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Fun Calculators

Lightweight probability, age, games, and curiosity calculators.

Dice Probability CalculatorCalculate the chance of rolling a selected total with multiple dice.Coin Flip Probability CalculatorCalculate the probability of getting exactly a selected number of heads in repeated coin flips.Birthday Paradox CalculatorEstimate the chance that at least two people in a group share a birthday.Age on Planets CalculatorConvert Earth age into age on another planet using orbital period.Dog Age CalculatorEstimate a dog's human-age equivalent from dog age and size.