How Much Sleep Debt Do I Have? Free Calculator + Brutal Truth

Quick answer: use the calculator on the homepage. Below we break down what sleep debt is, signs you have it, simple instructions, and a tongue-in-cheek recovery timeline.

What Is Sleep Debt? (Fun Version)

It’s the IOU your brain writes when you skip your bedtime. We total your weekly shortfall vs the nightly target you pick (usually 7–9h for adults).

Signs You Might Have Sleep Debt

You mistake your phone’s flashlight for sunlight.
Coffee is your love language.
Alarm labels include “try again tomorrow.”
You forgot where you hid your snooze button.

How to Use the Calculator

Pick a target (7–9h typical for adults).
Enter last 7 nights as hh:mm or decimals (e.g., 6:30 or 6.5).
Choose friendly or spicy tone, then Calculate.
Copy/share your result if you dare.

Recovery Timeline (Kinda Real, Kinda Jokes)

Day 1–3: You remember what blinking feels like.
Day 4–7: Yawns downgrade from opera to indie acoustic.
Day 8+: People stop asking if you’re okay.

See Recovery Time Calculator for more.

When to Worry (Serious Bit)

If daytime sleepiness affects safety/health, or you suspect a disorder like insomnia or apnea, talk to a clinician. This site is not medical advice.