RTP Calculator is a free, no-frills tool that reveals the true value behind any sports bet. Enter the odds for each outcome and instantly get the Return To Player (RTP) — the percentage of stakes a bet theoretically returns to players.

WHAT IS THE RTP?

The Return To Player (RTP) is the share of money a betting market gives back to players. It's the flip side of the bookmaker's margin: the higher the RTP, the better your chances of finding interesting odds.

RTP Calculator does the math for you in an instant.

HOW IT WORKS

• Create a bet analysis and enter the odds for each possible outcome.

• Enter each odd in the format shown by your bookmaker — decimal (EU), fractional (UK) or American (US). Convert them in one tap to your preferred format if you like.

• The RTP is calculated instantly, with a color indicator (red to green) to gauge the level of the odds at a glance.

• Save, edit, duplicate or share your analyses anytime.

KEY FEATURES

• Instant RTP calculation for any sports bet.

• All odds formats supported: decimal (EU), fractional (UK) and American (US), with one-tap conversion.

• As many outcomes as you want — perfect for 1X2, correct score bets and complex markets.

• Duplicate an analysis in one tap to compare the same bet across several bookmakers and find the best return.

• Share your bet analyses as an image.

• Save and edit your full betting history.

• Completely redesigned: a fast, clean, dark interface built for bettors.

• 100% offline — your data stays on your device. No account, no sign-up.

WHO IS IT FOR?

• Sports bettors who want to assess the mathematical reality of their bets before placing them.

• Bettors who compare odds from different bookmakers on the same event.

• Anyone who wants to choose the bets they place more wisely — and, failing to win in the long run, at least lose less.

WHY USE RTP CALCULATOR?

A high RTP means bookmakers take a lower margin on the market — the closer the RTP gets to 100%, the better your chances of finding genuinely interesting odds (what's known in the jargon as a value bet).

Checking the RTP before placing a bet is therefore a fundamental discipline for any serious bettor, or anyone looking to protect their bankroll.

RTP Calculator is first and foremost a decision-support tool. It does not encourage gambling and makes no promise of winnings. Please bet responsibly and only if you are of legal age in your country.

Download RTP Calculator and start assessing the odds of your bets !