Plain or scientific notation both work — e.g. 0.004560 or 1.20e3.
Significant figures
—
Rounded value
—
Step by step
Count the significant figures in any number, and round a number to a chosen number of significant figures.
Plain or scientific notation both work — e.g. 0.004560 or 1.20e3.
Step by step
Type a number to count its significant figures, and set how many to round to.
Type it exactly as written — trailing zeros after a decimal point count, so 0.004560 is different from 0.00456.
The significant-figure count appears first, following the standard rules for leading, captive and trailing zeros.
Set the target number of significant figures to see the rounded value.