The Complete Guide To Decimal Odds

Decimal odds are commonly found on betting exchanges such as Betfair and they provide a simple way for bettors to calculate their betting returns. Although the majority of bookmakers & betting websites will offer their users the opportunity to use decimal odds as their default option, the majority of online UK betting sites will automatically use fractional odds on the majority of their sports betting markets.

They offer a far simpler way of calculating your returns and your stake will always be included in your returns.

Examples of Decimal Odds – 1.63, 2.02, 2.50, 3.10

In decimal odds – 2.00 represents even money and anything priced at 1.99 or lower represents an odds-on bet.

Top 5 Betting Sites In The UK

#
Betting Site
Bonus
Bet Now
1
Betfred casino_120x120
BetFred
4.8
Bet £10 Get£40 in Bonuses when you sign up using WELCOME40
uk
UK Licensed
Competitive Odds

New UK 18+ only. Register with promo code WELCOME40, Bet £10+ on Sports in one transaction. Get £30 Free Bets & £10 free spins within 10hrs of bet settlement. Bonuses expire 7 days after issue. Min odds, eligibility & payment exclusions apply. Full T&Cs apply.

2
10BetCasino_120x120
10bet
4.8
50% up to £50
uk
UK Licensed
Competitive Odds

New bettors; Code PLAY10; Wager deposit & bonus 8x; Max qualifying bet stake=initial bonus; Valid 60 days; Min odds, bet and payment method exclusions apply; T&C apply; 18+

3
888Sport_120x120_transparent
Hot
888sport
4.8
Bet £10 & Get £30 + £10 Casino Bonus
uk
UK Licensed
Competitive Odds
New costumer only. 🔞. BeGambleAware - https://www.begambleaware.org/ .T&Cs: Minimum deposit of £10 using deposit code 30F - A qualifying bet is a ‘real money’ stake of at least £10 placed on any sports market - Minimum odds of 1/2 (1.5) - Free bets credited upon qualifying bet settlement and expire after 7 days - Free bet stakes not included in returns - Casino Bonus must be claimed within 7 days • To withdraw bonus/related wins, wager bonus amount x40 within 14 days • Wagering req. vary by game • Withdrawal restrictions and Full T&C’s apply: read here https://www.888sport.com/spt/betget-offer.htm#fullTerms
4
Coral_120x120
Coral
4.7
Bet £5 & Get £20
uk
UK Licensed
Competitive Odds
18+ Eligible UK+IRE players. Paypal & some deposit & bet types excl. Min first £5 bet within 14 days of account reg at min odds 1/2 = 4x £5 free bets. Free bets valid for 7 days, stake not returned. No cashout, restrictions + T&Cs apply
5
bwin_120X120
Bwin
4.5
Get £20 Back-Up Bet
uk
UK Licensed
Competitive Odds
T&Cs: Min deposit £10, Max stake £10, Min Odds 1/1 (2.0). Max free bet £10; New players only; +18; T&Cs. If a player loses their first bet (on minimum odds of 2.0), we will offer a matching free bet (of up to £10). Neteller and Skrill excluded.
6
Betzone_120x120
Betzone
4.5
Up To £60 In Free Sports Bets + Free Casino Spins
uk
UK Licensed
Competitive Odds

To welcome all new Betzone customers we are offering three welcome bonuses of up to £60 in free sports bets together with free casino spins and the opportunity to join the Betzone Reward Zone. Bonus 1: £10 worth of free sports bets after first five settled sports bets placed of £10 or over. Bonus 2: Up to £50 worth of free sports bets.

