---
title: "MTBF MTTR Calculator and CMMS ROI Calculator — FixAhead"
description: "Free MTBF, MTTR, and CMMS ROI calculators. Work out each figure from your own numbers, by standard formulas."
---

# Maintenance calculators

Enter your own figures and get the number you decide on, worked out by a standard formula.

- ## MTBF Calculator

  Work out mean time between failures for one asset from its scheduled hours, unplanned downtime, and failures. [Open the calculator](/tools/mtbf/)
- ## MTTR Calculator

  Work out mean time to restoration for one asset from its failures and the hours each took to get back in service. [Open the calculator](/tools/mttr/)
- ## CMMS ROI Calculator

  Estimate year-one net savings, ROI, and simple payback for a maintenance software purchase, from your own costs and savings. [Open the calculator](/tools/roi/)