Precision unit conversion — free, fast, no sign-up required.
US and Imperial measures share names but differ in size — a UK pint is about 20% larger than a US pint. Pick the right group above, or see our guide to US vs Imperial measures.
UnitSwap is a precision unit conversion tool built for speed and accuracy. Whether you're converting Celsius to Fahrenheit for a recipe, meters to miles for a run, or pounds to kilograms at the gym — UnitSwap handles it in your browser, instantly, with no sign-up required.
All calculations happen locally. Your data never leaves your device.
Last updated: July 2026
UnitSwap ("we", "us", "our") operates this website. All unit conversions run entirely in your browser — no input values, results, or usage data related to your conversions are ever sent to our servers.
Data stored locally: Your theme preference (dark/light) is stored in your browser's localStorage. Nothing else is stored, and it never leaves your device.
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Questions about this policy? Contact privacy@unitportal.net.
By using UnitSwap, you agree to these terms. UnitSwap is provided "as is" for informational and convenience purposes. While we strive for accuracy in all conversion formulas, we make no guarantee of absolute precision and are not liable for decisions made based on results shown here — always verify critical conversions (medical, engineering, financial) independently.
Acceptable use: Don't attempt to scrape, reverse-engineer, or resell UnitSwap's conversion tools without permission. Automated bulk requests that degrade service performance for other users are not permitted.
We may update these terms periodically. Continued use of the site after changes constitutes acceptance of the revised terms.
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UnitSwap reaches users actively looking to convert units for cooking, fitness, travel, engineering, and everyday tasks. For direct advertising or sponsorship inquiries outside of our standard AdSense placements, contact hello@unitportal.net.