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.

Is my data uploaded to a server?

No. This tool runs entirely in your browser using standard web APIs, so your input never leaves your device and nothing is logged or stored on our servers.

Does it work offline and on mobile?

Yes. Once the page has loaded it keeps working without a network connection, and the layout is responsive so it stays usable on phones and tablets.

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)

NumberAccepts 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

Keyboard shortcuts

Copy the main outputCtrl / ⌘ + Shift + C
Download the resultCtrl / ⌘ + S
Share this toolCtrl / ⌘ + Shift + S
Reset the inputsAlt + R
Open the tool search paletteCtrl / ⌘ + K

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Frequently asked questions

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