Games & Hobbies Tools
Score keepers, practice aids, and reference tools for game night and hobby time — skip the lookup tables and keep playing.
Darts Checkout Calculator
Enter your remaining score and get the standard 501 checkout route.
Riichi Mahjong Score Calculator
Han, fu, dealer or not — get the exact payout without the score table.
Guitar Metronome
Online metronome with real volume control, tap tempo, and a speed trainer.
Capo Calculator
Where to clamp your capo to play any key with easier open-chord shapes.
Tap Tempo — BPM Tapper
Tap along to any song to measure its tempo in BPM instantly.
Yahtzee Score Calculator
Fill in a scorecard and get the running total, upper bonus, and all.
Every tool runs in your browser — nothing you enter is uploaded, stored, or shared. Missing a calculator you need? Tell us and we may build it.