Scientific Notation Converter

Scientific notation makes very large or very small numbers easier to read and compare.

Scientific notation expresses a value as a coefficient between 1 and 10 multiplied by a power of ten, for example 1.2345 × 10⁴.

12,345 becomes 1.2345 × 10⁴ (1.2345e4); 0.0042 becomes 4.2 × 10⁻³.

1. Enter a plain number or one in E-notation.
2. Read the scientific, E-notation and decimal forms.

• Writing a coefficient outside the 1–10 range.

Convert a number into scientific notation and E-notation, or expand a number written in either form back to a plain decimal.