Free Calculator Widgets

Calculate the average (arithmetic mean) of a set of numbers.

Calculate the geometric mean of a set of positive numbers.

Calculate the harmonic mean of a set of numbers.

Calculate the weighted average of values with different weights.

Calculate logarithms with any base, including common and natural logarithms.

Calculate the nth root of any number.

Perform calculations with binary numbers.

Perform matrix operations including addition, multiplication, and determinant.

Calculate the modulo (remainder after division) of two numbers.

Calculate the quotient and remainder of division.

Calculate percentages, percentage change, and percentage of a number.

Calculate the volume and surface area of a cylinder.

Calculate the kinetic energy of an object in motion.

Calculate the gravitational potential energy of an object.

Calculate speed, distance, or time using the relationship between these quantities.

Calculate voltage, current, resistance, or power using Ohm's Law.

Calculate the dew point temperature from air temperature and humidity.

Calculate compound interest with customizable compounding frequency.

Calculate VAT, gross and net prices.

Calculate discounted prices, savings, and promotion values.

Convert between different units of length.

Convert between different units of weight and mass.

Convert between Celsius, Fahrenheit, and Kelvin.

Convert between different units of speed.

Convert between different units of pressure.

Convert between different units of area.

Encode and decode text using the Caesar cipher encryption method.

Calculate optimal sleep and wake times based on sleep cycles.