Test any number for primality with Miller-Rabin, then get its prime factorisation and every divisor.
Mean, median, mode, quartiles, range and standard deviation for any list of numbers.
Add tax to a net amount or strip it back out of a gross amount, with common rates one click away.
Monthly payment, total interest and full amortisation for any loan term and rate.
Mass to moles to STP volume for any compound, plus M, mM, mol/L, g/L, mg/mL and ppm, with the molar mass table shown.
Acoustic Doppler for a moving source and observer, and the relativistic longitudinal factor for light, kept strictly apart.
Wien's peak wavelength and the Stefan-Boltzmann flux, with the luminosity of a star at the radius you type.
Archimedes for any object in any fluid: buoyant force, apparent weight and a float or sink verdict from the densities.
