Arbitrage Calculator – Guarantee Profit in Sports Betting

Make smarter sports bets with our Arbitrage Calculator. Whether you're a beginner or a seasoned arber, this tool helps you calculate risk-free profits across multiple sportsbooks.

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Arbitrage Calculator

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American
Decimal
Fractional

Results

Total Implied Probability: -
Arbitrage Opportunity: -
Guaranteed Profit Margin: -
Outcome 1 Bet: -
Outcome 2 Bet: -
Guaranteed Profit: -
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What Is an Arbitrage Bet?

Arbitrage betting – often referred to as arb betting or sure betting – is the practice of placing bets on all outcomes of an event using different sportsbooks to guarantee a profit, no matter the result. This occurs when odds discrepancies make it mathematically possible to win regardless of the outcome.

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How the Arbitrage Calculator Works

Our betting arbitrage calculator helps you enter the odds and total stake, then calculates:

  • Stake per outcome
  • Profit per scenario
  • Total ROI

If the ROI is positive, it's a profitable arbitrage opportunity. If negative, the bet should be avoided.

✅ Works with American, Decimal, and Fractional odds

✅ Supports 2+ outcomes

✅ Instant results

How to Use the Arbitrage Calculator

  1. Enter odds (decimal, American, or fractional) for each bet.
  2. Input your total stake.
  3. The calculator will split your stake across the bets to ensure a guaranteed return.
  4. Adjust values to simulate different outcomes or odds changes.

You can add more than two bets if needed—ideal for multi-outcome arbitrage opportunities.

Arbitrage Betting Strategies

 

Strategy A: Classic Arbitrage

Bet equal returns on both outcomes.

Example:

  • Stake $58.14 on Knicks @ -125
  • Stake $41.86 on Celtics @ +150

No matter who wins, return = $104.65

Profit = $4.65 on $100 stake (4.65% ROI)

Strategy B: Weighted Arbitrage

Bet slightly more on the outcome you favor.

  • Celtics win = $11.10 profit
  • Knicks win = break even

Higher risk, higher potential reward.

 

Example

Let’s say:

  • Sportsbook A offers Team A at -125.
  • Sportsbook B offers Team B at +150.

Using our sports betting arbitrage calculator, you’d input both odds and your total stake. The calculator will determine the optimal stake on each side to ensure profit no matter which team wins.

Why GambleSpot Arbitrage Calculator?

Unlike generic betting tools, the GambleSpot Arbitrage Calculator is:

  • Fast and mobile-friendly
  • Supports American, Decimal, and Fractional odds
  • Built by sports betting experts
  • Includes advanced multi-bet arbitrage support

This tool is part of our complete betting tools suite—trusted by serious bettors across the US.

Questions You May Have

What is an Arbitrage Betting Calculator?

An arbitrage betting calculator is a tool that helps bettors stake amounts on different outcomes across sportsbooks to secure a guaranteed profit.

How to find arbitrage opportunities?

Monitor odds from multiple sportsbooks. When discrepancies arise, an arbitrage bet becomes possible. Odds comparison tools and alerts help detect these opportunities quickly.

How do I calculate arbitrage in betting?

Use our arbitrage calculator betting tool by entering the odds and total stake. It'll show how much to bet on each outcome for a guaranteed profit.

Can I use arbitrage betting on all sportsbooks?

No. Some sportsbooks restrict arbitrage behavior, and inconsistent odds formatting can affect accuracy. Always check terms and odds precision before placing bets.

Author
Author: Paul Daniel Flores
Updated: 3 hours ago
Author: Paul Daniel Flores
Writer l Sports and Esports Expert
Updated: 3 hours ago

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