Calculators

Estimates calories burned during various activities based on duration, intensity, and weight.

Calculates the intensity or effect of something according to the inverse square law. This law states that the intensity of a phenomenon is inversely proportional to the square of the distance from the source.

Calculates the maximum theoretical efficiency of a heat engine operating between two temperatures.

Calculates the electric field strength created by a point charge.

Calculates the angle of refraction of light as it passes from one medium to another, using Snell's Law. This law describes how light bends when it transitions between two different substances with varying indices of refraction.

Calculates the absolute reticulocyte count, an indicator of bone marrow's production of red blood cells.

Calculates the simple interest earned on an investment or the simple interest owed on a loan.

Calculates the future value of an investment, considering the initial investment, interest rate, and investment duration.

Calculates age based on the Gregorian calendar and two different lunar calendars (Chinese and Islamic).

Calculate the Energy Use Intensity (EUI) of a building, a metric used to measure a building's energy efficiency.