##### Asked by: Saturia Shaldenkov

asked in category: General Last Updated: 18th April, 2020# Is MTTF the same as MTBF?

**MTBF**should be used only in reference to a repairable item, while

**MTTF**should be used for non-repairable items. However,

**MTBF**is commonly used for both repairable and non-repairable items.

Consequently, what is MTTR MTTF and MTBF?

“Mean time between failures” or “**MTBF**” refers to the amount of time that elapses between one failure and the next. Mathematically, this is the sum of **MTTF** and **MTTR**, the total time required for a device to fail and that failure to be repaired.

Additionally, what does MTBF mean? mean time between failures

Also know, what is MTTF formula?

**MTTF** is calculated as the total hours of operation, divided by the total number of items being tracked. **MTTF** in this instance would be (8 + 10 + 12) / 3 = 10 hours.

How do you calculate mean time between failures?

The **MTBF** is **calculated** by taking the total **time** a piece of equipment is running (i.e. uptime) and dividing it by the number of breakdowns that occurred over the same period.