Number to scientific notation
n = a × 10^e, where 1 ≤ |a| < 10
Scientific Notation Converter — number and a × 10^n
Convert regular numbers to scientific notation and convert coefficient plus exponent back to a regular number. Includes formulas, steps, and FAQ.
Scientific Notation Converter
Convert regular numbers to a × 10^n notation and back.
Number to scientific notation
Enter valid numbers
Scientific notation to number
Enter valid numbers
Scientific notation makes very large or tiny numbers easier to read
Scientific notation writes a number as a × 10^n. The coefficient a is usually scaled so its absolute value is at least 1 and less than 10, while n records how far the decimal point moved. This tool converts both directions instantly.
Formulas
Exponent
e = floor(log10(|n|))
Scientific notation to number
number = a × 10^e
How to use
- Enter a regular number to see its a × 10^n form.
- Enter a coefficient a and exponent n to convert back to a regular number.
- Use it for large values, small measurements, and science class examples.
Frequently asked questions
How is 12345 written in scientific notation?
12345 = 1.2345 × 10^4.
How does 0.00056 convert?
0.00056 = 5.6 × 10^-4.
Does a have to be between 1 and 10?
In normalized scientific notation, a nonzero number is written so that 1 ≤ |a| < 10.
This tool is for general arithmetic. For official figures, confirm with the relevant authority.