The order of magnitude is a way to approximate a number to the nearest power of 10. It's a useful for making quick comparisons and estimations of very large or very small numbers.

For example:

• The number 800 is closer to 1000 (10³) than 100 (10²). Its order of magnitude is 10³.
• The number 0.04 is closer to 0.01 (10^-2) than 0.1 (10^-1). Its order of magnitude is 10^-2.

This calculator finds the integer power of 10 that is closest to your number.

Disclaimer: This calculator is for educational purposes only. Please verify all results for critical applications.