Alex MacQuoid A price is a price, but nobody reads all four the same way. Your sportsbook shows +450, the tipster you follow quotes 11/2, the exchange lists 6.50 — three notations, one bet. Converting them onto the same scale takes the guesswork out of comparing prices, and it takes about a second.
Odds converter
Every format has a pivot point, and it is worth knowing yours by heart: 2.00 decimal, 1/1 fractional, +100 American, 1.00 Hong Kong. All four describe a coin flip. Below that line you are backing a favorite and the market expects your selection to win more often than not; above it you are on an underdog. Once you can place a price against that marker instantly, a good or bad line stops hiding behind unfamiliar notation.
The Four Formats Explained
Decimal (1.50, 2.00, 6.00)
The default across UK and European exchanges. The number is your total payout per $1 staked, stake included. $10 at 6.00 returns $60 — $50 profit plus your $10 back. It's the easiest format to multiply across a multiple, which is why the free bet calculator works in decimal internally regardless of which format you entered.
Fractional (5/1, 1/2, 1/10)
The traditional UK high-street format, and still standard in horse racing. The fraction is profit relative to stake — 5/1 wins $5 for every $1 staked, on top of the stake back. Below evens the fraction inverts: 1/2 means staking $2 to win $1. Fractional reads intuitively on a single bet but gets clumsy fast once you're multiplying prices together.
American / Moneyline (+500, −200)
Standard on US sportsbooks. A positive number shows the profit on a $100 stake — +500 wins $500 on $100. A negative number shows the stake needed to win $100 — −200 means staking $200 to win $100. The sign alone tells you whether the price is odds-against (+) or odds-on (−), without reading the rest of the number.
Hong Kong (2.00, 0.50, 0.10)
Common across Asian bookmakers and betting exchanges. It reads like decimal odds with the stake stripped out — the number is pure profit per $1 staked. Hong Kong 5.00 and decimal 6.00 describe the exact same price; only whether the stake is included in the figure changes.
Converting Between Formats Manually
| Decimal | Fractional | American | Hong Kong |
|---|---|---|---|
| 1.10 | 1/10 | −1000 | 0.10 |
| 1.50 | 1/2 | −200 | 0.50 |
| 2.00 | 1/1 (evens) | +100 | 1.00 |
| 3.00 | 2/1 | +200 | 2.00 |
| 4.00 | 3/1 | +300 | 3.00 |
| 6.00 | 5/1 | +500 | 5.00 |
The formulas behind the table:
- Fractional to decimal: (numerator ÷ denominator) + 1
- Decimal to American: at 2.00 or above, (decimal − 1) × 100. Below 2.00, −100 ÷ (decimal − 1)
- American to decimal: positive figures, (American ÷ 100) + 1. Negative figures, (100 ÷ American) + 1, ignoring the minus sign
- Decimal to Hong Kong: decimal − 1
- Hong Kong to decimal: Hong Kong + 1
What the Price Implies: Reading Probability Off Any Format
Every odds format is a repackaging of the same implied probability. Convert to decimal first, then divide 1 by the decimal price: 1 ÷ 6.00 = 16.7%. That's the chance the market is pricing in, stripped of the notation it's dressed up in.
This is the actual reason to convert in the first place. Two bookmakers quoting 11/2 and 6.00 on the same horse look different at a glance — convert both to decimal (6.50 against 6.00) and the gap is obvious: 15.4% implied against 16.7%. The lower number is the better price for you, because you're being paid for a chance the market rates as less likely. That difference, taken across enough bets, is the entire game.
Convert, compare, then calculate. Line shopping only works if every price you're weighing sits on the same scale first, and Tips.gg pulls the wider market together so you can see where the best number actually is.
Odds Converter FAQs
What is an odds converter?
A tool that translates a betting price between decimal, fractional, American and Hong Kong formats, so you can read any bookmaker's odds in the notation you're used to without doing the arithmetic by hand.
Is 2.00 the same as evens?
Yes. Decimal 2.00, fractional 1/1, American +100 and Hong Kong 1.00 all describe the same 50% implied probability. It's the pivot point between odds-on and odds-against in every format.
How do I convert American odds to decimal?
For a positive figure, divide by 100 and add 1 — +500 becomes 6.00. For a negative figure, divide 100 by the figure (ignoring the minus sign) and add 1 — −200 becomes 1.50.
What are Hong Kong odds?
Decimal odds with the stake removed from the number. Hong Kong 5.00 pays the same as decimal 6.00 — both return $5 profit per $1 staked. Hong Kong just doesn't add the stake back into the figure shown.
Why do two bookmakers show different-looking prices for the same bet?
Usually they don't — they're quoting in different formats, or one has priced in a slightly different margin. Converting both to decimal puts them on the same scale so you can see whether the gap is real value or just notation.
Does this tool calculate my winnings?
No — it only converts the price format. For the return on a stake, use the bet calculator, which gives you total return and net profit from any price you enter.
Please gamble responsibly. Set a budget, never chase losses, and only stake what you can afford to lose. Free support is available through your national problem gambling helpline.