Functional Capacity Evaluation Calculator

Enter Evaluation Inputs

Use measured capacity values and actual task demands. The calculator uses a single-column page structure, while the form uses a responsive 3-column, 2-column, and 1-column grid.

Floor-to-Waist Lift (kg)

Maximum controlled lift from floor to waist height.

Waist-to-Shoulder Lift (kg)

Maximum controlled lift from waist to shoulder height.

Carry Capacity (kg)

Maximum weight carried safely during evaluation.

Carry Distance (m)

Maximum repeated carry distance completed safely.

Push Force (N)

Peak acceptable push force in newtons.

Pull Force (N)

Peak acceptable pull force in newtons.

Grip Strength (kg)

Measured grip force converted to kilograms.

Repetition Capacity (tasks/hour)

Sustainable repetitions completed in one hour.

Endurance Duration (minutes)

Continuous productive endurance before stopping criteria.

Postural Tolerance (minutes)

Tolerance for crouching, kneeling, bending, or static postures.

Balance Score (%)

Movement control or stability score from 0 to 100.

Range of Motion Score (%)

Joint mobility score from 0 to 100.

Task Lift Requirement (kg)

Required task lifting load.

Task Carry Requirement (kg)

Required carried load for the job task.

Task Carry Distance (m)

Required distance per carrying cycle.

Task Push Requirement (N)

Required push force of the job.

Task Pull Requirement (N)

Required pull force of the job.

Task Grip Requirement (kg)

Required hand force for tools or handling.

Task Frequency (tasks/hour)

Required hourly task repetition rate.

Shift Duration (hours)

Planned work period evaluated against endurance.

Task Posture Requirement (minutes)

Required posture exposure time per task block.

Clear Form

Example Data Table

Profile	Composite Lift	Carry Capacity	Push / Pull	Grip	Endurance	Task Match	Classification
Sample Evaluation A	26.40 kg	24 kg	210 N / 190 N	38 kg	360 min	108.70%	Fit with monitoring
Sample Evaluation B	18.90 kg	16 kg	145 N / 130 N	26 kg	250 min	78.40%	Modified duty recommended

Formula Used

This calculator converts measured functional outputs into normalized demand ratios, then combines them into a weighted task match index for practical workload planning.

Metric	Formula	Purpose
Composite Lift Capacity	(0.55 × Floor-to-Waist Lift) + (0.45 × Waist-to-Shoulder Lift)	Balances lower and higher lift zones.
Carry Ratio	0.60 × (Carry Capacity ÷ Task Carry Requirement) + 0.40 × (Carry Distance ÷ Task Distance)	Captures both weight and distance demands.
Force Ratio	((Push Force ÷ Task Push Requirement) + (Pull Force ÷ Task Pull Requirement)) ÷ 2	Evaluates horizontal force capability.
Mobility Ratio	((Balance Score ÷ 100) + (ROM Score ÷ 100)) ÷ 2	Combines control and joint mobility.
Overall Task Match Score	100 × Σ(Weight × Clamped Ratio)	Weighted index of task readiness.
Capacity Utilization	10000 ÷ Task Match Score	Shows how heavily current capacity is being used.
Recommended Safe Lift	Composite Lift × Fatigue Factor × Posture Factor × Mobility Factor	Adjusts lifting guidance for endurance, posture, and control.

Ratios are capped at 150% inside the weighted score so unusually strong values do not overpower weaker, job-critical limits.

How to Use This Calculator

Enter measured functional test values for lifting, carrying, force, grip, endurance, posture, balance, and range of motion.
Enter the real task demands for the job, workstation, or return-to-task scenario.
Press Calculate Functional Capacity to generate the result below the header and above the form.
Review the task match score, safety margin, utilization, safe lift recommendation, and limiting factor.
Use the CSV or PDF buttons to export the evaluation for reporting, planning, or documentation.

Frequently Asked Questions

1) What does this calculator estimate?

It estimates how well measured functional capacity matches a defined task. The score blends lifting, force, grip, endurance, posture, repetition, and mobility into one engineering-style readiness index.

2) Why does the score compare against task demands?

Capacity alone is not enough. A worker may test well overall but still miss a critical job demand. Comparing capability to actual task requirements makes the result more practical.

3) Can the task match score go above 100%?

Yes. A score above 100% means measured capacity exceeds the stated task demand. Higher values indicate margin, while values below 100% suggest tighter fit or overload risk.

4) What is capacity utilization?

Capacity utilization estimates how much of available functional output the current task is consuming. Lower utilization usually means more reserve, while higher utilization signals tighter workload tolerance.

5) Why is there a recommended safe lift value?

The recommended lift adjusts raw lifting ability for endurance, posture, and movement control. It gives a more conservative value for planning repeated work or longer shifts.

6) Does this replace a full evaluation report?

No. It is a structured calculator for planning and documentation. A full evaluation still needs test protocols, observations, professional judgment, and job-specific context.

7) Should I use field values or lab values?

Use whichever values best represent the intended work condition. For job matching, field-validated values are often more useful because they reflect actual surfaces, distances, tools, and pace.

8) When should the evaluation be updated?

Update the inputs when the job changes, the workstation is redesigned, shift length changes, or new test measurements are available. Fresh data improves fit decisions.