Population count (bits)

Client

Population count tallies 1-bits—13 in binary is 1101 → three ones.

About Population count (bits)

Count set bits in a non-negative integer—Hamming weight. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

3 set bits

Nearby workflows on Toolcore

  • Hamming distance — Count differing positions between two equal-length strings—Hamming distance calculator in your browser. when the payload needs a different encoding or escape format.
  • Reverse bits (8-bit) — Reverse bit order of an 8-bit value—low-level bit trick. when the payload needs a different encoding or escape format.
  • CRC-8 checksum — CRC-8 with polynomial 0x07 on UTF-8 bytes—local digest byte. when the payload needs a different encoding or escape format.
  • Integer base converter — Whole numbers in radices 2–36: binary, octal, decimal, hex (optional 0x), custom bases; BigInt-sized strings, local only. when the payload needs a different encoding or escape format.

Common use cases

  • Population count (bits) for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.