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Sleep Cycle Calculator
Wake up refreshed by timing your 90-min sleep cycles
A free sleep calculator built around natural 90-minute sleep cycles. Enter when you need to wake up, or when you’re going to bed, and get the best times to sleep or set your alarm so you wake between cycles. Adjust fall-asleep time, cycle length and age group. It also includes a power-nap timer that avoids grogginess and a 7-night sleep debt tracker. No signup, no app needed.
Hey everyone! 👋
Have you ever slept a full 8 hours and still woken up groggy, while 6 hours sometimes leaves you feeling fresh? A big reason is when your alarm goes off. Waking up in the middle of a deep sleep cycle feels terrible. Waking at the end of a cycle feels much easier.
We wanted a simple way to plan sleep around those cycles without installing another tracking app. The first version only worked backwards from your wake-up time. While building it, we added the reverse (“I’m going to bed now”), plus settings for how long you take to fall asleep, cycle length and age group, since sleep needs change with age. People also kept asking about naps and catching up on lost sleep. So we added a power-nap timer and a 7-night sleep debt tracker.
It’s 100% free with no signup. Sweet dreams, and let us know what you think! 😴🙌
About Sleep Cycle Calculator on Product Hunt
“Wake up refreshed by timing your 90-min sleep cycles”
Sleep Cycle Calculator was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #4 on the daily leaderboard. A free sleep calculator built around natural 90-minute sleep cycles. Enter when you need to wake up, or when you’re going to bed, and get the best times to sleep or set your alarm so you wake between cycles. Adjust fall-asleep time, cycle length and age group. It also includes a power-nap timer that avoids grogginess and a 7-night sleep debt tracker. No signup, no app needed.
On the analytics side, Sleep Cycle Calculator competes within Health & Fitness, Productivity and Lifestyle — topics that collectively have 748.7k followers on Product Hunt. The dashboard above tracks how Sleep Cycle Calculator performed against the three products that launched closest to it on the same day.
Who hunted Sleep Cycle Calculator?
Sleep Cycle Calculator was hunted by Freewww. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Sleep Cycle Calculator including community comment highlights and product details, visit the product overview.
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