Free operating capacity tool
Capacity Utilization Calculator
Measure used and unused capacity, then estimate how much spare capacity could produce additional revenue and contribution profit.
Simple calculator
Monthly capacity viewEnter available and used capacity
Capacity
Spare-capacity economics
Simple methodUtilization = used capacity ÷ available capacity. Unused capacity is valued only when utilization is below 100%. Potential contribution assumes spare units can actually be sold at the entered revenue and contribution margin.
Advanced calculator
Downtime + yield + demandSeparate physical capacity from profitable capacity
Physical capacity
Monetizable demand
Planning horizon
Advanced methodEffective good-unit capacity = nameplate capacity × (1 − downtime) × yield. Monetizable capacity is the smaller of physical unused capacity and additional demand. Incremental profit deducts only incremental fill costs, while existing fixed capacity cost is used separately to show cost absorption.
Monthly utilization forecast
Physical capacity held constantCapacity pressure as output changes
| Month | Projected good output | Effective capacity | Utilization | Unused capacity | Over capacity | Target-utilization gap |
|---|
Utilization sensitivity
Price, demand and cost assumptions preservedEconomics at different utilization levels
| Utilization | Used capacity | Unused capacity | Monetizable capacity | Added revenue | Incremental profit |
|---|
Demand sensitivity
Physical capacity held constantValue of spare capacity at different extra-demand levels
| Additional demand | Monetizable capacity | Added revenue | Incremental profit | Profitable units above break-even | Filled utilization |
|---|
Pricing sensitivity
Monetizable volume held constantProfit from filling spare capacity at different discounts
| Fill discount | Realized price | Contribution / unit | Added revenue | Incremental profit | Break-even fill |
|---|
Downtime sensitivity
Current output and yield held constantHow availability changes effective capacity
| Downtime | Effective capacity | Current utilization | Unused capacity | Monetizable capacity | Incremental profit |
|---|
Scope
Unused capacity is not automatically profitable capacity
This calculator separates physical spare capacity from capacity that can realistically be monetized. Additional demand, selling price, variable cost, quality yield, downtime, bottlenecks and incremental operating costs can all limit the value of unused capacity. Existing fixed capacity cost is treated as a cost-absorption metric rather than deducted again from incremental profit. For capital-intensive expansion decisions, also consider maintenance, labor constraints, working capital, service levels and any new fixed costs required above the current capacity envelope.