The MyTempos time since calculator tells you exactly how much time has passed since any date in the past. Enter a date — a birthday, an anniversary, the day you quit smoking, the start of the year, any moment that matters — and get the elapsed time broken down into years, months, and days instantly.

The result updates as soon as you change the date. No button to press, no page reload. The total in days is also shown, so you can see the same answer at different scales at once.