Scientific Notation Converter
Convert numbers to and from scientific notation (e.g. 0.000452 = 4.52 × 10⁻⁴) and engineering notation, with a chosen number of significant figures.
How to use
- 1Enter a number in any form — 0.000452, 4.52e-4 or 4.52 × 10^-4.
- 2Choose how many significant figures to show.
How it's calculated
x = m × 10ⁿ with 1 ≤ |m| < 10. Engineering notation uses exponents that are multiples of 3.
Frequently asked questions
What is standard form?
In the UK, 'standard form' means scientific notation. In the US it can mean writing a number out in full.
What is E notation?
Calculators and code write 4.52 × 10⁻⁴ as 4.52E-4.
Why use engineering notation?
Its exponents match SI prefixes: 10³ = kilo, 10⁻⁶ = micro, and so on.