Calculators

This calculator converts units between the Centimeter-Gram-Second (CGS) system and the International System of Units (SI).

Calculates the spindle speed (RPM) and feed rate for machining operations based on cutting speed, tool diameter, and desired feed per tooth.

Estimates the total surface area of a human body using various formulas. Body surface area (BSA) is the measured or calculated surface of a human body. For many clinical purposes, BSA is a better indicator of metabolic mass than body weight because it is less affected by abnormal body fat. BSA is an important factor in many physiological and clinical situations.

Calculates the solar panel size and power needed based on energy consumption and sunlight hours.

This calculator estimates a horse's weight based on its girth and body length measurements.

Converts fuel economy between miles per gallon (MPG) and liters per 100 kilometers (L/100km).

Calculates the molar ratio between two substances in a balanced chemical equation.

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 the frequency (in Hertz) of a specific musical note.

Calculates the relationship between the output gap and cyclical unemployment based on Okun's Law.