The main format of odds featured at bookmakers (sportsbooks) online consist of the following:
1. Fractional
2. Decimal
3. American
For those of you with accounts at Asia-facing bookmakers, you will also be able to select from other odds formats such as Hong Kong (HK), Malaysian (Malay) and Indonesian (Indo).
To understand the differences between the main three formats prevalent at online bookies, please refer to the description and examples below.
And for a quick odds calculation reference, feel free to make use of the odds conversion chart at the bottom of this page.
（１）Fractional Odds
Predominantly used in the UK.
Example: 5/4 odds
If you place a $100 wager (stake) to win on 5/4 odds and win, you will receive $225 (wager + profit)
Calculation Breakdown:
Wager = $100
Profit = $125 (5/4 x $100)
（２）Decimal Odds
Predominantly used in Europe and other locations which are not the UK, USA and Southeast Asia.
Example: 2.25 odds
If you place a $100 wager (stake) to win on 2.25 odds and win, you will receive $225 (wager + profit)
Calculation Breakdown:
Wager = $100
Profit = $125 ((2.25-1) x $100)
（３）American Odds
Predominantly used in the US, American odds are shown as either positive (+) or negative (-).
Positive (+) Example: +125 odds
If you place a $100 wager (stake) to win on +125 odds and win, you will receive $225 (wager + profit)
Calculation Breakdown:
Wager = $100
Profit = $125 ($125 x 1)
Negative (-) Example: -200 odds
If you want to win $100 profit, you will need to place a $200 wager (stake). If you win, you will receive $300 (wager + profit)
Calculation Breakdown:
Wager = $200
Profit = $100
Odds Conversion Chart
| Fractional | Decimal | American | Fractional | Decimal | American | |
|---|---|---|---|---|---|---|
| 1/5 | 1.20 | -500 | 13/8 | 2.63 | +162.50 | |
| 2/9 | 1.22 | -450 | 17/10 | 2.70 | +170 | |
| 1/4 | 1.25 | -400 | 7/4 | 2.75 | +175 | |
| 2/7 | 1.28 | -350 | 9/5 | 2.80 | +180 | |
| 3/10 | 1.30 | -333.30 | 15/8 | 2.88 | +187.50 | |
| 1/3 | 1.33 | -300 | 19/10 | 2.90 | +190 | |
| 7/20 | 1.35 | -285.70 | 2/1 | 3.00 | +200 | |
| 4/11 | 1.36 | -275 | 21/10 | 3.10 | +210 | |
| 2/5 | 1.40 | -250 | 85/40 | 3.13 | +212.50 | |
| 4/9 | 1.44 | -225 | 11/5 | 3.20 | +220 | |
| 9/20 | 1.45 | -222.20 | 9/4 | 3.25 | +225 | |
| 40/85 | 1.47 | -212.50 | 23/10 | 3.30 | +230 | |
| 1/2 | 1.50 | -200 | 95/40 | 3.38 | +237.50 | |
| 8/15 | 1.53 | -187.50 | 12/5 | 3.40 | +240 | |
| 4/7 | 1.57 | -175 | 5/2 | 3.50 | +250 | |
| 3/5 | 1.60 | -166.70 | 13/5 | 3.60 | +260 | |
| 8/13 | 1.62 | -162.50 | 11/4 | 3.75 | +275 | |
| 5/8 | 1.63 | -160 | 14/5 | 3.80 | +280 | |
| 4/6 | 1.66 | -150 | 3/1 | 4.00 | +300 | |
| 7/10 | 1.70 | -142.90 | 16/5 | 4.20 | +320 | |
| 8/11 | 1.72 | -137.50 | 10/3 | 4.33 | +333.30 | |
| 4/5 | 1.80 | -125 | 7/2 | 4.50 | +350 | |
| 5/6 | 1.83 | -120 | 18/5 | 4.60 | +360 | |
| 9/10 | 1.90 | -111.10 | 4/1 | 5.00 | +400 | |
| 10/11 | 1.91 | -110 | 9/2 | 5.50 | +450 | |
| 20/21 | 1.95 | -105 | 5/1 | 6.00 | +500 | |
| Evens | 2.00 | -100 | 11/2 | 6.50 | +550 | |
| 21/20 | 2.05 | +105 | 6/1 | 7.00 | +600 | |
| 11/10 | 2.10 | +110 | 13/2 | 7.50 | +650 | |
| 6/5 | 2.20 | +120 | 7/1 | 8.00 | +700 | |
| 5/4 | 2.25 | +125 | 15/2 | 8.50 | +750 | |
| 13/10 | 2.30 | +130 | 8/1 | 9.00 | +800 | |
| 11/8 | 2.38 | +137.50 | 17/2 | 9.50 | +850 | |
| 7/5 | 2.40 | +140 | 9/1 | 10.00 | +900 | |
| 6/4 | 2.50 | +150 | 10/1 | 11.00 | +1000 | |
| 8/5 | 2.60 | +160 | 50/1 | 51.00 | +5000 |
