Scientific Notation Converter

Scientific notation writes a number as a coefficient between 1 and 10 multiplied by a power of ten, such as 1.2345 x 10^4 for 12,345. It keeps very large and very small numbers short and easy to compare. It is also called standard form.

E notation is the plain-text version used by calculators and code, where the letter e stands for 'times ten to the power of'. So 1.2345 x 10^4 is written 1.2345e+4, and 1.2 x 10^-3 is written 1.2e-3. The math is identical; only the formatting changes.

In normalized scientific notation the coefficient, also called the mantissa, is at least 1 and less than 10, so it always has a single nonzero digit before the decimal point. This converter normalizes your input to that range automatically.

Large numbers get a positive exponent and small numbers (less than 1) get a negative exponent. For example 6,000,000 becomes 6 x 10^6 and 0.00004 becomes 4 x 10^-5. Results carry up to 15 significant digits, the precision a standard number can represent.

Yes. The sign stays on the coefficient, so -45,000 becomes -4.5 x 10^4. Zero is a special case with no normalized form, so it is shown as 0 x 10^0.

Yes. The conversion runs entirely in your browser and nothing you type is uploaded or stored.