Scientific Notation Converter
Scientific notation converter: write any number as a × 10ⁿ, in E notation and in engineering notation.
0.000123 = 1.23 × 10−4
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
In scientific notation the mantissa is between 1 and 10: 0.000123 = 1.23 × 10⁻⁴.
Engineering notation uses exponents that are multiples of 3, matching SI prefixes (k, M, µ…).
Frequently asked questions
What is 4,500,000 in scientific notation?
4.5 × 10⁶.