Spin a decision wheel for any choice
Add options, click Spin, and let the wheel decide. Each slice gets equal weight and a fresh colour — perfect for tiebreakers.
How to spin a decision
Each option gets an equal slice and a unique colour. The wheel spins for three seconds; the result is decided up front so the visual is honest.
- 01
Add options
Type, press Enter, repeat. Two minimum.
Inputs are treated as UTF-8 throughout the pipeline and validated client-side as you type — nothing dispatches until the value is well-formed.
addinpututf-8client-sidevalidatedadd · textPizza · set+ Pizza
loaded · parsedclient-side - 02
Spin the wheel
One click runs the spin animation.
Each toggle re-computes through a memoised hook, so flipping options never resets your input and the UI stays snappy on large inputs.
spinoptionslivememoisedtogglesspin · memoisedgo · liveSpinning…
options set · memoisedlive - 03
Read the winner
The arrow at the top points at the chosen slice.
Randomness — where used — comes from
crypto.getRandomValues, neverMath.random. Heavy work sits inuseMemo.winnercomputeinstantlocaldeterministicout · instantPizza · computedPizza
computed · instantinstant - 04
Spin again
Re-spin as often as you like — every run is independent.
Copy writes through
navigator.clipboardand downloads use aBlob— zero network traffic. Same input plus same options always yield the same bytes.repeatcopydownloadzero-networkreproducibleok · copiedready · copiedRe-spin
shipped · ready to shipsuccess
Pro tips for everyday utilities
Reach for crypto.getRandomValues
Cryptographically random for IDs, tokens, salts. Math.random is for animation and games, not security.
Mock data with seeds
Faker-style libraries can be seeded so tests are reproducible. Embed the seed in the fixture file.
Reference cards beat memory
Cheatsheets for Vim, Git, Docker, Linux signals are faster than man pages when you’re mid-flow.
Browser APIs vary
Touch events, gamepads, and clipboard differ across vendors. Feature-detect before use.
Persist in the right place
localStorage for user preferences, sessionStorage for transient state, IndexedDB for structured data.
When to spin the wheel
Group decisions, classroom games, sprint rotation.
Lunch debates
Settle Pizza vs. Tacos without another office vote. Random values come from crypto.getRandomValues — cryptographically secure for tokens, salts, and session IDs. Math.random is deterministic enough for animations but predictable enough to be a security bug.
CSPRNG-backedClassroom games
Pick the next student to read out loud. Pair with hashids, ULID, or UUID v7 when you need both random and sortable — useful for primary keys, public-facing IDs, and event log ordering without a sequence column.
reproducibleSprint rotation
Decide who runs the next demo. Output is deterministic given the same seed, so fixtures and tests stay reproducible across CI runs and contributor machines. Embed the seed in the fixture file for full replay.
snappyBug bash assignments
Spin to assign a random reviewer. Heavy work runs through useMemo so the UI stays snappy on large inputs. Same input + same options yields identical bytes — the kind of stability snapshot tests rely on.
feature-detectedStream giveaways
Pick a winner from the chat names. Storage tools persist to the right backend: localStorage for user preferences, sessionStorage for transient state, IndexedDB for structured data. Pick the right shelf and quota worries disappear.
deterministicGame nights
Choose the next board game with a flourish. Browser feature detection: clipboard, fullscreen, gamepad, and Web Bluetooth APIs gracefully fall back when unavailable. No surprise white screens on Safari or older Firefox.
production-readyFrequently asked questions
Something missing?
Tell us what you need. We ship the top requests every two weeks.