Check whether two instruments or observers are interchangeable: bias with 95% CI, limits of agreement, proportional bias and a downloadable PNG plot.
If you use it in your thesis or in a paper, cite it so that readers of your Methods section know how the calculation was done.
Ciudad-Fernández, V. (2026). Bland-Altman calculator [Web application]. Ciudad Science. Retrieved October 14, 2026, from https://analisisdedatospsicologia.com/en/tools/bland-altman-calculator
For your Methods section: Agreement between the two measurement methods was assessed with the mean bias and the 95% limits of agreement of Bland and Altman (1986, 1999), computed with the Ciudad Science Bland-Altman calculator (Ciudad-Fernández, 2026).
@misc{ciudadfernandez2026blandaltman,
author = {Ciudad-Fern{\'a}ndez, V{\'i}ctor},
title = {{Bland-Altman calculator}},
year = {2026},
publisher = {Ciudad Science},
howpublished = {Web application},
url = {https://analisisdedatospsicologia.com/en/tools/bland-altman-calculator},
urldate = {2026-10-14},
note = {Accessed 2026-10-14},
}