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Home › Math Tools › Log2 Calculator

Log2 Calculator

Compute the base-2 logarithm of any positive number.

math Math
log2(x)—
Bits needed—

How to Use

  1. Enter a positive number.
  2. Get log2(x) and the bits needed to represent it.
  3. Useful for information theory and binary math.

Use Cases

log2 is everywhere in CS — binary trees, information theory and algorithm analysis.

Nothing is uploaded — all processing happens locally in your browser.

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