Part of the HR metrics hub — the analytics layer of the hiring funnel. It connects to employer operations for planning and to the staffing layer when you need to bridge a gap.
What it measures
Capacity metrics express available capacity (people and their working hours) against required capacity (the demand on them). A common summary is a utilisation rate — required hours as a share of available hours — but capacity is also read as headroom, coverage and concentration of load.
They are planning metrics: most useful looking forward, not only as a record of the past.
Why it matters
Capacity links directly to delivery, burnout risk and hiring timing. Persistently above-capacity teams tend to lose people; persistently under-capacity teams carry cost without output.
It informs when to hire, where to rebalance and whether to outsource a peak rather than staff for it permanently.
Formula
Utilisation = (Required hours ÷ Available hours) × 100
Use realistic available hours (allowing for leave, meetings and non-project time), not a theoretical maximum, or utilisation will look artificially low.
Worked example: If planned work needs 760 hours and the team can realistically supply 800, utilisation is (760 ÷ 800) × 100 = 95% for the period.
Inputs you need
- Realistic available hours for the team
- Required hours from the planned work
- Allowances for leave, admin and non-delivery time
- A consistent period and definition of "available"
How to read it
Sustained utilisation near or above 100% leaves no slack for variation and is a burnout and delivery-risk signal, not a sign of efficiency. Some headroom is healthy. Read utilisation with how load is distributed, not just the average.
Because it is forward-looking, pair capacity metrics with hiring forecasting and capacity planning to act before the strain shows up in turnover.
Common mistakes
- Using theoretical maximum hours instead of realistic available hours.
- Treating 100% utilisation as the goal.
- Averaging away uneven load between people or teams.
- Reading capacity only backwards instead of for planning.
Operational considerations
- Base available hours on realistic conditions, not an ideal week.
- Keep deliberate headroom for variation and growth.
- Look at distribution of load, not just the average rate.
- Feed capacity signals into hiring timing and outsource-vs-hire decisions.
Use this metric inside the operating cadence: plan with workforce planning and headcount planning, anticipate demand with hiring forecasting, and check it against workforce capacity planning.
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