Gaming Calculators
17 calculators
Tabletop and settings arithmetic: dice notation and probability, character ability scores, encounter budgeting, sensitivity conversion and coin-flip simulation. Random results come from your device's pseudo-random generator, which is fine for play and not suitable for anything where money or fairness depends on it.
- Coin Flip Simulator Flip a coin any number of times and see the heads, tails and longest streak results.
- Dice Notation Calculator Parse standard dice notation such as 4d6+2 and roll it, showing each die.
- Dice Roller — Roll Multiple Dice with Sides & Modifiers Roll 1–100 dice with 2–1,000 sides online for free. View each individual roll, totals, modifiers, highest and lowest rolls, and use a seed to reproduce results.
- D&D Character Calculator Work out hit points, proficiency bonus, armour class and initiative for a D&D 5e character.
- D&D 5e Encounter Calculator (2024 rules) Build an encounter against the D&D 5e XP budget for your party and check its difficulty.
- eDPI Calculator — Mouse Sensitivity & cm per 360 Turn Convert mouse DPI and in-game sensitivity into eDPI and the distance needed for a full 360.
- Golf Handicap Calculator Estimate a handicap index from your recent score differentials.
- KD Ratio Calculator Calculate your kill-death ratio and KDA across a set of matches.
- Lottery Odds Calculator Work out the odds of winning a lottery from the number pool and how many you must match.
- Minecraft Circle Generator Generate a symmetrical block pattern for a circle or dome in Minecraft.
- Minecraft Bookshelf Level Calculator Estimate the shelf-based enchanting level cap and how many offer slots you can afford. Actual offers are randomized and vary by edition and item.
- Name Picker Pick a random name from a list fairly, with a reusable seed.
- Pokémon Damage Calculator Calculate Pokémon damage from level, move power, attack and defence stats.
- Poker Odds Calculator Turn your number of outs into the odds of improving your hand by the river.
- Random Number Generator Generate random whole or decimal numbers within a range, with a seed you can reuse.
- Spin the Wheel Calculator Spin a wheel of your own options and see which one lands, plus the angle it stopped at.
- Yes or No Generator Use a seeded pseudo-random yes/no draw for a lighthearted prompt.
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Gaming tools include random generators, probability models and game-specific arithmetic. A simulated outcome is not an exact probability, and a game-stat calculation depends on a particular ruleset. Choose the tool that matches the event, notation or version you are working with.
Distinguish a random result from its probability
Dice notation tools interpret an expression, while a dice roller or coin flip produces a sampled outcome. Probability calculators instead apply assumptions about the events and rules; previous simulated outcomes do not force the next result.
Use the relevant game or grouping rules
Character and encounter tools apply a game model, damage tools use their documented assumptions, and team generators distribute a supplied list. Similar-looking scores across different rulesets should not be compared as if they were the same statistic.
Read the version and scope
Check the rules, options and assumptions displayed by the tool. Randomizers are for ordinary play and organization; a simulated sequence or simplified odds model does not guarantee a real-game result or a fair external draw.