Calculators

Calculate your estimated annual plastic consumption based on your daily habits and usage.

Estimates your COVID-related plastic pollution and suggests ways to minimize it.

Calculate the volume of a rectangular box in cubic meters and convert between various volume units.

Converts between decimeters and meters.

Calculates the depth of a countersunk hole based on the screw head diameter and countersink angle.

Calculates the thread pitch of a threaded fastener, given measurements.

Calculates the dimensions of metric bolt and nut threads, including major diameter, pitch, and minor diameter.

Calculates the pressure or temperature of a gas under constant volume conditions using Gay-Lussac's Law (P1/T1 = P2/T2).

Calculates the number of moles from the mass of a substance and its molecular weight.

Calculates the lattice energy of an ionic compound using a simplified Born-Landé equation. This calculator provides an estimate of the energy required to separate one mole of a solid ionic compound into gaseous ions.