Hold Percentage Calculator
Quick Facts
- Finds bookmaker margin for 2-way markets.
- Inputs: two prices in any odds format.
- Outputs: Hold % and Reverse Hold %.
How to use
Steps
Enter the two prices. Read Hold % to understand the margin; compare Reverse Hold % for balance.
Formula & definitions
Formula: Hold% = (1/odds₁ + 1/odds₂ − 1) × 100
- Hold
- Margin for a 2-way book.
- Reverse Hold
- Sum without subtracting 1; indicates balance.
Hold Calculator
What is Bookmaker Hold? (Sportsbook Margin Explained)
The Hold—also called the sportsbook's margin or overround—is the hidden percentage edge that bookmakers build into every market. This calculator helps you **find the true bookmaker margin** from any set of odds.
How to Use the Hold Calculator
- Enter odds for both sides (home/away, over/under, etc) in any format.
- Instantly see the Hold % (sportsbook’s profit margin on that market).
- Compare to Reverse Hold % to understand market balance.
- The lower the Hold, the better value for punters!
Why Margin Matters for Bettors
If you want to improve long-term results, compare bookmaker margins.
Markets with high holds (big margins) mean worse odds for you. Use this tool to spot the best-value markets across different sportsbooks and focus your betting where the margin is lowest!
Updated 03 Apr 2026 SAST
Why it matters
Use the Hold Percentage Calculator to sanity-check prices, remove guesswork, and make faster decisions when odds move.
Example
Example: Odds 1.95 vs 1.95. Hold is about 2.56%, reverse hold shows the fair equivalent.
Who it's for
Best for two-way sports betting markets and head-to-head matchups.
Use cases
- Check hold % across sports betting sites for the same matchup.
- Assess market competitiveness before placing sporting bets.
Practical tips
- Verify the odds are still live before relying on the output.
- Treat the results as guidance, not a guarantee.
- Compare multiple sportsbooks to validate value.
FAQs
What is Hold %?
The bookmaker margin on a two-outcome market.
Is lower Hold better?
Yes—lower margins usually offer better value.
Does format matter?
No—tool converts formats seamlessly.
Where is Hold most useful?
Head-to-head lines and 2-way sports betting markets.