Press and media
Last updated: October 5, 2026
billycalc is a free website with thousands of online calculators and unit converters for finance, health, construction, math, physics, units and everyday life. It works in 8 languages and needs no registration. billycalc is an independent project created and maintained by Alex Semensky.
Key facts
- 8 languages: English, Russian, Spanish, Portuguese (Brazil), French, German, Italian and Indonesian. The Russian version has the largest catalog.
- Thousands of calculators and converters.
- Free: no registration, no accounts, no payments and no ads.
- Calculations run directly in the browser; the numbers people enter are not sent to the billycalc server.
- Most calculators explain their formula or method, and many include worked examples with real numbers.
- Most calculators can be embedded on other websites for free as a widget.
- Some health calculators are simplified educational models and carry a visible warning.
- Analytics cookies are set only with the visitor's consent.
Media contact
Write to [email protected] with the subject "Press". We usually reply within a few working days.
Logo and images
| File | What it is | Format and size |
|---|---|---|
| logo.png | Logo, square | PNG, 512×512 px |
| icon-512.png | Site icon (same image as the logo) | PNG, 512×512 px |
| apple-touch-icon.png | Apple touch icon | PNG, 180×180 px |
| og-default.png | Social media card | PNG, 1200×630 px |
Using the name and logo
- Write the name as billycalc: one word, lowercase, even at the start of a sentence.
- Do not alter the logo: do not recolour, stretch or crop it, add effects or combine it with other marks.
- Do not use the name or logo in a way that suggests billycalc endorses you, your product or your publication.
- When you cite results, link to the calculator page and present them as estimates, not as official figures or professional advice. Short quotations with attribution and a link are welcome (see the Terms of Use).
More about the project: About billycalc.
See also: About · Contact · Terms of Use