What is OEE and OEE calculations?

What is OEE and OEE calculations?

OEE (Overall Equipment Effectiveness) measures manufacturing productivity, expressed as a percentage of the production time that is truly productive. OEE calculations are the most frequently used measurements of efficiency and can be used for a single machine, a production cell, a production line, or for the entire plant.

How can you utilize OEE measurement?

With OEE, the truly productive time of a production facility or a machine can be compared with the planned production time. Planned production time is the total time available for production minus planned stops. OEE measurements are an effective way of achieving continuous improvements in the production.

OEE offers management a percentage measurement of the ratio of actual production and planned production – in other words, a clear picture of waste caused by availability loss, performance loss and quality loss. The ability to react immediately when deviations occur is becoming an increasingly important parameter in terms of competitors.  

How high should your OEE score be?

An OEE score of 100% is considered a perfect production, which means that you are manufacturing only good parts, as fast as possible and with no stop time. In practice, an OEE of 85% is considered world class production. An OEE score of 60% or 40% is not uncommon, but such values indicate that there is room for significant improvement of processes.

“We’ve got a software-based production facility which fully supports our changing demands and requests. Earlier, we’d have to adjust every single machine. REEFTvisual is innovative and flexible – now we can add new buttons and functions directly on the screen, check and adjust the takt as well as start and stop each production line.”

Rikard Karlsson, Technical Manager at Electrolux


OEE can aid in revealing shortcomings and possible productivity improvements such as:

  • Unplanned downtime
  • Poor utilisation of the production plant
  • Registration and classification of downtime
  • Connection between production equipment and production effectivity

Production reporting – a visual presentation of production data

Everyone in the company has access to your production monitoring – it is a common tool of analysis that will allow you to see what is going on in production and make decisions based on reliable data. Your production data is collected and analysed – and presented in easy-to-read tables and charts.

Claus Ransborg - 1024x576
Claus Ransborg
Product Manager REEFTVisual

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