Scientific Notation Converter

Convert any number to and from scientific and engineering notation, with the coefficient, exponent, and standard form. Calculates in your browser.

Enter a plain number (12345), a decimal (0.0012), or scientific notation (1.5e-4).

Scientific notation

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Engineering notation-
Coefficient (mantissa)-
Exponent (power of 10)-
Standard form-

Show the math

Scientific notation writes a number as a coefficient between 1 and 10 times a power of ten:

n = c × 10ⁿ  (1 ≤ |c| < 10)

Engineering notation keeps the exponent a multiple of 3 so it maps onto SI prefixes (kilo, milli, micro…). All math runs in your browser.

What this does

A scientific notation converter changes any number to and from scientific and engineering notation, with the coefficient, exponent, and standard form.

How to use it

  1. Enter a number or a notation.
  2. Read the scientific form.
  3. Read the engineering form.
  4. See the coefficient and exponent.

How it works

Scientific notation uses a coefficient between 1 and 10 times a power of ten. Engineering notation keeps the exponent a multiple of 3 to line up with SI prefixes.

a × 10ⁿ, with 1 ≤ |a| < 10

Example

12,345 is 1.2345 × 10⁴ in scientific notation.

Sources & methodology

Last updated .

Frequently asked questions

What is scientific notation?

It writes a number as a coefficient between 1 and 10 times a power of ten, e.g. 12345 = 1.2345 × 10⁴.

How is engineering notation different?

Engineering notation keeps the exponent a multiple of 3, so it lines up with SI prefixes like kilo, milli, and micro.

Is my data stored?

No. Everything is calculated locally in your browser.