Free tool
Changeover Loss Calculator
Calculate the annual value of reducing your changeover time toward a SMED target.
Current changeover time
Production value
Result: changeover loss calculation
Want to reduce changeover time and loss?
Request a production line optimizationHow the calculation works
The calculation is based on SMED logic: minutes saved = current − target time; annual hours saved = minutes ÷ 60 × changeovers per week × weeks per year; annual value = hours × loss per hour. You also see the current and target loss per year.
Example: 10 changeovers a week, 45 min now, 20 min target, EUR 300/h and 48 weeks give 25 min saved per changeover, 200 h a year and a saving of EUR 60,000; the current loss is EUR 108,000 a year.
Frequently asked questions
What is SMED?
A method for shortening changeover time by separating the work that can be done while the machine is running.
How much time is realistic to save?
It depends on the machine and process. Set a target time your team can assess.
How can I speed up changeovers?
Standardise the work, prepare tools in advance and use quick-release fixings.
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Methodology and limitations
Methodology based on standard industry calculations and Maintest’s practical industrial experience. This tool provides a planning estimate and does not replace project-specific engineering assessment. This tool is a screening and planning aid developed by Maintest. Results are indicative and depend entirely on the figures and answers you enter. They are not an engineering calculation, a safety assessment or a substitute for the manufacturer’s instructions, applicable standards or professional judgement. Weights, benchmarks and default values are Maintest planning assumptions and can be adjusted to your situation. Do not use this tool as the only basis for safety-critical decisions such as lifting, electrical work or lockout procedures.
Tool version 1.0 · Updated October 2026
Related project: Production line relocation from Helsinki to Jüri
Want to reduce changeover time and loss?
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