What it means
Every factory, hotel, airline or call centre has a limit to what it can produce or serve. Capacity utilisation compares what it does produce to that limit.
A hotel with 100 rooms that sells 70 on average has a utilisation rate of 70%. The figure matters because many costs are fixed.
Rent, equipment and core staff must be paid whether the business is busy or quiet. When utilisation is low, those fixed costs are spread over fewer units, so the cost of each unit rises.
At the other extreme, running at very high utilisation brings its own problems. There is no spare capacity for surprise orders, maintenance becomes harder to schedule, and quality can suffer.
Many businesses aim for a high but not total level, such as 80% to 90%, depending on the industry. Economists also use the measure for whole economies.
A high national rate can signal an overheating economy and rising inflation, while a low rate suggests slack. For individual firms, it informs decisions about hiring, investing in new equipment or cutting costs.
Defining capacity needs care. It can mean the theoretical maximum, a practical level that allows for maintenance and breaks, or the normal level a business expects over time.
The choice changes the percentage, so always state which definition is in use. Managers improve utilisation by winning more orders, smoothing demand through off-peak pricing, or reducing capacity by selling or leasing surplus assets.
The right answer depends on whether the shortfall is temporary or permanent.
In practice
Real-world examples
Example 1
A hotel with 200 rooms sells an average of 130 rooms a night. Its occupancy of 65% is low for the season, so the manager launches a midweek discount for business travellers. Occupancy rises and the fixed cost per room sold falls. The manager checks that the discount does not drag down the price paid by regular guests.
Example 2
A car plant has a capacity of 500,000 vehicles a year but builds 350,000. Its utilisation is 70%, so management considers closing one production line. The decision depends on whether demand is expected to recover. Closing a line saves cost but makes it expensive to restart later.
Example 3
A call centre runs at 95% utilisation during the holiday period. Wait times rise and customer complaints increase. The manager hires temporary staff to bring utilisation down to a level that protects service quality.
Think of it
Capacity utilization shows what percentage of your production capability you're actually using.
Formula
Calculation
Capacity utilisation rate = (Actual output / Maximum possible output) x 100
Suppose a bakery can produce 10,000 loaves a week at full capacity, but it produced 8,000 loaves last week.
Utilisation = (8,000 / 10,000) x 100 = 80%.
If the bakery's fixed costs are $20,000 a week, the fixed cost per loaf is 20,000 / 8,000 = $2.50, compared with 20,000 / 10,000 = $2.00 at full capacity.Case study
Seen in the real world
Ironwood Plastics is a fictional manufacturer with three moulding lines. In a weak year its lines ran at an illustrative 55% utilisation, and the unit cost of its products climbed above the selling price of some items. Management first assumed the problem was pricing, but a closer look showed that rent, depreciation and supervisors were being spread across too few units.
The finance team modelled three options: closing one line, bringing in extra contract work, or doing nothing. Closing a line would save $600,000 a year but would reduce capacity needed for a possible recovery. Contract work would raise utilisation to 75% and cover fixed costs.
The company chose to sign a contract with a customer that needed extra production. Utilisation rose, fixed costs per unit fell, and the line stayed available for growth. The finance director set a target range of 75% to 85% for each line and began reporting utilisation monthly, so that any slide towards the bottom of the range would prompt an early conversation about new orders.
Watch out
Common mistakes
- Aiming for 100% utilisation. Some spare capacity is needed for maintenance, surprise orders and quality, and a plant run flat out for long periods tends to suffer breakdowns.
- Using different definitions of capacity in the same report. Theoretical, practical and normal capacity give different percentages.
- Ignoring fixed costs. Low utilisation raises the fixed cost of each unit, which can turn a profit into a loss, even when the selling price has not changed.
Questions
People also ask
What is a good capacity utilisation rate?
It varies by industry, but many firms target a range of roughly 80% to 90%. Industries with steady demand can run higher than those with big seasonal swings.
How does it affect unit cost?
Higher utilisation spreads fixed costs over more units, so the cost per unit falls.
Can it be used for service businesses?
Yes, airlines, hotels, hospitals and consultancies measure it with seats, rooms, beds or billable hours. A consultancy, for example, tracks the share of staff hours billed to clients.
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