Coin flip probability
ClientFair coin binomial probability.
About Coin flip probability
Binomial P exactly k heads in n fair flips. 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.
P(5 heads) = 24.6094%
Nearby workflows on Toolcore
- Dice sum probability — P(sum = s) for two standard six-sided dice. when units or numeric output should be checked on a related calculator.
- Birthday paradox — Probability of shared birthday among n people. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
- Percentage calculator — Percent of a value, ratio to percent, and percent change—no server round-trip. when units or numeric output should be checked on a related calculator.
Common use cases
- Coin flip probability 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.
Dice sum probability
ClientP(sum = s) for two standard six-sided dice.
Birthday paradox
ClientProbability of shared birthday among n people.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Percentage calculator
ClientPercent of a value, ratio to percent, and percent change—no server round-trip.