The text, images, and other content on this website (excluding Font Awesome, which is released under its own license) may be reused under the terms of a Creative Commons Attribution 4.0 International (CC BY 4.0) license: this means that you can reuse any of the content as long as you attribute machin-like.org. For reuse on a website, you could attribute us by including a link to machin-like.org; for reuse in print, you could attribute us by including "machin-like.org" somewhere near the image or information; for reuse in a paper, you could cite machin-like.org.
The code used to generate this website is available on GitHub under an MIT license.
On each of the Machin-like formula pages, you can find citations for the formula. These should be cited when using a given formula. If you wish to cite this website, you can use the following BibTeX:
@misc{machin-like.org,
AUTHOR = {Scroggs, Matthew W.
and Steckles, Katie},
TITLE = {Machin-like formulae},
YEAR = {{2025}},
HOWPUBLISHED = {\url{https://machin-like.org}},
NOTE = {[Online; accessed 06-October-2025]}
}
This will create a reference along the lines of: