Education & Math ToolsPrivate by design
Significant Figures Calculator
Enter a number and a target number of significant figures to round it correctly.
How to use this tool
- 1Enter your number.
- 2Enter the number of significant figures wanted.
- 3See the rounded result.
Frequently asked questions
Why does the result sometimes show scientific notation?+
That's the correct way to preserve exactly the requested number of significant figures for very large or very small numbers — not a display error.
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