Calculators for the gambling industry
The formulas behind the trade, worked out in your browser. Each tool shows the formula it uses and a worked example, so you can check the result by hand. Nothing you type leaves your device.
Odds converter
Decimal, fractional and American odds, and the probability they imply.
Bookmaker margin calculator
The overround of any market and its fair odds.
GGR and hold calculator
From amounts staked to gross and net gaming revenue.
House edge and theoretical win
RTP, house edge and what a game earns per hour.
Bonus cost calculator
What a wagering requirement costs the player, and the operator.
CPA vs revenue share
Compare affiliate deals over a player's lifetime.
Player LTV and payback
Lifetime value, acquisition cost and the payback month.
Market openness index
Every market we track scored from 0 to 100 for access by licensed operators.
Gambling tax rates by country
Headline GGR and stake taxes by market, with dates of change and sources.
Gambling licence costs
What regulators charge to apply for and keep an online gambling licence.
Licence checker
Is a gambling website licensed? Search the regulator's own register by address or brand.
Why these formulas matter
Most arguments in the industry come down to a few ratios: how much of the handle a sportsbook keeps, what a bonus really costs, when a revenue share deal overtakes a CPA, and how long it takes to earn back what a customer cost to acquire. Getting them right is the difference between a market that pays and one that only looks busy.
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