Miscellaneous calculators
Free angle of impact calculator for bloodstain pattern analysis. Enter the width and length of an elliptical blood spatter…
Free NaNoWriMo calculator. Set your word goal and deadline, enter the words you have written so far, and get your daily word…
Free HP calculator for DnD 5e. Find your character's maximum hit points and hit dice pool for any class, level or multiclass…
Find out how many partners you should date before settling down. Based on the optimal stopping problem (the 37% rule), with…
Find out your age on every planet of the Solar System, plus the Moon and Pluto. Enter your birthday or your age in Earth…
Free point buy calculator for DnD 5e. Spend your 27-point budget on the six ability scores, pick an SRD race to apply racial…
Free tip calculator (gratuity calculator). Enter your bill and tip percentage to get the tip amount, total to pay, and the…
Calculate the water volume of your aquarium in US gallons, UK gallons, liters, and more. Supports 7 tank shapes: rectangular,…
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