Log Formula: log₁₀x is a number n such that 10ⁿ = x

Log Definition Our free online Log Calculator is an easy to use math calculator that makes it easy to calculate the log base 10 of any number you enter in. Simply enter in the number that you want to convert to log base 10 and press calculate. Try it out and then use our other free calculators today!

How to Calculate Log Let's be honest - sometimes the best log calculator is the one that is easy to use and doesn't require us to even know what the log formula is in the first place! But if you want to know the exact formula for calculating log then please check out the "Formula" box above.