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Scientific Notation Converter
Convert numbers between standard form and scientific notation
About this calculator
Scientific notation expresses numbers as a × 10ⁿ, where 1 ≤ a < 10. It makes very large or very small numbers manageable. The speed of light is 3 × 10⁸ m/s instead of 300,000,000 m/s. A hydrogen atom is about 5.3 × 10⁻¹¹ m across. Used universally in science and engineering.
How to use
Enter 0.000045 — this equals 4.5 × 10⁻⁵. Enter 6500000 — this equals 6.5 × 10⁶. The exponent tells you how many places to move the decimal point.
Frequently asked questions
How do I multiply numbers in scientific notation?
Multiply the coefficients and add the exponents. (3 × 10⁴) × (2 × 10³) = 6 × 10⁷.
What is E notation on calculators?
E notation is a shorthand for scientific notation. 4.5E−5 means 4.5 × 10⁻⁵. It is the same thing written differently, used by calculators and computers.