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Scientific Notation Calculator
Convert numbers to and from scientific notation, E-notation and engineering notation.
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How to use this calculator
Enter your values. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.
How it works
Scientific notation writes a number as a × 10ⁿ with 1 ≤ |a| < 10. Move the decimal point until one non-zero digit is left of it; the number of places moved is n (positive for big numbers, negative for small ones).
- 602,214,076,000,000,000,000,000 = 6.02214076 × 10²³
- 0.00042 = 4.2 × 10⁻⁴
Engineering notation uses exponents that are multiples of 3, matching SI prefixes (kilo, mega, milli, micro).
Frequently asked questions
What is 0.0005 in scientific notation?
5 × 10⁻⁴.
About this tool
- Written by
- [Author: to be assigned]
- Reviewed by
- Formula tests passed · human review pending
- Last updated
- 31 Oct 2026
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