7
Bet365_120x120
Bet365
4.3
Bet £10 & Get £50 in Free Bets
uk
UK Licensed
Competitive Odds
Bet £10 & Get £50 in Free Bets for new customers at bet365. Min deposit requirement. Free Bets are paid as Bet Credits and are available for use upon settlement of bets to value of qualifying deposit. Min odds, bet and payment method exclusions apply. Returns exclude Bet Credits stake. Time limits and T&Cs apply.
8
Unibet_green_120x120
Unibet
4.3
Money back as a bonus up to £40 if your first bet loses + £10 Casino
uk
UK Licensed
Competitive Odds
18+ begambleaware.org. New customers only. Min deposit £10. Money back as bonus if first bet loses. Wagering requirements: sportsbook 3x at min. odds of 1.40 (2/5), casino 50x. Unless forfeited the sportsbook bonus must be wagered before using the casino bonus. Bonus expires 7 days after opt-in. No deposit required for NI customers. Call 08081699314 to claim. Full T&Cs apply. #AD
9
BoyleSports_Logo_120x120
BoyleSports
4.3
£25 Bet Bundle
uk
UK Licensed
Competitive Odds
18+. UK Customers (Excluding NI) only. Cash stakes only. Min £10 stake required for initial £5 free bet. Min odds ½. Max £25 in free bets. Subsequent free bets equal 50% average of each 3 £5 max qualifying bets. 13 settled bets required to receive full £25 free bet. Qualifying bets must be placed on sportsbook within 30 days of opening account. Cashed out bets will not qualify towards your average stake. One free bet offer per customer, household or IP address only. Free bet expires after 7 days. Payment method restrictions apply. T&Cs apply
10
betway_120x120
Betway
4.2
Get £10 in Free Bets
uk
UK Licensed
Competitive Odds
New UK customers only, €10 Min Deposit. 100 % matched free beton your first deposit of €10.1 x wagering at odds of 1.75+ to unlock Free Bets. Debit Card & Paypal deposits only. This offer is valid for 7 days from your new account being registered. Full Terms apply.
11
Kwiff_120x120
Kwiff
4.2
Bet £10 Get £20 (New Customers Only)
uk
UK Licensed
Competitive Odds
New customers & 18+ only | Min. deposit of £/€10 | Qualifying real money bet of £/€10 | Min. odds greater than or equal to 1.50 required | Each way bets excluded | Offer credited within 48 hours | Additional T&Cs apply.
12
Sportingbet_120x120
SportingBet
4.1
Up to £50 in Free Bets
uk
UK Licensed
Competitive Odds
T&Cs: Min deposit £10, Max stake £15, Min Odds 1/1 (2.0); Max free bet £15; New players only; +18; T&Cs. If a player loses their first bet (on minimum odds of 2.0), we will offer a matching free bet (of up to £15). Neteller and Skrill excluded.
13
tonybet120x120new
TonyBet
4.1
100% Welcome Bonus Up To £50
uk
UK Licensed
Competitive Odds

Sportsbook only. Bonus is 100% of first deposit, up to a maximum of £50. Minimum deposit of £10. Bonus must be claimed withing 3 days. Wagering requirements apply. Bonus amount cannot be withdrawn. Further T&C apply.

14
MobileWins-logo-120x120
Mobile Wins
4.1
World Cup Welcome Pack up to £100 Free Bets
uk
UK Licensed
Competitive Odds
New Players Only. Opt-in required. Stake of qualifying bets not returned. Free bets are a one-time stake of £/$/€20, £/$/€30, £/$/€50, respectively. Minimum odds of 1.5. 1X wagering the winnings. Wagering occurs from real balance first. Wagering requirement is calculated on bonus bets only, wagering starts from real funds. Maximum Conversion £200. Valid for 7 Days from issue. Excluded Skrill deposits. Full Terms apply.
15
BetUK Black-120x120
Betuk
4.0
BET £10 GET £30 IN FREE BETS
uk
UK Licensed
Competitive Odds

T&Cs apply. New customers, Deposit & Place a Bet within 7 days, and settle a £10 minimum bet at odds of 4/5 (1.8) or greater, to be credited with 3x £10 free bets: 1 x £10 Horse racing, 1 x £10 Free Bet Builder and 1 x £10 Football. Stake not returned. Opt-in required. 18+ BeGambleAware.org.

16
mrplaycasino_120x120
New
Mr.Play
4.0
Bet £10 & Get £10
uk
UK Licensed
Competitive Odds

18+, Welcome Bonus: New Players only, 1st Deposit, Min Deposit: £10, max £10 free bet valid for 14 days, bets must be placed at odds of 1/1 or greater and be settled within 14 days of placement. System bets no eligible.

