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Scientific Notation Converter

Convert between standard decimal numbers and scientific or engineering notation.

To convert scientific notation, enter a decimal number to express it as a coefficient times a power of ten, or enter a value like 4.2e-4 to expand it. The tool also shows engineering notation, where the exponent is always a multiple of three.

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Frequently asked questions

What is the difference between scientific and engineering notation?

Scientific notation uses exactly one digit before the decimal point, so 47,000 is 4.7 × 10⁴. Engineering notation restricts the exponent to multiples of three so it lines up with SI prefixes, giving 47 × 10³ — which reads directly as 47 kilo-.

Why does my calculator show E notation?

E is shorthand for "times ten to the power of", used because superscripts are hard to display. 1.5E-7 means 1.5 × 10⁻⁷. It is the same value, written for a device that cannot render exponents.

How to use the scientific notation converter

  1. 1Enter or paste your value.
  2. 2Choose the convert.
  3. 3Set the significant figures.
  4. 4The result appears immediately — copy or download it.

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