CalcPenguin

Rounding Calculator

Round any number to decimal places, significant figures or the nearest 10, 100 or 1,000, with normal or banker's rounding.

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Rounded

3.14

Always up (ceiling)
3.15
Always down (floor)
3.14

3.14159 rounded to 2 decimal places is 3.14.

How it's worked out

  1. Rounding position2 decimal places
  2. Look at the next digit5 or more rounds up, less than 5 rounds down3.14

How rounding works

Find the last digit you're keeping, then look at the next one. 5 or more rounds up; less than 5 rounds down. With banker's rounding, an exact half goes to the even digit.

Worked examples

3.14159 to 2 decimal places is 3.14. 1,250 to the nearest 100 is 1,300 (or 1,200 with banker's rounding). 12,345 to 2 significant figures is 12,000.

Questions people ask

How do I round to 2 decimal places?

Look at the third decimal digit: 5 or more rounds up, less than 5 rounds down. 3.14159 becomes 3.14.

What are significant figures?

The digits that carry meaning, counted from the first non-zero digit. 12,345 to 2 significant figures is 12,000, and 0.004567 is 0.0046.

What is banker's rounding?

When a number is exactly halfway, it rounds to the even neighbour: 2.5 becomes 2 and 3.5 becomes 4. It avoids a slight upward bias when adding many rounded numbers.

Formula and rules last checked 25 October 2026Written and tested by the CalcPenguin teamReport a problem