Calculatorism

Significant Figures Calculator

Round a number to a given number of significant figures.

Input Data

X
N

Results

Rounded value.
0.00457
Explanatory note about the result.
0.004567 取 3 位有效數字 = 0.00457。

At a glance:Keep n meaningful digits from the first non-zero digit, applying rounding. Complements rounding and scientific-notation.

Formula

result = round to n sig figs.

How to Use

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

Case Studies

0.004567, n=2

0.0046.

FAQ

Trailing zeros?

Significant only if after a decimal point or explicitly indicated.

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:Significant Figures Calculator（/math/significant-figures）。