Sleep Cycle Timer

Use this page when you want a fast answer to one question: if you fall asleep now, when should you wake up? It works like a sleep timer calculator, but with actual cycle-based wake targets instead of one fixed alarm duration.

Best use case

This page is designed for “sleep now” decisions: if I sleep now, when will I wake up? It is intentionally faster and more immediate than the broader wake-up calculator.

Why This Page Exists Separately

“Sleep cycle timer” queries are usually urgent. The user is not researching sleep science or building a weekly routine. They want a quick calculation from the current moment. That makes this intent distinct from the main wake-up calculator and distinct from longer-form sleep guides.

The timer starts from a practical fall-asleep buffer, then counts forward through 90-minute cycles. The later options usually feel better because they preserve more total sleep and reduce the risk of waking halfway through a cycle.