Decision Fatigue Calculator
Estimate your remaining "Decision Budget" for the day.
Enter your details to calculate budget.
How to Use the Decision Fatigue Calculator
Willpower is a finite resource. This tool estimates how much mental energy you have left based on your activity, stress, and biological state.
- Count Decisions: Estimate the volume of choices you've faced today.
- Rate Complexity: Were they simple "yes/no" or complex strategic moves?
- Check Biology: Input hunger and sleep stats (crucial for brain energy).
- Get Budget: See your remaining percentage and plan accordingly.
Why You Make Bad Choices at Night
Decision fatigue explains why people tend to cheat on diets, skip workouts, or make impulsive purchases in the evening. As your "decision budget" depletes, your brain seeks the path of least resistance.
- Trade-offs: Every choice involves a trade-off, which taxes the brain.
- Glucose: Thinking burns glucose. Low blood sugar = poor decisions.
- Restoration: Sleep and rest are the only ways to fully recharge.
Examples
Scenario A (Morning CEO): 5 big decisions, well rested, just ate → Budget: 85% (High)
Scenario B (Afternoon Slump): 50 small emails, skipped lunch → Budget: 42% (Warning)
Scenario C (Late Night): 100+ choices, stressed, hungry → Budget: 12% (Empty)
Frequently Asked Questions
What is decision fatigue?
Decision fatigue is the deteriorating quality of decisions made by an individual after a long session of decision making. It's why you might eat junk food at night after a hard day.
How can I prevent decision fatigue?
Automate trivial choices (like what to wear), make important decisions in the morning, and ensure you're well-fed and rested.
Does hunger affect decision making?
Yes! The brain consumes 20% of your body's energy. When glucose levels drop (hunger), your brain switches to impulsive, low-energy decision making.