Scientific Notation Converter
Convert numbers to and from scientific notation.
Taming very large and very small numbers
Scientific notation writes a number as a value between one and ten multiplied by a power of ten, which makes very large or very small numbers manageable. This converts between an ordinary number and scientific notation in both directions.
Enter a number in either form to convert it.
Why science can't do without it
Scientific notation exists because some numbers are absurd to write out in full — the distance to a star, the size of an atom, the number of molecules in a sample — and a long string of zeros is both unreadable and error-prone. Expressing the magnitude as a power of ten captures the scale compactly, and the exponent alone tells you roughly how big or small something is at a glance. It also makes multiplying and dividing such numbers far easier, since you add or subtract the exponents. Beyond science, it is how calculators and computers display numbers too big or small to fit, so recognising and converting it is a broadly useful skill.
Frequently asked questions
What is scientific notation?
Writing a number as a value between one and ten times a power of ten, so very large or small numbers become compact and readable.
Why is it used in science?
Because writing huge or tiny numbers in full is unreadable and error-prone, and the power of ten captures the scale at a glance while easing calculation.
Is anything uploaded?
No. The conversion happens in your browser.