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This is a free math calculator, which is able to calculate the logarithm for a number to a base. You can also choose the base.
The best mathematical tool for school and college! If you are a student, it will helps you to learn algebra.
Note: The logarithm of a number is the exponent to which another fixed value, the base, must be raised to produce that number. For example, the logarithm of 1000 to base 10 is 3.