Terms of Service
The rules for using this site, in plain language.
Using the Site
The calculator and the tools are free to use for schoolwork, teaching, or anything else lawful. There is no account to breach and no quota to exceed. What is not welcome: automated scraping at a rate that degrades the site for others, and any attempt to use it to distribute malware.
Check Anything That Matters
The calculator is accurate to the limits of ordinary floating-point arithmetic, which means very long or extreme expressions can carry small rounding differences. Verify any figure that carries real consequences, whether medical, financial, structural or legal, before relying on it.
Code and Content
The code and writing on this site belong to the project and can be read in full in the public repository. Reuse the code under its licence; do not republish the written pages as your own.
No Warranty
This is provided as is. It may be unavailable at times and GitHub Pages may have an outage. To the extent the law allows, no liability is accepted for indirect or consequential loss arising from use of the site.
Updates
These terms may change. Because the site is version controlled, every revision is visible in the commit history rather than replaced silently.