This website introduces the EFA Calculator software and provides a facility to download the latest version. For information on the purpose of the software and its functions, please view the About and Support information pages. Some annotated videos are also available, showing the software in action.

The software has been developed by the Agriculture and Environment Research Unit (AERU), at the University of Hertfordshire in the UK, with funding from the European Commission's Joint Research Centre (JRC) , Ispra, Italy (Project Ref: JRC/IPR/2014/H.4/0022/NC).

The EFA Calculator now includes the outputs from the Quantification of Ecological Services for Sustainable Agriculture​(QuESSA) project.  The QUESSA project is funded by the European Union’s Seventh Framework Programme for research, technological development and demonstration, and aimed to quantify the key semi-natural habitats (SNH) providing these essential ecological services (ES) across economically important cropping systems, farming intensities and four European agro-climatic zones. Click here to visit the project website. The revised EFA Calculator includes options to include the QuESSA calculations and results as part of the impact assessment for EFAs and SNHs on the farm.

For further information please contact: aeru@herts.ac.uk