Math

Scientific Notation Converter

Scientific notation converter supporting decimal-to-coefficient form and coefficient-times-ten-to-exponent conversion.

Scientific notation writes a nonzero number as a coefficient between 1 and 10 in absolute value multiplied by a power of ten. It is useful for very large or very small values.

JavaScript numbers have finite precision, so very long decimals or exponents outside the supported range may be rounded or overflow.

Frequently asked questions

What is normalized scientific notation?

The coefficient has an absolute value of at least 1 but less than 10, except for zero.

Can the exponent be negative?

Yes. Negative powers of ten represent values between −1 and 1.

Why might a long decimal be rounded?

Browser number arithmetic follows IEEE 754 double precision, which cannot preserve every decimal digit.