Scientific Notation Calculator
Last updated: October 15, 2026
Convert a number to scientific notation, E notation, coefficient and exponent.
Scientific notation
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- E notation: —
- Coefficient: —
- Exponent: —
On this page
Quick summary: Convert a number to scientific notation, E notation, coefficient and exponent.
Read the method, example and limitations
Updated reference sections in this guide are in English.
Guide language: English. Updated October 15, 2026.
What this calculator estimates
Convert a number to scientific notation, E notation, coefficient and exponent.
Inputs and units
Enter Number, Significant figures. Use the units shown. Required fields cannot be blank. Use zero only where that field and the model allow it. Select Calculate after changing the values.
Method and assumptions
Round the entered number to the requested 1 to 15 significant figures, then display its coefficient and power of ten. The exponent is adjusted when rounding carries the coefficient into a new order of magnitude.
Worked example
9.999 to three significant figures becomes 1.00 x 10¹, rather than an unnormalized 10 x 10⁰. Zero can display trailing zeros showing the requested precision.
Limitations
The input is parsed as a finite floating-point number. Trailing zeros in the original input are not used to infer measurement precision; choose the requested significant figures explicitly.