Rounding Calculator

Round numbers by decimal place, place value, or significant figures from one input.

Preparing Rounding Calculator

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Input

Enter the number, pick the rounding rule, and choose the place or precision you want to round to. You will see the result first and the step-by-step solution below.

Input summary

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Step by Step Calculation

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Calculate first and the full working will appear below automatically.

How to use Rounding Calculator

Choose how you want the number rounded, and the calculator will apply the selected precision rule automatically.

What this calculator is for

This calculator is for homework, measurement reporting, and data presentation when a result needs to follow a specific rounding rule instead of showing every digit.

Tips

Know whether the problem wants decimal places, place value, or significant figures before rounding.
Rounding changes presentation, so keep enough digits during earlier calculations.
For significant figures, leading zeros do not count as significant digits.