Get accurate sizing recommendations for better comfort and fit with our comprehensive bra size calculator.

Calculate electricity costs and power consumption for appliances and devices. Estimate monthly electric bills and energy usage costs.

Calculate tips and split bills easily with our comprehensive tip calculator. Determine appropriate tip amounts, split costs among multiple people, and calculate total costs.

Calculate optimal bedtime and wake times based on sleep cycles. Improve your sleep quality by timing your sleep to natural 90-minute cycles.

Calculate wind chill temperature and apparent temperature based on air temperature and wind speed. Essential for weather planning and safety.

Calculate heat index and apparent temperature based on air temperature and humidity. Essential for hot weather safety and comfort planning.

Calculate dew point temperature from air temperature and humidity. Understand moisture levels and comfort conditions for weather and HVAC applications.

Calculate fuel costs for trips based on distance, fuel efficiency, and gas prices. Plan your travel budget and compare fuel costs for different vehicles.

Calculate your vehicle's gas mileage (MPG) and fuel efficiency. Track fuel consumption, compare vehicles, and monitor your car's performance over time.

Calculate horsepower from torque and RPM measurements. Essential tool for automotive enthusiasts, mechanics, and engineers working with engines and motors.

Estimate engine horsepower based on displacement, compression ratio, and efficiency factors. Useful for engine builders and automotive enthusiasts.

Calculate distance between locations for travel planning, mileage reimbursement, and trip planning. Estimate driving distances and travel times.

Calculate tire dimensions including overall diameter, circumference, and revolutions per mile from tire size markings. Essential for automotive applications.

Roll virtual dice with customizable number of dice and sides. Perfect for board games, tabletop RPGs, and any situation where you need random dice rolls.

Calculate love compatibility between two people based on their names. Fun entertainment tool for couples, friends, and anyone curious about relationship compatibility.

Calculate your golf handicap using USGA rules and scoring differentials. Track your golf performance and determine your official handicap index.