Scientific Notation Calculator
Convert any number to scientific notation.
What is a scientific notation calculator?
A scientific notation calculator writes a number as a mantissa times a power of 10. Example: 12345 = 1.2345 × 10^4.
How to use it
Enter a number, then tap Convert.
Formula
Move the decimal point until one non-zero digit is left of it; the number of places moved is the exponent. For 12345, moving the decimal point 4 places left gives 1.2345 × 10^4.
Example
Move the decimal point 4 places left, so 12345 becomes 1.2345. The exponent is 4, so 12345 = 1.2345 × 10^4.
Frequently Asked Questions
What is 12345 in scientific notation?
1.2345 × 10^4.
What is 0.0045 in scientific notation?
4.5 × 10^-3.
Why use scientific notation?
It makes very large and very small numbers easier to read and compare.
More calculators: Math Tools and All Tools.