Build your roulette strategy on a visual table. Watch probability, expected value, and payout range update live as you place each chip. Know your edge before you sit down.
Start BuildingClick directly on the visual roulette mat. Straights, splits, corners, streets, dozens, columns. Every bet type a real table offers.
Hit rate, expected value, number coverage, payout range, and volatility all update in real-time. Sub-100ms. No waiting, no page reloads.
Found a configuration you like? Save it to your account or share it as a compressed URL. Your strategy, portable and persistent.
All calculations use integer cents. No floating-point drift, no rounding errors. The numbers you see are the numbers that matter. Supports both European and American wheel layouts.
James Bond, Martingale placement, column combinations, and more. Load a proven strategy instantly, then customize it to your style. Every template fully editable.
Probability of hitting, expected value per spin, number coverage, min and max payout, volatility classification. Every metric recalculates the moment you add or remove a chip. No submit button. No page refresh. Just the math, instantly.
Optimized mobile interface with button-based bet selection and number grid. Same live metrics, same precision. Plan your session from anywhere.
Every bet configuration compresses into a shareable link. Send your strategy to a friend, post it in a forum, or bookmark it for your next session.
SpinSheet doesn't promise you'll win. It promises you'll understand exactly what you're risking, what you could gain, and whether that trade-off is worth it to you.