Calculators

Calculates the number of light bulbs needed to adequately illuminate a room based on its dimensions, desired light level, and bulb specifications.

This calculator helps analyze your caffeine intake from coffee, assesses potential health impacts, and provides personalized coffee consumption recommendations. It supports different brewing methods.

Calculates points for each event in a heptathlon based on performance marks.

Calculate your acceptance rate based on the number of applications submitted and the number of acceptances received.

Estimates the volume and weight of soil needed for your garden or landscaping project based on dimensions and soil density.

Calculates your equivalent age if you lived on other planets in the solar system, based on their orbital periods.

Determines the grade needed on a final exam/assignment to achieve a desired overall course grade.

Calculate the alcohol percentage (ABV) of your homebrew using specific gravity measurements. Supports multiple brewing methods such as beer, wine, and spirits.

Converts between quarts (US liquid) and pounds, based on the density of the substance. This calculator uses the density of water (1.0 kg/L or approximately 2.086 lbs/quart) as a default. You can adjust the density to match the substance you are measuring.

This calculator converts pressure between torr and atmospheres (atm).