Scientific Notation Calculator

Use this scientific notation calculator to rewrite very large or very small numbers in a compact form that is easier to read and compare. It is useful for homework, lab reports, engineering notes, data tables, physics, chemistry, finance, and any workflow where powers of ten matter.

The tool works both ways. Enter a regular decimal number to get normalized scientific notation, engineering notation, e notation, coefficient, and exponent. Or paste a value like 4.56 × 10^-3 or 4.56e-3 to turn it back into decimal form using your selected number of significant figures.

This saves time when checking calculations, standardizing answers, and comparing values across very different scales. If you need a quick conversion without moving the decimal point by hand, this calculator gives you a clean result immediately.