FizzyTools Unit converter uses these open-source components and public data. Thank you to their authors.

- Svelte (MIT)                          https://github.com/sveltejs/svelte
- DM Sans (SIL Open Font License 1.1)   https://github.com/googlefonts/dm-fonts            fonts/OFL-DMSans.txt
- Bricolage Grotesque (SIL OFL 1.1)     https://github.com/ateliertriay/bricolage           fonts/OFL-BricolageGrotesque.txt

Ingredient weights: U.S. Department of Agriculture, Agricultural Research Service. FoodData Central: SR Legacy (April 2018).
fdc.nal.usda.gov. Public domain (CC0 1.0 Universal). Each ingredient keeps its FDC ID.

Unit definitions: NIST SP 811 (2008), NIST Handbook 44 (2026) Appendix C, the SI Brochure (9th edition, 2019), IAU, 21 CFR 101.9.
The arithmetic (exact fractions), unit data, question reader and share links are FizzyTools' own code.