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Machine Utilisation Calculator

Work out machine utilisation instantly with clear inputs, formula shown and shareable results.

About Machine Utilisation Calculator

Utilisation is running hours over available hours. Splitting idle time into planned downtime (maintenance, scheduled changeover) and unplanned downtime shows whether low utilisation is a maintenance policy or a reliability problem.

Formulas

Utilisation

Utilisation % = Running hours / Available hours x 100

Effective utilisation

Effective % = Running hours / (Available - Planned downtime) x 100

Worked example

With the default values below, Machine Utilisation Calculator returns Machine utilisation of 84.09%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Hours the machine ran
148
Hours the machine was available
176
Planned downtime in the period
12

Results

Machine utilisation
84.09%
Utilisation of unplanned-available time
90.24%
Total idle hours
28.0
Unplanned downtime
16.0

Step by step

  1. 1Values used
  2. 2Utilisation
  3. 3Effective utilisation
  4. 4Machine utilisation= 84.09
  5. 5Utilisation of unplanned-available time= 90.24
  6. 6Total idle hours= 28.0
  7. 7Unplanned downtime= 16.0

Assumptions and limits

  • The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or fees or charges into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Is 100% utilisation the goal?

No. Running a non-bottleneck at full utilisation just builds inventory, and running any asset flat out removes the slack needed to recover from disruption.

How does this relate to OEE?

Utilisation is close to the availability element of OEE. OEE also multiplies in speed loss and quality loss.

Related Calculators

Machine Utilisation Calculator | Calcrivo