Calculators

Calculates the required volumes for performing serial dilutions to achieve a desired final concentration from a stock solution.

Calculates the activity coefficient of an ion in a solution using the Debye-Hückel equation or its extended versions.

Calculates the air-fuel ratio (AFR), which represents the mass ratio of air to fuel in an internal combustion engine. This ratio is crucial for efficient combustion and emissions control.

Calculates the molar mass (molecular weight) of a chemical compound or element. Enter the chemical formula to calculate its molar mass.

Displays the notes belonging to various musical scales (major, minor, modes, etc.).

Estimates the exercise intensity level above which anaerobic metabolism significantly increases.

Estimates maximum heart rate based on age. Several formulas exist, providing different estimates.

Calculates the target heart rate zone for fat burning during exercise, based on age and resting heart rate.

Estimates calories burned while shoveling snow based on weight and shoveling time.

Calculates impulse (force times time) and relates it to the change in momentum. It helps understand the relationship between force, time, mass, and velocity in physics.