Science Calculators

Free, accurate science calculators for chemistry, physics, biology, and engineering. Results update instantly as you type — no sign-up required.

Calculates molarity, moles, mass, and volume for any solution — supports solving for any variable.

Calculates final concentration and dilution factor using C1V1 = C2V2.

Calculates engine compression ratio from bore, stroke, deck clearance, and chamber volume.

Calculates density, mass, or volume — solve for any variable with multiple unit options.

Calculates DNA melting temperature, GC content, and AT content from a primer sequence.

Calculates genotype and phenotype ratios for monohybrid and dihybrid genetic crosses.

Calculates kinetic energy in joules, foot-pounds, kWh, and BTU from mass and velocity.