How to use the scientific notation converter
- Type a number like 45000, 0.0032 or 4.5e-5.
- Optionally choose the number of significant figures.
- Copy the format you need.
How scientific notation works
A number is written as a × 10ⁿ, where a is between 1 and 10. Positive n means a large number, negative n a small one. E notation, used by calculators and spreadsheets, writes 10ⁿ as “en”: 4.5e-5.
Examples
4.5 × 10⁻⁵
2.99792458 × 10⁸