V2.1
MTTR and MTBF Calculator
Turn failure records into reliability KPIs
Failure records pile up in a log, but without a consistent way to calculate MTTR, MTBF, availability and downtime, that data never becomes a usable KPI.
One-time purchase, no subscription. Works in Microsoft Excel or compatible spreadsheet software. Includes an example file, a PDF guide and a single-user license, with support by email.
The MTTR and MTBF Calculator is an Excel workbook that turns a failure log into MTTR, MTBF, availability and downtime KPIs, with a dashboard and failure analysis by mode, equipment and trend.
MTTR is calculated as total repair time divided by the number of failures with a recorded repair time. MTBF is calculated as total operating time divided by the number of failures with a recorded operating time. Availability is calculated as MTBF divided by the sum of MTBF and MTTR.
What is inside
- Failure Log with up to 500 rows
- Data quality check flags on the entered records
- Dashboard with 3 charts
- Failure analysis by failure mode, by equipment, and a 12-month trend
Screenshots
Who it is for
- Maintenance and reliability engineers
- Technicians and supervisors
- Maintenance planners
- Students
What is included
- The MTTR and MTBF Calculator workbook
- An EXAMPLE file
- A PDF guide
- A README file
- A license
Frequently asked questions
How are MTTR and MTBF calculated?
MTTR is total repair time divided by the number of failures with a recorded repair time. MTBF is total operating time divided by the number of failures with a recorded operating time. Availability is MTBF divided by the sum of MTBF and MTTR.
Does it require Microsoft Excel?
Yes. It is an Excel workbook and opens in Microsoft Excel or compatible spreadsheet software.
Is example data included?
Yes. The download includes an EXAMPLE file so you can see how the calculations work before entering your own records.
Is this a subscription?
No. This is a one-time purchase with no recurring fee.