Odds Calculator - Arbitrage, Hedge, Kelly, Value, Parlay, Dutching

This odds calculator brings the most used betting tools into one place: arbitrage, hedging, Kelly staking, value checks, parlay odds, and dutching. It is designed for quick decisions when you are comparing prices and planning stakes.

You can paste odds in common formats like decimal, American (+/-), or fractional and the tools will normalize them automatically. Each tab focuses on one job, so you get the numbers that matter without extra steps: implied probability, break even point, equal profit stakes, and clean stake splits.

If you are working from a messy slip or a copied line, paste it as is and the calculator will pull out usable odds. Results are rounded for readability, so small differences after rounding are normal when you place stakes.

Odds calculator FAQ

Which odds formats are supported?
Decimal (1.91), American (+110 / -110), and fractional (10/11) are supported. Decimal commas like 1,91 are supported too.

Why do my stake splits sometimes look slightly off?
Stakes are rounded to keep them placeable. When rounding happens, you may see a tiny difference in totals or profit. The tool will note it when it matters.

Does commission get included?
Commission is optional on Lay, Free bet, and Hedge. Other tools assume zero commission unless they offer a commission field.

More guides:
Staking beyond flat - Kelly portfolio thinking
From random stakes to system building - a personal staking routine