Calculatorism

Round Number Calculator

Round a number to a chosen number of decimal places.

Input Data

X
D

Results

Rounded value.
3.14
Explanatory note about the result.
3.14159 捨入到 2 位小數 = 3.14。

At a glance:Round x to d decimal places (round half up). Complements rounding and significant-figures.

Formula

rounded = round(x·10^d)/10^d.

How to Use

  1. Enter x and d.
  2. The tool returns the rounded value.

Case Studies

3.14159, d=2

3.14.

FAQ

Rounding mode?

Half-up (0.5 rounds away from zero) by default.

Related Tools

References

Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.

Found a problem with the results?

If this calculator's result is wrong, or you have any question about the calculation logic, please let us know. You are viewing:Round Number Calculator（/math/round-number）。