Time may wait for no one... but at least you can calculate it! Whether you're counting down the seconds to retirement, figuring out how many hours are left until Friday, or settling a bet about how old you are (in minutes, seconds, hours, or whatever else), we've got a tool for that.
This page collects DQYDJ's time and date calculators: tools for date math, age calculations, time conversions, and oddly satisfying "time ago" lookups. Bookmark it, because you'll be back. It's just a matter of time.
Calculate days, weeks, months, or years between two dates. Perfect for winning arguments about exactly how long ago something happened.
Calculate hours, minutes, and seconds between times. You know, for calculation purposes.
Ever wondered your age in weeks? Hours? Turn your birthday into surprisingly interesting – and big – numbers. Great for milestone celebrations and existential crises.
Sometimes, the hardest thing to do is sit on your hands until a date – whether that's a holiday, a birthday, or some other special day. With these tools, sit on your hands and stare at a countdown timer!
How long ago was 1990? When is 100 days from today? These calculators answer the "how long ago" and "how long until" questions.
Convert minutes to hours, hours to days, days to years, and every combination in between. Because mental math is overrated when you've got JavaScript.
World clocks, timezone tools, calendars, and other time-related utilities that don't fit neatly into the other categories.
Yes, it's DQYDJ's "junk drawer" of time tools. You know, but not junk and actually useful.
Looking for sunrise, sunset, or solar calculators? Check out our Astronomy Tools.