What's the difference between decimal places and significant figures?

Decimal places count digits after the decimal point. Significant figures count all meaningful digits from the first non-zero digit. For 0.00123, that's 5 decimal places but 3 significant figures.

When should I use significant figures vs decimal places?

Use significant figures in scientific calculations to reflect measurement precision. Use decimal places for financial calculations, grades, or when you need a specific number of digits after the decimal point.

What happens when rounding 0.5?

Standard rounding rounds 0.5 up to 1. However, some systems use "banker's rounding" (round to even) where 0.5 rounds to 0 and 1.5 rounds to 2. This calculator uses standard rounding.

How do I round very large or very small numbers?

For very large numbers, consider rounding to thousands, millions, etc. For very small numbers, use significant figures to maintain precision. Scientific notation can help manage extreme values.

Rounding Calculator – Round Numbers to Any Place

Round numbers to any decimal place, significant figures, or nearest integer. Supports various rounding methods and precision levels.

Rounding Calculator – Round Numbers to Any Place

Round numbers to any decimal place, significant figures, or nearest integer. Supports various rounding methods and precision levels.

Number*

Number to round

Rounding Type*

How to round the number

Precision

Number of decimal places or significant figures

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Math visualization will appear here

Understanding Rounding

Rounding simplifies numbers by reducing the number of digits while keeping the value close to the original. It's essential for practical calculations, measurements, and presenting data in a more readable format.

Rounding Rules

Standard rounding rules:

If the digit to be dropped is 5 or greater, round up
If the digit to be dropped is less than 5, round down
For significant figures, count from the first non-zero digit
Trailing zeros after a decimal point are significant
Leading zeros are never significant

How to Use This Calculator

Follow these simple steps to get accurate results:

Enter your number
Enter your rounding type
Enter your precision
Click the "Calculate" button to see your results
Review the detailed breakdown and explanation

Why Use Our Rounding Calculator – Round Numbers to Any Place?

100% free and no registration required
Instant, accurate calculations with professional formulas
Mobile-friendly design that works on any device
Privacy-focused - your data never leaves your browser
Educational content to help you understand the results

Frequently Asked Questions

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