How do I find the hours between two times?
Pick a common pair below, or open any page like /hours-between/9-am-and-5-pm. Each gives the exact hours and minutes, handles overnight spans, and — for bedtime-to-alarm pairs — the sleep angle.
| From | To | Hours | |
|---|---|---|---|
| 9:00 AM | 5:00 PM | 8 | open → |
| 8:00 AM | 5:00 PM | 9 | open → |
| 9:00 AM | 6:00 PM | 9 | open → |
| 11:00 PM | 7:00 AM | 8 | open → |
| 10:00 PM | 6:00 AM | 8 | open → |
| 12:00 AM | 8:00 AM | 8 | open → |
| 7:00 AM | 3:00 PM | 8 | open → |
| 2:00 PM | 10:00 PM | 8 | open → |
| 11:00 AM | 7:00 PM | 8 | open → |
| 6:00 AM | 2:00 PM | 8 | open → |
| 9:00 PM | 5:00 AM | 8 | open → |
| 8:00 AM | 4:00 PM | 8 | open → |
Sleep calculator, time difference between cities, jet lag by route.
Count forward on the clock from the start time to the end time. If the end time is earlier in the day than the start, the span crosses midnight, so you add the hours after midnight to the hours before it.
Yes. For example, 11:00 PM to 7:00 AM is 8 hours, counted across midnight.
Yes — put your bedtime and wake-up time in and you get hours in bed. To make the wake-up time land at the end of a sleep cycle, use the sleep calculator.
Not because it rings louder. Because it removes every way your half-asleep brain talks you back into bed.
Swiping an alarm away is a reflex you can perform while still asleep. A mission needs your thinking brain switched on — and once it is on, sinking back under is much harder.
Force-quit the app, restart the phone, flip it to silent, turn the volume down. The alarm re-arms and keeps going until the mission is actually done.
Photo and barcode missions are anchored to a spot in another room, so the only way to stop the noise is to stand up and walk there. You cannot pre-stage it from bed.
A sleep forecast before bed, bedtime reminders and wake-up streaks — because the 6 AM problem usually starts at 1 AM.