Significant Figures
Free Significant Figures calculator with clear step-by-step results.
About Significant Figures
Significant figures reflect the precision of a measurement.
Formula
Formula
Rounds to N significant figures
Worked example
With the default values below, Significant Figures returns Rounded of 1,230.000000. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Number
- 1,234.567
- Significant figuresaccepts 1–12
- 3
Results
- Rounded
- 1,230.000000
- Scientific Notation
- 1.23 × 10^3
- Figures
- 3.00
Step by step
- 1Values used
- 2Formula
- 3Rounded= 1,230.000000
- 4Scientific Notation= 1.23 × 10^3
- 5Figures= 3
Assumptions and limits
- The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 6 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How does this calculator work?
Significant figures reflect the precision of a measurement.
Why does this matter?
Zero is handled as the limiting case.