Get the software
Fast and powerful modeling
Click the buttons below to download RefFIT, the manual and the tutorials
After running RefFIT for the first time, you can use it for 30 days, after which we ask you to help improve RefFIT by filling in a short questionnaire on the website. Then we will give you a new license so you can keep enjoying the great stuff!
If you use RefFIT for your data analysis, please indicate in your published work by citing:
“Kramers-Kronig constrained variational analysis of optical data”, A. B. Kuzmenko, Review of Scientific Instruments 76, 083108 (2005).