17
BetVictor_Logo_120x120
BetVictor
4.0
World Cup Welcome Offer - Bet £10 Get £50
uk
UK Licensed
Competitive Odds
18+ Opt in, bet £10+ at odds 2.00+, in 7 days. No cash out. Get 4x £10 Free Bets on selected events. Plus a £10 Slot Bonus, selected games, wager 20x to withdraw max £250. 7 day bonuses expiry. Card payments only. Click for T&Cs begambleaware.org
18
Ladbrokes_120x120
Ladbrokes
4.0
Bet £5 & Get £20 In Free Bets
uk
UK Licensed
Competitive Odds
18+ New UK+IRE customers. Paypal and certain deposit types and bet types excluded. Min £5 bet within 14 days of account reg at min odds 1/2 = 4 x £5 free bets. Free bets valid for 7 days on sports, stake not returned, restrictions apply. T&Cs apply.
19
SBK_120x120
SBK
4.0
Bet £10 Get £30 in Free Bets
uk
UK Licensed
Competitive Odds
New UK, IE & Malta customers only. Min £10/€10 first deposit using Debit Card. Place a bet of £10 at min odds of 1.5. Free bets expire in 90 days. 18+. BeGambleAware.org. Full T&Cs apply.
20
SportingIndex_Logo_120x120
New
Sporting Index
3.9
Bet £10 Get £20
uk
UK Licensed
Competitive Odds
*New clients only. Applies to first £10+ bet at odds of 2.00 (1/1) or greater. Qualifying bet to be place within 14 days of account opening. First £10 Free Bet will be issued once the qualifying bet settles. Second £10 Free Bet will be issued 24 hours later. Free Bets valid for 7 days and stake not returned. Cashed out or voided bets do not qualify. Full terms apply. 18+ begambleaware.org
21
MonsterCasino-Logo-120x120
Monster Casino
3.9
Deposit & Bet £10 Get £30 Free Bets
uk
UK Licensed
Competitive Odds
New Players Only. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings, Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Vaild for 7 days from issue.
22
TheOnlineCasino_120x120
The Online Casino
3.9
Bet £10 Get £30 Free Bet
uk
UK Licensed
Competitive Odds
New Players Only. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from issue. Withdrawal requests voids all active/pending bonuses. Excluded Skrill deposits. Full Terms apply.
23
Spreadex-logo-120x120
Spreadex
3.8
Get £40 In Bonuses
uk
UK Licensed
Competitive Odds
Spread betting losses can exceed deposit. 18+ begambleaware.org Plus Best Odds On All Premier League Matches (fixed odds Match Odds, pre-match v top 5 bookies on Oddschecker). Full T&Cs apply.
24
Spinzwin casino-120x120
Spinzwin
3.8
Bet £10 Get £20 Free Bets
uk
UK Licensed
Competitive Odds
New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £20, min odds 1.5 stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 days from issue. Withdrawal requests voids all active/pending bonuses. Excluded Skrill deposits. Full Terms apply.
25
Britainbet_120x120
BritainBet
3.8
Bet £10 Get £30 Free Bets
uk
UK Licensed
Competitive Odds
New Players Only. Free bet - one-time stake of £10, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from issue. Withdrawal requests voids all active/pending bonuses. Excluded Skrill deposits. Full Terms apply.
26
JeffBet_120x120
JeffBet
3.8
Bet £10 Get £30 Free Bets
uk
UK Licensed
Competitive Odds
New Players Only. Min £10 qualifying bets, stake not returned. Free bet - one-time stake of £30, min odds 1.5, stake not returned. 1X wager the winnings. Wager from real balance first. Wager calculated on bonus bets only. Max conversion: £200. Valid for 7 Days from issue. Withdrawal requests voids all active/pending bonuses. Excluded Skrill deposits. Full Terms apply.
27
Netbet_white
NetBet
3.6
Bet £10 Get £10 In Free Bets
uk
UK Licensed
Competitive Odds
DEPOSIT AND BET £10 MINIMUM ODDS 1/2 (1.50) / £10 FREEBET / VALID 7 DAYS / T&CS APPLY / 18+
28
Betfair_120x120
Betfair
3.6
Bet £10 Get £30 In Free Bets
uk
UK Licensed
Competitive Odds
New Customer offer. Place a min £10 bet on the Sportsbook on odds of min 1/2 (1.5), get £30 in Free Bets. Rewards valid for 30 days. SMS verification required. Only deposits via cards will qualify. T&Cs apply. Please Gamble Responsibly

How to Calculate Your Winnings Using Decimal Odds

Although there are many decimal calculators available online, it is incredibly straightforward to calculate your returns manually.

