Coin flip

Client

Fair heads-or-tails with crypto-grade randomness. Need dice or numeric draws? Try dice roller or random integer.

About Coin flip

Flip a fair coin with crypto randomness—heads or tails history in your browser. 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.

Nearby workflows on Toolcore

  • Dice roller — Roll one or more dice with configurable sides—crypto random totals, local only. when units or numeric output should be checked on a related calculator.
  • Random integer generator — Uniform integers in a min–max range—optional unique draws, sort, Web Crypto; local only. when units or numeric output should be checked on a related calculator.
  • PIN code generator — Generate 4–8 digit numeric PINs with crypto randomness in your browser—copy locally. when units or numeric output should be checked on a related calculator.
  • Random line picker — Pick one random non-empty line from a list—raffles, samples, and spot checks in your browser. when units or numeric output should be checked on a related calculator.

Common use cases

  • Settle a quick tie-break without hunting for a physical coin.
  • Demo probability basics with a visible recent flip history.

Common mistakes to avoid

  • Expecting weighted odds

    Each flip is fair 50/50—there is no bias or streak correction.

FAQ

How random is each flip?

Outcomes use the Web Crypto API for uniform random bits in your browser.

Is data uploaded?

No. Flips stay on your device.

More tools

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