Free Online Calculators

Calculate the gear ratio between two gears based on their number of teeth.

Calculates the roof slope (pitch) based on vertical rise and horizontal run.

Calculate total body fat mass based on body weight and body fat percentage.

Calculate the price per square foot based on total property price and total area.

Estimates the heating power required for a room based on its volume and desired temperature increase.

Calculate the total weight of gravel or aggregate material based on volume and material density.