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.
Log Base 2 Calculator
Verified formula Updated Jun 2026 Private — runs on your device
Verified formula
Private
Log base 2
3.000000
For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.
How to use the Log Base 2 Calculator
The Log Base 2 Calculator works out your log base 2 in an instant. Enter number and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.
- Enter the number.
- Read off your log base 2 — the calculator updates automatically, with no button to press.
Worked example
For example, with number of 8, the log base 2 is 3.000000.
| Number | 8 |
|---|
| Log base 2 | 3.000000 |
|---|
Results are estimates for educational use, not professional advice.
Frequently asked questions
It is the power 2 must be raised to for a number. Log base 2 of 8 is 3, since 2³ is 8.
Divide the natural log of the number by the natural log of 2.
Computer science uses it for bits, data sizes and algorithm complexity, since data doubles in powers of 2.
Only positive numbers. The logarithm is not defined for zero or negative values.
Enter the number. Read off your log base 2 — the calculator updates automatically, with no button to press.
Related guides
How to Calculate Log Base 2: Formula, Steps & Examples
Learn how to calculate Log Base 2 — the formula explained step by step, with worked examples and a free calculator to check your answer.