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Significant Figures Calculator
Count the significant figures in a number, or round a number to a chosen number of them.
Result…
How it's calculated
Non-zero digits count. Zeros count between digits, and at the end only after a decimal point.
Significant figures show how precisely a measurement is known. "1200" is read as 2 figures; write "1200." or 1.200 × 10³ to show 4.
Your numbers, step by step
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