Tools
Free calculators for crypto casino math
Interactive tools that do the probability for you. Every result shows the formula behind it.
Calculators
- ToolBlackjack Calculator: The Best Move for Any Hand and Rule SetFree blackjack strategy calculator: enter your cards, the dealer's upcard and table rules to get the basic-strategy move and house edge from 10M hands.
- ToolDice Odds Calculator: Win Chance, Multiplier and Expected LossFree dice odds calculator: win chance and payout for crypto dice at any target and house edge, plus the exact odds of rolling any total with 1 to 6 dice.
- ToolChance Calculator: Probability of a Win, a Miss or a Losing StreakFree chance calculator: enter a probability and number of tries to get the chance of at least one win, zero wins and an exact losing-streak probability.
- ToolMartingale Strategy Calculator: How Long Your Bankroll LastsFree martingale strategy calculator: find the losing streak that breaks your bankroll, how often it hits, and simulate up to 20,000 sessions in-browser.
- ToolRoulette Payout Calculator: Winnings, Win Chance and Expected LossFree roulette payout calculator: pick a wheel and up to three bets to see what each pays, its win chance, expected value and the edge of the combination.
- ToolGas Fee Calculator: What USDT Network Fees Cost You as a PlayerFree gas fee calculator for USDT: enter the fee your wallet shows, or ETH gas and gwei, to see total fees, % of deposit and the house-edge equivalent.
- HubUSDT converter: live Tether prices in your currencyFree USDT converters: live Tether price in INR, EUR, BRL, AUD, GBP, CAD, RUB, PHP, IDR, TRY, AED, MXN and USD, both directions.
- HubFree random tools you can trustFree random tools: random number generator, online dice roller, coin flip and spin-the-wheel picker. Cryptographic randomness and exact odds, no sign-up.
- ToolRandom Number Generator: Pick Fair Random Numbers in Any RangeFree random number generator for any range. Pick one or up to 1,000 numbers, with or without repeats. Uses your browser's cryptographic randomness.
- ToolOnline Dice Roller: Roll Any Dice, With Exact Odds of Your TotalFree online dice roller for D&D and board games: roll up to 50 dice from d4 to d100, add modifiers, roll a d20 with advantage, and see the odds of your total.
- ToolCoin Flip Online: Heads or Tails, With Streak OddsFlip a coin online: heads or tails with a true 50/50 chance. Flip 10, 100 or 1,000 coins at once and see totals and the longest streak.
- ToolSpin the Wheel: A Fair Yes-or-No Wheel and Random PickerFree spin-the-wheel tool: a yes or no wheel, a number wheel or your own list of names. Every slice has exactly the same chance. No sign-up.
How our tools work
Each calculator runs in your browser and shows a default result even before you change anything. You can share a link to any result, and bloggers are welcome to embed the tools with a credit link.
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Blackjack calculator: the basic-strategy move for any hand, plus the house edge for each rule set from our 10-million-hand simulation.
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Dice odds calculator: win chance, multiplier and expected loss for crypto dice, and the odds of any total with regular dice.
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Chance calculator: the chance of at least one win in N tries, and of a losing streak of any length.
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Martingale calculator: how many losses your bankroll survives, plus a simulator that runs thousands of sessions in your browser.
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Roulette payout calculator: payouts, win chances and the house edge for any combination of bets on three wheel types.
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USDT network fee calculator: what deposit and withdrawal fees cost as a share of your bankroll, compared with the house edge.
Random tools and converters
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Random tools: a random number generator, dice roller, coin flip and spin-the-wheel picker, all using cryptographic randomness and showing the odds behind each result.
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USDT converters: live Tether prices in rupees, euros, reais, pounds and more.