Try it yourself:
| @1 |
LOG10E
|
|
| @2 |
log(e, 10)
|
LOG10E is log₁₀(e), the conversion factor from natural logs to base-10 logs.
Multiply log() results by LOG10E to obtain base-10 values, or call log10() directly. LN10 is the reciprocal conversion factor.
Real logarithms need positive inputs; retain exact constants until formatting with format().
Enter LOG10E on a calculator line to see its built-in value, or place the name inside a longer expression. Keep any displayed unit attached when converting or combining physical quantities, and check that every other value uses a compatible dimension.
The example above is editable, so you can replace surrounding values and test the constant in your own formula. Browse all constants to compare related values and notation.