Everyday Calculators

Small questions come up constantly — how old exactly, how many days until, what's a fair tip, how many hours did I work this week. These everyday tools answer them instantly and completely. The age calculator gives your precise age in every unit down to live-ticking seconds, plus your next-birthday countdown and life milestones like your 10,000th day.

They're deliberately simple on the surface and thorough underneath: leap years, uneven month lengths and time zones are handled with calendar-exact arithmetic, so the answer matches what an official form or HR department would compute. As with everything on ListCalc, your inputs never leave your device.