Beyond the basics of understanding the maths behind odds-making, and how to exploit a positive edge, there are tools that all sharp sports bettors should be aware of. Some of these essentials will help all bettors, be that a casual recreational punter or a more serious value-hunter.
- Need a quick way of converting odds from traditional fractional odds to decimal? Or from a US Money Line to decimal, and back again?
- Want to know the exact staking splits when "dutching" across several selections?
- Considering a Cashout scenario and need to check the maths?
- Have a betting history that you want to analyse for signs of skill? Use our instant p-value calculator?
- Check your optimal stake amount based on Kelly guidance and Sharp Stakes method?
- Working on a Back-and-Lay trading strategy on the exchanges or with the fixed-odds books?
- Need to quickly work out the payout of a double, treble or multiple-leg parlay?
The SharpBetting Toolbox provides ultra-simple step-by-step guidance to calculate all of the above in an instant.
The SharpBettor's Toolbox
Odds Conversion Lookup Table
Use the odds table below or try our converter tool here.
| Probability -- | Decimal Odds -- | American Odds -- | Fractional Odds |
| 1.0% | 101.00 | +10000 | 100 / 1 |
| 1.5% | 67.00 | +6600 | 66 / 1 |
| 2.0% | 51.00 | +5000 | 50 / 1 |
| 2.9% | 34.00 | +3300 | 33 / 1 |
| 3.8% | 26.00 | +2500 | 25 / 1 |
| 4.3% | 23.00 | +2200 | 22 / 1 |
| 4.8% | 21.00 | +2000 | 20 / 1 |
| 5.3% | 19.00 | +1800 | 18 / 1 |
| 5.9% | 17.00 | +1600 | 16 / 1 |
| 6.3% | 16.00 | +1500 | 15 / 1 |
| 6.7% | 15.00 | +1400 | 14 / 1 |
| 7.1% | 14.00 | +1300 | 13 / 1 |
| 7.7% | 13.00 | +1200 | 12 / 1 |
| 8.3% | 12.00 | +1100 | 11 / 1 |
| 9.1% | 11.00 | +1000 | 10 / 1 |
| 10.0% | 10.00 | +900 | 9 / 1 |
| 11.1% | 9.00 | +800 | 8 / 1 |
| 11.8% | 8.50 | +750 | 15 / 2 |
| 12.5% | 8.00 | +700 | 7 / 1 |
| 13.3% | 7.50 | +650 | 13 / 2 |
| 14.3% | 7.00 | +600 | 6 / 1 |
| 15.4% | 6.50 | +550 | 11 / 2 |
| 16.7% | 6.00 | +500 | 5 / 1 |
| 18.2% | 5.50 | +450 | 9 / 2 |
| 20.0% | 5.00 | +400 | 4 / 1 |
| 22.2% | 4.50 | +350 | 7 / 2 |
| 25.0% | 4.00 | +300 | 3 / 1 |
| 26.7% | 3.75 | +275 | 11 / 4 |
| 28.6% | 3.50 | +250 | 5 / 2 |
| 30.8% | 3.25 | +225 | 9 / 4 |
| 33.3% | 3.00 | +200 | 2 / 1 |
| 34.8% | 2.88 | +188 | 15 / 8 |
| 35.7% | 2.80 | +180 | 9 / 5 |
| 36.4% | 2.75 | +175 | 7 / 4 |
| 38.1% | 2.63 | +163 | 13 / 8 |
| 40.0% | 2.50 | +150 | 6 / 4 |
| 42.1% | 2.38 | +138 | 11 / 8 |
| 44.4% | 2.25 | +125 | 5 / 4 |
| 45.5% | 2.20 | +120 | 6 / 5 |
| 47.6% | 2.10 | +110 | 11 / 10 |
| 48.8% | 2.05 | +105 | 21 / 20 |
| 50.0% | 2.00 | +100 | 1 / 1 |
| 51.2% | 1.95 | -105 | 20 / 21 |
| 52.4% | 1.91 | -110 | 10 / 11 |
| 54.5% | 1.83 | -120 | 5 / 6 |
| 55.6% | 1.80 | -125 | 4 / 5 |
| 57.9% | 1.73 | -138 | 8 / 11 |
| 60.0% | 1.67 | -150 | 4 / 6 |
| 61.9% | 1.62 | -163 | 8 / 13 |
| 63.6% | 1.57 | -175 | 4 / 7 |
| 64.3% | 1.56 | -180 | 5 / 9 |
| 65.2% | 1.53 | -188 | 8 / 15 |
| 66.7% | 1.50 | -200 | 1 / 2 |
| 69.2% | 1.44 | -225 | 4 / 9 |
| 71.4% | 1.40 | -250 | 2 / 5 |
| 73.3% | 1.36 | -275 | 4 / 11 |
| 75.0% | 1.33 | -300 | 1 / 3 |
| 77.8% | 1.29 | -350 | 2 / 7 |
| 80.0% | 1.25 | -400 | 1 / 4 |
| 81.8% | 1.22 | -450 | 2 / 9 |
| 83.3% | 1.20 | -500 | 1 / 5 |
| 84.6% | 1.18 | -550 | 2 / 11 |
| 85.7% | 1.17 | -600 | 1 / 6 |
| 86.7% | 1.15 | -650 | 2 / 13 |
| 87.5% | 1.14 | -700 | 1 / 7 |
| 88.2% | 1.13 | -750 | 2 / 15 |
| 88.9% | 1.13 | -800 | 1 / 8 |
| 90.0% | 1.11 | -900 | 1 / 9 |
| 90.9% | 1.10 | -1000 | 1 / 10 |
| 91.7% | 1.09 | -1100 | 1 / 11 |
| 92.3% | 1.08 | -1200 | 1 / 12 |
| 92.9% | 1.08 | -1300 | 1 / 13 |
| 93.3% | 1.07 | -1400 | 1 / 14 |
| 93.8% | 1.07 | -1500 | 1 / 15 |
| 94.1% | 1.06 | -1600 | 1 / 16 |
| 94.7% | 1.06 | -1800 | 1 / 18 |
| 95.2% | 1.05 | -2000 | 1 / 20 |
| 95.7% | 1.05 | -2200 | 1 / 22 |
| 96.2% | 1.04 | -2500 | 1 / 25 |
| 97.1% | 1.03 | -3300 | 1 / 33 |
| 98.0% | 1.02 | -5000 | 1 / 50 |
| 98.5% | 1.02 | -6600 | 1 / 66 |
| 99.0% | 1.01 | -10000 | 1 / 100 |
____________________
You can sign up to our newsletter which provides free positive EV betting advice by visiting the SharpBetting.co.uk website.
Other reading
- Betting 101; the basics. Click here.
- What is the Sharp Stakes method? Click here.
- Sharp strategies for all levels. Click here.
- The Road To £8,000. Click here.
- Free tips via email? Click here.
____________________
Don't forget to join our 11,000 followers on X at @SharpBettingGB.
