zcalc is basically just a better version of bc. There are probably even better CLI calculators out there, but zcalc has the same advantage as bc: you'll almost

zcalc is basically just a better version of bc. There are probably even better CLI calculators out there, but zcalc has the same advantage as bc: you'll almost always have it available (if zsh is available anyway, which is always true for my usage).