Educational tool

Fatigue risk calculator

A simple 0–100 score from recent sleep, shift pattern, and commute — for awareness and training contexts. Not a medical assessment.

This page is an educational model. For ongoing prompts tied to your real shift pattern, ShiftCoach is available on Google Play. Open Google Play listing · Features · Pricing

Inputs

Sleep last 24h (hours)Sleep last 48h (hours total)Typical shift length (hours)Consecutive shifts (this block)Includes night shifts this weekOne-way commute (minutes)

Fatigue risk score

Moderate fatigue risk

Higher scores reflect more pressure from short sleep, long or stacked shifts, nights, and commute time — within this educational model only.

Personalised tips

Prioritise a longer anchor sleep as soon as your rota allows — even +60–90 minutes helps recovery.
Night blocks: keep caffeine early in the shift; switch to hydration and lighter meals before wind-down.
Long commute: build a small buffer before shift start so you are not cutting sleep to arrive on time.

Disclaimer: This calculator is for general education and wellbeing awareness. It does not diagnose medical conditions, predict incidents, or replace occupational health, medical, or legal advice.

Turn estimates into habits on your roster

Use ShiftCoach on Android alongside these calculators. See features and pricing first if you prefer a slower decision.

Get ShiftCoach on Google Play Features Pricing

Night shift sleep calculatorShift work statisticsFeaturesPricing

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FAQ

What does the fatigue risk score mean?

The score is a simple 0–100 model based on recent sleep, shift length, consecutive shifts, night work, and commute. It is an educational heuristic, not a clinical assessment.

Is this medical advice?

No. ShiftCoach fatigue calculator is for education and wellbeing awareness only. If you have a health condition, excessive sleepiness, or safety-critical work, speak with a qualified professional.

Why ask about sleep over 24h and 48h?

Fatigue often builds across more than one sleep period. Two windows capture partial recovery and cumulative sleep debt better than a single night’s total alone.

Coming to the Apple App Store soon. Built for shift workers.

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