Logarithm Tables

A logarithm table lists the logarithm of a range of numbers for a given base, once the standard reference for calculations before calculators made them commonplace — and still useful today for quick lookups or teaching how logarithms behave. Pick a base below to see its table online, print any block of it, or save a page as a PDF straight from your browser's print dialog. Any base from 2 to 10,000 has its own page — just change the number in the URL, e.g. /table/logarithm/7.