Calculators

This calculator helps determine the amount of raw food needed for a dog's diet based on their weight and activity level.

Calculates the probability of different outcomes when rolling multiple dice.

Calculates the theoretical maximum speed of a displacement hull boat based on its waterline length.

Helps divers estimate the amount of weight needed for proper buoyancy based on gear and water type.

Estimates calories burned while running, based on distance/time, pace, and weight.

Calculates density as mass per unit volume (ρ = m/V).

Provides the constant speed of light in a vacuum (c) or calculates the speed of light in a medium using the index of refraction.

Calculates the focal length, object distance, or image distance for a thin lens using the thin lens equation: 1/f = 1/do + 1/di.

Calculates the factorial (n!) of a non-negative integer.

Calculates the sum of an arithmetic or geometric series.