Calculyn

Rounding Calculator

Round any number to decimal places, tens, hundreds, or significant figures.

Results update as you type.

Rounded to 2 decimal places

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Quick answer

3.14159 to 2 decimal places → 3.14; to the nearest 10 → 0; to 3 significant figures → 3.14.

How it works

Standard rounding: 5 or more rounds up. Also shows the number truncated down and up to 2 decimals for reference.

Formula

Round to nearest: look at the next digit — 5 or above rounds up.

Assumptions & limitations

  • Results are rounded for display.

Frequently asked questions

What are significant figures?

The digits that carry meaning: 0.004560 to 3 significant figures is 0.00456.