Calculators

Calculates the amount of sand needed for a paver base, considering the area, sand depth, and sand waste factor.

This calculator categorizes blood pressure readings based on systolic and diastolic pressure levels, identifying whether a reading falls into normal, elevated, or various hypertension stages.

Calculates the volume, mass, and cost of gravel needed for a project, based on the area, depth, and gravel density and price.

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.