Three free tools, built from the ground up for UK horse racing and sports bettors. Whether you need an exact lay stake for a free bet offer, the returns on a Lucky 15 with mixed results, or a disciplined staking plan to protect your betting bank you are in the right place. No sign-up, no ads, no nonsense. Just the numbers.
Matched Betting Calculator
The exact lay stake for every qualifying bet and free bet with commission already factored in.
Matched betting is mathematically risk-free when the numbers are right. A lay stake that is even a few pence off leaves you exposed on one side of the position. Our matched betting calculator gives you the precise figure for qualifying bets, SNR (Stake Not Returned) free bets, and SR (Stake Returned) free bets instantly.
- Qualifying Bet, Free Bet SNR, and Free Bet SR modes
- Under Lay, Standard Match, and Over Lay options side by side
- Exchange commission and back commission support
- Copy-to-clipboard lay stake buttons paste straight into Betfair
- Advanced mode: back commission and Part Lays Already in Place
- Simple and Advanced modes beginners and experienced arbers both covered
Best for: Punters extracting bookmaker sign-up offers and reload offers. Matched bettors working through Betfair, Betdaq, or Smarkets. Anyone who has ever lost money on a free bet by using the wrong lay figure.Use the Matched Betting Calculator →
Part Lays Already in Place
Under Lay
Standard Match
Custom Match
Drag slider left and right to alter your custom lay
18+ Only. Gambling should be fun. Never bet money you cannot afford to lose.
Bet Calculator
Exact returns for every UK bet Singles to Goliaths with a full line-by-line breakdown.
The only UK bet calculator you need for the full range of UK bet types. Enter your selections, mark each one Win, Placed, or Lose, and get the complete returns breakdown total stake, total return, net profit, and every individual combination listed. Covers all thirteen standard UK bet types.
- Singles, Doubles, Trebles, and 4–12 selection Accumulators
- Patent (7 lines), Yankee (11), Lucky 15, Canadian (26), Lucky 31
- Heinz (57 lines), Lucky 63, Super Heinz (120), Goliath (247)
- Each-way support with per-selection Win / Placed / Lose results
- Per-selection place fractions: 1/4, 1/5, or 1/10 set independently
- Per Line and Total Stake modes
- Full line-by-line breakdown table see every combination’s profit
Best for: Horse racing punters with multiple selections on a Saturday card. Football accumulator bettors checking returns before the final game. Anyone double-checking a bookmaker’s payout on a Lucky 15 or Heinz with mixed results.Use the UK Bet Calculator →
Selections & Odds (Decimal)
| Line Type | Selections | Combined Odds | Stake | Return | Profit |
|---|
Staking Plan Calculator
Work out exactly how much to bet and stop letting losing runs wipe out your bank.
Picking winners is only half the job. Without a staking plan, even a profitable tipster’s selections will drain your bank if you size bets inconsistently. Our staking plan calculator tells you precisely how much to stake using three of the most trusted bankroll management methods in professional betting.
- Percentage Staking a fraction of your current bank, self-adjusting
- Fixed Staking the same cash amount each time, ideal for tipster points
- Kelly Criterion mathematically optimal stake based on your edge and the odds
- Full, Half, and Quarter Kelly outputs manage variance to your comfort level
- Confidence tiers table: Very High through to Low scale any selection instantly
Best for: Punters following a tipster service who want to convert points into actual stakes. Value bettors who assess their own probabilities. Anyone who has ever “chased” a losing run and regretted it.Use the Staking Plan Calculator →
| Confidence | % of Bankroll | Stake |
|---|
18+ Only. Gambling should be fun. Never bet money you cannot afford to lose.
Why Every Serious UK Punter Needs These Tools
The difference between recreational punters and those who show a long-term profit is not luck or insider knowledge it is process. The three biggest process failures punters make, and what each calculator fixes:
Failure 1: Getting the Maths Wrong and Calling It Bad Luck
A lay stake that is £2 too low on a £20 free bet does not feel significant in the moment. But across 50 free bet extractions, that is £100 of profit silently evaporating. Incorrect bet returns calculations mean you may be settling for payouts that are wrong and never knowing it. And staking randomly instead of systematically can turn a tipster with a genuine 8% ROI into a net loser for you personally. The calculators on this site eliminate all three sources of arithmetic error before they cost you money.
Failure 2: No Plan for How Much to Bet
Most punters decide their stake based on gut feel which tends to mean larger stakes on selections they feel strongly about (often at short prices with poor value) and smaller stakes when they are less certain (often when the expected value is actually at its highest at longer odds). A staking plan reverses this tendency by anchoring every bet to either a consistent percentage of the bank, a fixed unit, or a mathematically derived fraction based on the actual edge. The result over hundreds of bets is dramatically smoother bankroll growth.
