How do I use the single bet calculator?

Enter your odds in any format (American, decimal, fractional, or implied probability) and your bet amount. The calculator instantly converts all formats and shows your potential winnings and payout.

What is implied probability?

Implied probability is the conversión of betting odds into a percentage representing the likelihood of an outcome. For example, -110 American odds implies approximately 52.38% probability.

How do I convert American odds to decimal?

Positive American odds: (American odds / 100) + 1. Negative American odds: (100 / |American odds|) + 1. Or use this calculator to convert instantly.

Essentials

Single Bet Calculator

Pick one odds format, enter once, and see every other format convert instantly.

Quick start

Type odds in any one field
Enter stake amount
Read winnings and payout below

Try a quick example

$100 stake at -110 odds to see payout and win probability instantly.

odds format selector

Need help with odds formats? Learn this step

Enter American

Converted

Decimal

Fractional

Probability

Bet Amount

Range$0 – $1,000

Projected Results

Enter odds above to see your results.

How to read win probability? Learn this step

In plain English

Pick a side, enter your stake. The calculator shows exactly what happens if you win — profit, total return, and the implied win rate the book is pricing in.

How to Use the Single Bet Calculator

Three steps. Works with any odds format — moneyline, spread, or totals.

Enter the odds — Use any format — American, decimal, fractional, or implied. The others convert live.
Set your stake — Type the amount you plan to wager.
Read the payout — Winnings, total return, and implied win probability update as you type.

Odds convert between all formats automatically — use whichever your sportsbook displays.

Understanding Betting Odds Formats

Sportsbooks use four odds formats. Here is what each one means:

American Odds (Moneyline)

Shows how much you need to bet to win $100 (negative odds) or how much $100 wins (positive odds). Example: -150 means bet $150 to win $100; +150 means $100 wins $150.

Decimal Odds

Your total return for every $1 wagered, including your original stake. Example: 2.50 means a $100 bet returns $250 total ($150 profit).

Fractional Odds

Common in UK and European betting. Shows profit relative to stake. Example: 5/2 means a $2 bet wins $5 profit, returning $7 total.

Implied Probability

Expresses odds as a percentage likelihood of winning. Example: 52% implies you will win about half of comparable 52% probability bets over time.

Related tools and guides

Compare scenarios with the parlay tool, convert odds quickly, and dive deeper with practical guides.

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Essentials

What Does -110 Mean?

The beginner guide to reading American odds

Frequently Asked Questions

Winnings are profit only. Payout is the total return including your stake back. $100 at 2.0 decimal: winnings $100, payout $200.

Bet $100, win $150 in profit (payout $250). Positive American odds show the profit on a $100 wager — the bigger the number, the less the book expects it to win.

Positive: (American / 100) + 1. Negative: (100 / |American|) + 1. Or just type into any field — every format converts live.

The book’s implied break-even rate on the bet. A -110 line implies 52.38% — the rate you’d have to win at to come out even.