What is scientific notation?

A number written as a coefficient between 1 and 10 times a power of ten, e.g. 4,500 = 4.5 × 10³. It makes very large and very small numbers compact.

How is engineering notation different?

Engineering notation restricts the exponent to multiples of three (10³, 10⁶, 10⁻³…), so it lines up with SI prefixes like kilo, mega, and milli.

They set how many digits of the coefficient are kept. Choosing fewer significant figures rounds the coefficient accordingly.

No. The conversion is arithmetic done in your browser; the number you enter never leaves the page.

Math & Science

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Convert numbers to and from scientific notation and engineering notation. Shows significant figures. Free, browser-based.

Standard number

What is scientific notation?: A number written as a coefficient between 1 and 10 times a power of ten, e.g. 4,500 = 4.5 × 10³. It makes very large and very small numbers compact.
How is engineering notation different?: Engineering notation restricts the exponent to multiples of three (10³, 10⁶, 10⁻³…), so it lines up with SI prefixes like kilo, mega, and milli.
What do significant figures control?: They set how many digits of the coefficient are kept. Choosing fewer significant figures rounds the coefficient accordingly.
Is the value I convert transmitted anywhere?: No. The conversion is arithmetic done in your browser; the number you enter never leaves the page.

guide

How to Convert Scientific Notation Free — Standard & Engineering

Convert between standard notation and scientific notation in your browser. Also shows engineering notation and significant figure count.