Failure 3: Leaving Free Bet Value on the Table
UK bookmakers collectively hand out tens of millions of pounds in free bets and promotions every year. Punters who understand matched betting capture 70–85% of every free bet’s face value as guaranteed profit. Those who do not or who calculate their positions incorrectly either miss out entirely or lose part of the value through imprecise lay stakes. The matched betting calculator is the tool that closes that gap.
How the Three Calculators Work Together
Each calculator solves a distinct problem, but they complement each other as part of a complete betting approach:
- Start with the Staking Plan Calculator. Decide your bankroll management approach before you place a single bet. Set your percentage or fixed stake and use the confidence tiers as your reference for every selection going forward. Review monthly as your bank grows or contracts.
- Use the Matched Betting Calculator for every bookmaker offer. Before touching a new account or a reload offer, run the qualifying bet through the calculator to check the loss. Then extract the free bet with the correct SNR or SR lay stake. Every penny of the guaranteed profit depends on getting the lay right.
- Use the UK Bet Calculator after the results are in. Check returns on any Saturday accumulator, each-way multiple, or Lucky 15 the moment results come through. If you have mixed results some winners, some placed, some losers the line-by-line breakdown shows you exactly where the profit and loss sat across each combination.
Quick Reference: UK Bet Type Line Counts
The most common question when building a multiple is how many lines it contains and therefore what the total stake will be. Here are the standard numbers:
- Double 2 selections, 1 line
- Treble 3 selections, 1 line
- Patent 3 selections, 7 lines (includes Singles)
- Yankee 4 selections, 11 lines (no Singles)
- Lucky 15 4 selections, 15 lines (includes Singles)
- Canadian / Super Yankee 5 selections, 26 lines (no Singles)
- Lucky 31 5 selections, 31 lines (includes Singles)
- Heinz 6 selections, 57 lines (no Singles)
- Lucky 63 6 selections, 63 lines (includes Singles)
- Super Heinz 7 selections, 120 lines (no Singles)
- Goliath 8 selections, 247 lines (no Singles)
All of the above are calculated automatically in the UK Bet Calculator you never need to count or multiply lines manually.
Free Betting Calculators Frequently Asked Questions
Are these betting calculators completely free?
Yes all three calculators are completely free to use with no sign-up, no subscription, and no limits on usage. The matched betting calculator, UK bet calculator, and staking plan calculator are all available on their dedicated pages whenever you need them.
Which calculator should I use for a Lucky 15?
Use the UK Bet Calculator. Select Lucky 15 from the bet type dropdown, enter your stake mode and stake amount, enter the decimal odds for each of your four selections, mark each one Win, Placed, or Lose based on the results, and click Calculate Returns. The summary cards show your total return and net profit instantly, and you can tick “Show all bet lines” to see the full 15-line breakdown.
What is matched betting and do I need a calculator for it?
Matched betting is a technique that uses bookmaker free bets and promotions alongside a betting exchange lay bet to cover all outcomes and guarantee a profit from the free bet value. A calculator is essential even a small error in the lay stake leaves you exposed on one side of the bet. The matched betting calculator gives you the precise lay stake for qualifying bets, SNR free bets, and SR free bets with commission already included.
What is the Kelly Criterion and should I use it?
The Kelly Criterion is a mathematical formula that calculates the optimal fraction of your bankroll to stake based on your estimated edge: the probability you assign to the selection versus the probability implied by the odds. If there is a genuine edge, Kelly tells you exactly how much to bet. Full Kelly is mathematically optimal but produces high variance most bettors use Half or Quarter Kelly for more manageable swings. The staking plan calculator shows all three alongside each other so you can choose the volatility level you can stick to.
Can I use these calculators on my phone?
Yes all three calculators are fully mobile responsive. The matched betting calculator is designed with the copy-to-clipboard button positioned so you can copy the lay stake directly into the Betfair or Betdaq app on the same device. The UK bet calculator’s odds grid collapses to a two-column layout on smaller screens, and the staking plan calculator’s results are displayed in clearly readable cards on any screen size.
How do I work out returns on an each-way bet?
Use the UK Bet Calculator with the Each-Way checkbox ticked. Set your stake mode and amount, enter the decimal odds for each selection, set the place fraction (1/4, 1/5, or 1/10) for each selection based on the bookmaker’s stated terms, then mark each selection Win (pays win and place), Placed (pays place only), or Lose (pays nothing). The calculator shows the full return split across win and place parts for every combination.
What percentage of my bankroll should I bet per selection?
For most punters, 1%–3% of the current bankroll per selection is a sensible range. At 1%, your bank survives 100 consecutive losers. At 3%, you grow meaningfully during a good run but still retain over 95% of the bank after 15 straight losses. Stakes above 5% on a single selection are considered high-risk for any strategy relying on a long-run edge. Use the staking plan calculator to see exactly what each percentage level means in pounds at your specific bankroll size.
Ready to Start Betting Smarter?
Pick the calculator that matches what you need right now. All three are free, all three work instantly on any device, and all three give you numbers you can act on immediately.Matched Betting Calculator UK Bet Calculator Staking Plan Calculator
