Calculators
Scientific Notation Converter: Standard Form, E and Engineering Notation
Free, no sign-up, works in your browser. Convert a number to scientific notation, E notation and engineering notation, or turn 6.02 × 10^23 back into a plain decimal. Round to significant figures and see how many figures you typed.
Type a plain number or one in scientific notation (6.02e23, 6.02 × 10^23); every form updates.
- Scientific notation
- 4.56 × 10⁻⁵
- E notation
- 4.56e-5
- Engineering notation
- 45.6 × 10⁻⁶
- With an SI prefix
- 45.6 µ (micro)
- Decimal
- 0.0000456
What you typed has 5 significant figures.
Every digit is kept exactly; nothing is rounded unless you choose significant figures.
How to use the Scientific Notation Converter
- Type a number, like 0.000456, or one in scientific notation, like 6.02e23.
- Choose significant figures if you want to round.
- Copy the form you need.
Frequently asked questions
- What is scientific notation?
- A way to write very large or small numbers as a number between 1 and 10 times a power of ten: 45,600,000 is 4.56 × 10^7.
- What is E notation?
- The same thing written on one line, as calculators and spreadsheets do: 4.56e7 means 4.56 × 10^7.
- What is engineering notation?
- Like scientific notation, but the power of ten is always a multiple of 3, matching prefixes like kilo, mega and micro: 0.000456 is 456 × 10^-6.
- How are significant figures counted?
- All non-zero digits count, plus zeros between them and trailing zeros after a decimal point. Leading zeros don't count. Trailing zeros in a whole number like 1200 are ambiguous.
- Is the Scientific Notation Converter free?
- Yes. It's free to use, with no sign-up and nothing to install.
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