Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Mental Fatigue Calculator

Quantify your mental exhaustion by factoring in daily hours of cognitive work, concentration span, and mental clarity into a single fatigue index. Use it at the end of a demanding workday or when diagnosing burnout risk.

Hours of Mental Tasks Daily (hours)

Concentration Span (minutes)

Mental Clarity (1-10)

Fill in the required fields to see your result.

Psychology

Cognitive Load Calculator

Quantify your mental workload by rating task complexity, multitasking, time pressure, and fatigue on a 1–10 scale. Use it when preparing for demanding work sessions or evaluating burnout risk.

Task Complexity (1-10)

Multitasking Level (1-10)

Time Pressure (1-10)

Mental Fatigue (1-10)

Fill in the required fields to see your result.

Key differences

	Mental Fatigue Calculator	Cognitive Load Calculator
Category	Psychology	Psychology
Inputs required	3	4
Result	Mental Fatigue Score (points)	Cognitive Load (/10)
What it does	Quantify your mental exhaustion by factoring in daily hours of cognitive work, concentration span, and mental clarity into a single fatigue index. Use it at the end of a demanding workday or when diagnosing burnout risk.	Quantify your mental workload by rating task complexity, multitasking, time pressure, and fatigue on a 1–10 scale. Use it when preparing for demanding work sessions or evaluating burnout risk.