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Reference table

Log Base 2 Table: Log base 2 by Number

Reference table of log base 2 for Log Base 2 across a range of number values — exact, engine-computed figures you can read off at a glance.

By Vikram Iyer, M.Sc Mathematics · Updated Jun 2026 · 1 min read

This log base 2 reference table shows the log base 2 for a range of number values. Every figure is computed with the same engine that powers our Log Base 2 Calculator, so the numbers are exact.

NumberLog base 2
21.000000
42.000000
62.584963
83.000000
123.584963
164.000000
244.584963
405.321928
565.807355
806.321928

How to use this table

Find the row closest to your number and read across to the log base 2. For a value between two rows, the real figure sits between them — or enter your exact numbers in the Log Base 2 Calculator for a precise answer.

Need a value that is not in the table? — the Log Base 2 Calculator does it instantly, for free, with the formula and a worked example built in.

Continue exploring math calculators with these tools: Margin of Error Calculator, Sample Size Calculator, Confidence Interval Calculator, Coefficient of Variation Calculator, Regular Heptagon Area Calculator.

Calculators in this guide

Frequently asked questions

Each cell is computed with the standard formula using exact arithmetic — the same calculation behind our Log Base 2 Calculator — so every figure is accurate for the stated assumptions.

Yes. The table covers common number values; for any exact figure, enter your own numbers in the Log Base 2 Calculator.

Vikram Iyer · M.Sc Mathematics

Vikram Iyer is a mathematics educator with over fifteen years of teaching experience, specialising in making quantitative concepts clear and practical for everyday use.