Scientific Notation Converter
Convert a number to scientific and engineering notation, or turn scientific notation back into a plain decimal.
Input
Accepts plain decimals and forms like
1.23e5, 1.23 × 10^5 or 1.23x10^5. A comma is treated as a decimal separator in 1,5 and as a thousands separator in 1,234.
Result
Enter a number to convert.
Definitions
Scientific notation writes a number as m × 10^e where the mantissa m is between 1 and 10. Engineering notation is the same, but the exponent is always a multiple of 3, which pairs naturally with SI prefixes such as kilo (10³) and micro (10⁻⁶).