Scientific notation calculator

Write a decimal as a coefficient from 1 up to 10 times a power of ten, without losing its numeric value.

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Scientific notation calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Write a decimal as a coefficient from 1 up to 10 times a power of ten, without losing its numeric value.

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Precision and calculation record

Decimal places in numeric results and text downloads

Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.

Saved scenario

Save the current answer, then change an input to compare. This clears when you leave.

Formula and assumptions

Trailing coefficient zeros are omitted, so this expresses value rather than measurement precision. Exact decimal parsing supports bounded e notation. Zero is shown as 0 × 10^0.

Whole-number and finite-decimal arithmetic is exact within the stated input limits. Any requested rounding uses the selected setting. Thousands separators such as 1,000 are accepted; use a dot for decimals.

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Updated 2026-09-20

Using Scientific notation calculator

Write a decimal as a coefficient from 1 up to 10 times a power of ten, without losing its numeric value.

Trailing coefficient zeros are omitted, so this expresses value rather than measurement precision. Exact decimal parsing supports bounded e notation. Zero is shown as 0 × 10^0.

Next: Significant figures calculator

Next: Rounding calculator

A worked example

Example inputs: number = 12345. Scientific notation = 1.2345 × 10^4.

Before you use the result

Trailing coefficient zeros are omitted, so this expresses value rather than measurement precision. Exact decimal parsing supports bounded e notation. Zero is shown as 0 × 10^0. Whole-number and finite-decimal arithmetic is exact within the stated input limits. Any requested rounding uses the selected setting.

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