Every date, answered in one tap.

daycount is a small collection of date and time calculators — age, countdowns, timezones, business days and more. Every tool is a single page you can open, use, and close in under a minute. There is nothing to install, no account to create, and no ads.

Everything runs in your browser

The dates you type in never leave your device. There is no backend calculating anything on our servers; every result you see was computed by the JavaScript running inside your own browser. That has three consequences worth knowing about:

• Your data is private by design. We literally cannot see the birth dates, event dates, or timezones you use — they were never transmitted anywhere. See our privacy page for the full detail.
• It works offline. Once a tool page has loaded once, you can put your phone in airplane mode and every calculator will still work. There is no runtime server dependency to break.
• Countdowns are in your local timezone. A user opening our Christmas countdown from Sydney sees the number tick to Sydney midnight on 25 December, not London midnight. This is usually what people actually want.

What you can do here

The eleven core tools cover the majority of everyday date questions: how old am I, how many days between two dates, a live countdown to a wedding, exam, retirement or launch, how many days until Christmas or Diwali, what time it is in another timezone, add or subtract days from a given date, the ISO week number, the day of the week for any date past or future, working days for business-day calculations, a stopwatch, and a timer. Underneath the core tools sit a hundred or so pre-computed pages for specific occasions and city pairs, so a Google search for "how many days until Halloween 2026" or "time in Tokyo when it is 3pm in London" lands you on a page ready with the answer.

Why we built it

Most calculators on the web are wrapped in ads, popups, trackers, and cookie banners. The math itself is a hundred lines of JavaScript. We wanted to see whether stripping away everything except the calculation could still add up to a real product — and it does. Every page is a single readable card, the fonts are editorial, and the countdown numbers use tabular figures so they never wobble as they tick.

How to reach us

daycount is open source. The full code lives at github.com/Deepak1jha/day-count — if you spot a bug or want a new event or timezone pair added, open an issue there.