Rounding Calculator (Decimals, Nearest 10, Significant Figures)
Math ToolsRound to decimals, nearest 10/100, sig figs
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →Rounding Calculator (Decimals, Nearest 10, Significant Figures) — at a glance
Round a number exactly the way you need — decimals, tens or significant figures.
How to use it — step by step
A number and how you want to round it.
Enter your numbers
Fill in the fields — sensible example values are already filled in.
Pick your options
Choose any dropdowns or switches that apply to your case.
Round Number
Press the button. The result is created instantly on your device.
Read the answer
The main answer is shown big at the top, with details below it.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What is a significant figure?+
A digit that carries meaning, counted from the first non-zero digit.
How is 2.5 rounded?+
To 3 with round-half-up.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.