Sleep Debt Calculator

Track your cumulative sleep debt, not just one bad night

Sleep Debt Calculator logs each night's actual hours slept against a personal sleep-need target and runs a chronological cumulative total across all your logged nights. It's built around the reality that sleep debt accrues gradually and isn't wiped out by one long catch-up sleep — the trend view and running total make that visible night by night.

• →Set your own nightly sleep-need target instead of a generic 8-hour rule
• →Runs a true running total of sleep debt or surplus across all logged nights
• →14-night trend chart shows whether you're digging the hole deeper or climbing out
• →Built-in guidance explains why debt isn't repaid by a single long sleep-in
• →Watermarked by Cikal Studio Labs · Works on any device, no install required