Engineering Notation Converter

How to write engineering notation

1. Type a number.
2. Add a unit if you like, such as F or Ω.
3. See it with an exponent that is a multiple of three and with its SI prefix.

Frequently asked questions

How is it different from scientific notation?

The exponent is always a multiple of three, so it matches SI prefixes: 0.0047 is 4.7 × 10⁻³, or 4.7 m (milli).

Which SI prefix goes with which exponent?

k is 10³, M is 10⁶, G is 10⁹, m is 10⁻³, µ is 10⁻⁶, n is 10⁻⁹ and p is 10⁻¹².

Why do engineers use it?

Parts are labeled with SI prefixes, such as 4.7 kΩ or 100 nF, so an exponent that is a multiple of three reads straight off.