Casino Tools & Calculators

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Reviewed by the Fruity Free Spins editorial team ยท Last reviewed 10 June 2026
18+ UK bonuses capped at 10ร— wagering (UKGC, 2026) ยท BeGambleAware.org

Welcome to the Fruity Free Spins toolkit โ€” a set of free, instant calculators built to help UK punters make smarter, better-value decisions. No sign-up, no maths, no nonsense. Pick a tool below and get your answer in seconds.

Free calculators for punters

Wagering Requirements Calculator

See exactly how much you must bet to unlock a bonus, factoring in match percentage, game contribution and the new UK 10x wagering cap. Find out whether an offer is genuinely worth claiming before you opt in.

Free Spins Value Calculator

Work out the real cash value of any free spins offer โ€” and the wagering on your winnings. Compare “100 free spins” against “20 wager-free spins” on a like-for-like basis.

Betting Odds Converter

Convert instantly between fractional, decimal, American odds and implied probability. Understand exactly what a price means and spot value bets.

Bankroll & Session Calculator

Estimate how long your bankroll will last and your statistically expected cost to play, based on stake, RTP and speed of play. The smart way to set a budget.

More free crypto tools

Three more calculators built for crypto players, each with a full plain-English guide.

Rakeback Calculator

See how much of the house edge a rakeback deal really returns. Read the full rakeback guide.

๐Ÿ’ธ Rakeback Calculator
Estimated rakebackยฃ10.00
Rakeback = Total wagered ร— House edge ร— Rakeback rate. House edge โ‰ˆ 100% โˆ’ RTP (most slots ~3โ€“5%, Originals like Dice/Limbo ~1%). This is an estimate; check each casino's exact rakeback terms.

Rakeback accrued over time

Cumulative rakeback if you keep this wagering volume going, period after period.

Rakeback accrues linearly with volume: each period returns a fixed slice of the house edge. The line shows the running total over 12 periods at the figures you entered โ€” useful for sizing a VIP/rakeback deal against how much you actually play.

Provably Fair Verifier

Independently check a provably fair bet result in your browser. See how to verify provably fair.

๐Ÿ” Provably Fair Verifier
HMAC-SHA256 resultโ€”
Derived roll (0.00โ€“99.99): โ€”
This computes HMAC-SHA256(serverSeed, clientSeed:nonce) in your browser โ€” the standard provably-fair method. Enter the seeds a casino reveals and confirm the hash matches theirs. Exact result derivation varies by game/casino; the roll shown is a common first-bytes example.

Casino Originals Odds Calculator

Work out the real odds and payouts for Limbo, Dice and Mines. Read our Casino Originals strategy guide.

๐ŸŽฒ Casino Originals Odds Calculator

Limbo

Win chance49.50%

Dice (roll under)

Payout multiplier1.98ร—

Mines (25 tiles)

Cash-out multiplier2.43ร—
All figures assume a 1% house edge (the standard for crypto Originals). Win chance and multipliers are mathematically fixed โ€” no pattern or strategy changes the edge; they only change variance. Always cash out within your bankroll.

Limbo: win chance vs target multiplier

Higher targets pay more but land far less often. The dot marks your current target.

Win chance = 99 ÷ target multiplier (1% house edge). A 2× target wins ~49.5% of the time; a 10× target only ~9.9%. The expected return is identical across all of them โ€” only the variance changes.

Why use our tools?

  • Genuinely free โ€“ no account, no email, no catch.
  • Built for UK players โ€“ updated for the 2026 rules, including the 10x wagering cap.
  • Instant & private โ€“ everything runs in your browser; we never see your numbers.

New to bonuses or crypto play? Browse our guides and explainers for plain-English help on getting the best value safely.

18+. These tools provide estimates for information only and are not a guarantee of results. Please gamble responsibly: BeGambleAware.org.

18+ Please gamble responsibly โ€” gambling can be addictive. BeGambleAware.org ยท GAMSTOP ยท GamCare ยท National Gambling Helpline 0808 8020 133
Fruity Free Spins provides information and comparison only and does not operate any gambling service. Always verify operator licensing on the UK Gambling Commission register before playing. We may earn a commission from links โ€” it never affects our ratings.