Maintenance metric calculators
10 free calculators for reliability, uptime and maintenance planning. Enter your numbers and get the result straight away — no signup, no spreadsheet.
Reliability
How often machines fail, and how fast you get them back.
MTBF Calculator
Mean Time Between Failures
How long an asset runs, on average, between unplanned breakdowns.
Open calculatorMTTR Calculator
Mean Time To Repair
How long it takes to restore an asset to production after it fails.
Open calculatorMTTF Calculator
Mean Time To Failure
Expected service life of a non-repairable component before replacement.
Open calculatorUptime and downtime
How much of the planned time you actually produced, and what the lost time cost.
OEE Calculator
Overall Equipment Effectiveness
The share of planned time spent making good parts at full speed.
Open calculatorAvailability Calculator
Machine Availability
The share of planned production time an asset actually ran.
Open calculatorDowntime % Calculator
Downtime Percentage
The share of a period an asset was down.
Open calculatorDowntime Cost Calculator
Cost of Downtime
What the lost hours cost in missed output and idle labour.
Open calculatorMaintenance planning
Whether planned work is getting done, and done on time.
PM Compliance Calculator
Preventive Maintenance Compliance
The share of scheduled preventive maintenance done on time.
Open calculatorSchedule Compliance Calculator
Maintenance Schedule Compliance
The share of scheduled work orders finished as scheduled.
Open calculatorPMP Calculator
Planned Maintenance Percentage
How much maintenance time is planned rather than reactive.
Open calculatorGet started
Stop calculating these by hand every month
MachDatum CMMS calculates MTBF, MTTR, downtime and PM compliance for you, per asset, so the numbers are ready when you need them.