What's the difference between scientific and engineering notation?

Engineering notation restricts the exponent to multiples of three, matching common unit prefixes.

Can I control precision?

Yes, set the significant figures field to round the result as needed.

Can I paste scientific notation as input?

Yes, values like 1.23e5 are parsed correctly.

Scientific Notation Converter

Convert between decimal, scientific, and engineering notation.

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Scientific Notation Converter

Enter a decimal or scientific number (e.g. 1.23e5)

Number

Accepts plain decimals or scientific notation

Significant figures

Result

Converted representations

Decimal (rounded to sig figs)

0.0001235

Scientific notation

1.235e-4

Engineering notation

123.5e-6

Full precision decimal

0.00012345

About the Scientific Notation Converter

Convert any number between plain decimal, scientific notation, and engineering notation with adjustable significant figures.

Examples

0.00012345

0.00012345

Output

1.235e-4

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Frequently asked questions

Version 1.0.0 · Updated 2026-08-06 · Runs entirely in your browser