Example:

  • £10 on odds of 2.20 = 10 x 2.20 = £22.00 (including stake). This would see a profit of £12 (£12 + £10 stake returned)

Odds – 2.20

Stake – £10

Winnings – £12

Total Return – £22

  • £1 on odds of 4.50 = 1 x 4.50 = £4.50 (including stakes). This would see a profit of £3.50 (£3.50 + £1 stake returned)

Odds – 4.50

Stake – £1

Winnings – £3.50

Total Return – £4.50

Whether you’re looking at football betting markets or enjoying a wager on the Grand National, decimal odds will always be calculated in the same way:

Stake x Decimal Odds = Returns

Returns – Stake = Profit

How to Convert Decimal Odds to Fractional Odds

Here at BetonSports, we have reviewed a large number of UK betting sites, many of whom use fractional odds. However, it is far simpler to calculate your returns using decimal odds.

It is also incredibly straightforward to convert decimal odds into fractional odds and you don’t have to be an experienced punter in order to do this.

To work out the fractional odds, you first must remove the 1 (the stake) from the decimal.

 

Example:

  • 1.80 becomes 0.8 OR 2.25 becomes 1.25
  • You must then multiply both this number and the stake by 100
  • 1.25\1 Becomes 125/100
  • You must then find the common denominator (in this case dividing by 25)
  • * 125/25 = 5 * 100/25 = 4 * 5/4 * 2.25 = 5/4

Example 2:

  • 0.8/1 Becomes 80/100
  • Common denominator (In this case is 20)
  • * 80/20 = 4 * 100/20 = 5 * 4/5 * 1.80 = 4/5

Decimal to Fraction Conversion Table

DecimalFractional
1.201/5
1.444/9
1.707/10
2.001/1 (Evens)
2.255/4
2.506/4
3.002/1
4.003/1
4.507/2
5.509/2
6.005/1
11.0010/1
17.0016/1
21.0020/1
51.0050/1
101.00100/1
1001.001000/1

How to Convert Decimal Odds to American Odds

Although there are similarities between decimal odds and American odds, there are some fundamental differences between them.

American odds are written in both positive and negative and therefore different conversion methods are required.

To convert decimal odds of 2.00 or greater (evens) use this formula:

(Decimal – 1) x 100

  • Example 1:

Decimal Odds – 2.25

(2.25 – 1) = 1.25

x 100 = 125

American odds = +125

  • Example 2:

Decimal Odds – 4.50

(4.50 – 1) = 3.50

X 100 = 350

American odds = +350

To convert decimal odds of 1.99 or less use this formula:

(-100) divided by (decimal -1)

  • Example 1:

Decimal Odds – 1.80

1.80 -1 = 0.80

-100 / (0.80) = -125

American odds = -125

  • Example 2:

Decimal Odds – 1.60

1.60-1 = 0.60

-100 / (0.60) = -166

American odds = -166

Decimal Odds to American Odds Conversion Table

DecimalAmerican
1.20-500
1.22-450
1.25-400
1.29-350
1.30-333.3
1.33-300
1.36-275
1.44-225
1.33-300
2.25125
2.38137.5
10.00900
11.001000
21.002000
51.005000
101.0010000
1001.00100000

Calculating Sports Odds for Different Markets

In the UK, football betting is extremely popular and it is incredibly simple to calculate your returns for each market.
In a game of soccer, there are three possible outcomes – Home Win, Draw, Away Win.

  • Typically, a home win will be a shorter price. If the hosts are 1.70 and you bet £20 on them to collect three points, your returns will be calculated as:

1.70 x 20 = £34
Profit £14 + £20 stake

  • A draw will often be a bigger price and if it’s 3.65 to end all-square, your returns will be calculated as:

3.65 x 20 = £73
Profit £53 + £20 stake

NFL & NBA Betting

In NFL or NBA betting, some UK bookmakers will price up each outcome using decimal odds. This can subsequently be converted into American odds.
In NBA, the points spread will be set by the bookmaker and is often based on recent form and head-to-heads. Most bookies will make the points spread market a 50/50 outcome and each +/- points will be 1.91.

£20 on a team to overcome the -5 points spread at 1.91, your returns will be calculated as:
1.91 x 20 = £38.20
Profit £18.20 + £20 stake

Total Points

The total points market will also be priced up as a 50/50 chance and each outcome will typically be 1.91.
£20 on Over 218 total match points at 1.91, your returns will be calculated as:
1.91 x 20 = £38.20
Profit £18.20 + £20 stake

The money line market odds will greatly vary and this will depend on a number of aspects including recent form, injuries and home court advantage.
£20 on the hosts at 1.25, your returns will be calculated as:
1.25 x 20 = £25
Profit £5 + £20 stake