Wake Up Calculator

With the wake-up calculator, you can check:

• What time to wake up after going to sleep at a particular time; or
• What time to go to sleep to wake up at a particular hour?

We all had those days when we struggled to open our eyes in the morning. Our calculator is here to make that as rare as possible. Read on to learn if there's the best time to wake up and what you can do to wake up easier.

There's no universal best time to wake up. You should wake up after sleeping for long enough, which is 7 to 9 hours for adults up to 64 years old and 7 to 8 hours for adults older than that. It's even longer than that for teens!

Additionally, it would be best if you didn't interrupt your sleep cycles. Sleep cycles are, on average, around 90 minutes, and you should get 5-6 cycles every night.

To make waking up easier, try these things:

1. Work out a sleeping routine — Go to sleep and wake up at the same time every day. But before setting a routine, think about how much sleep you need. If you've been sleeping for 7 hours a day, and you're still tired – maybe adding half an hour of sleep every day will fix your waking up problems?

2. Let in some light — Let the natural light wake you up. Open the curtains, or ask your spouse to do it if they wake up before you. If that's not possible, have you thought about getting a light alarm clock?

3. Plan a morning routine — Think of this as having something to look forward to. Instead of waking up at the last minute and rushing to work, make some time to eat breakfast, work out, listen to music, or just read under the blanket.

Our wake up calculator can give you answers to two questions:

1. What time would I wake up if I go to sleep at a particular time?
2. What time should I go to sleep to wake up at a specific time?

Now, think about your sleeping habits — how long does it take you to fall asleep? Type the number in the first field of the calculator. If you know the average duration or length of your sleep cycles, you can edit our default values by ticking the "Enter custom sleep cycle lengths" checkbox. We used 90 minutes as the default length of the first and succeeding sleep cycles.

1. If you're going to sleep at a specific sleeping time and want to check when to wake up to feel well-rested, you can do that by selecting your preferred sleeping time under our calculator's Your wake-up times section.

2. If you want to wake up at a specific time, select your planned wake up time under the Your sleeping times section of our tool. The calculator will tell you when to go to sleep for recommended 1 to 6 sleep cycles.

We created more sleep-related tools. Check them out:

• Sleep calculator;
• Circadian rhythm calculator;
• Sleep cycle calculator;
• Sleep time calculator;
• REM sleep calculator; and
• 90 minute sleep cycle calculator.