Terms of service

The short, no-jargon terms for using unitbox.

Use of the site

unitbox is free to use, no account required. Use it for any lawful purpose — personal, commercial, educational, or research.

Accuracy

Conversions are computed from standard SI factors and well-documented reference values. For life-critical use (medicine, aviation, engineering), verify against a primary source.

Licence

The site code is open source under the MIT licence. The conversion tables and article content are released under CC BY 4.0 — use freely with attribution.

No warranty

unitbox is provided "as is" without warranty of any kind. We do our best to keep conversions accurate but cannot guarantee zero bugs.

Frequently Asked Questions

Do I need an account?

No. unitbox is fully open — no login, no signup, no email.

Can I use unitbox commercially?

Yes. MIT (code) + CC BY 4.0 (content) — use freely with attribution.

Can I trust conversions for medical / aviation use?

For life-critical use, always verify against a primary source. Our factors come from NIST and BIPM but bugs happen.