About MaintBench

Free, fast engineering tools for the people who keep plants running.

MaintBench is a small, independent UK-run site of calculators and templates for maintenance, electrical, reliability and plant engineers. The tools are built and checked with hands-on industrial maintenance experience. Every calculator shows its formula, so you can see exactly how the answer was reached.

Found an error, or want a calculator that isn't here? Corrections are taken seriously and fixed quickly.