World clock, date calculators & precision timers
World clock, time-zone converter, age calculator, business days, Unix timestamps, countdowns, Pomodoro andHIIT timers. Precise, offline-capable, free.
In-content · after first value section
Why TimeGrid?
Transparent time-zone rules, shareable countdown links, keyboard-first timers and presets saved locally — built for classrooms, kitchens and workouts.
FAQ
Is it free?
Yes — every tool is free with no signup and no credits.
Is my data uploaded?
No. Tools run locally in your browser; files never leave your device. Check DevTools → Network.
Does it work offline?
After the first visit the app shell is cached, so calculators and generators keep working offline.
Does it work on mobile?
Yes — touch-friendly, one-tap download, adaptive workers for weak devices.
How do you make money?
Clearly-labeled ads, spaced away from buttons. No paywall, no fake download buttons.
Guides
Unix time and why leap seconds are weird · Business-days math across holidays · Pomodoro that sticks: intervals that work · DST transitions without surprises · Deadlines you can take anywhere — practical, original explainers with examples.