Is this unit converter free to use?

Yes. The InstantQR unit converter is free to use.

Do you store my values or conversions?

No. Conversions run locally in your browser and we do not intentionally store the values you enter.

Yes. Once the page is loaded, it can continue to work offline in most browsers.

Popular conversions include inches to centimeters, pounds to kilograms, Fahrenheit to Celsius, ounces to grams, gallons to liters, and mph to km/h.

Instant conversions for everyday use. Convert length, weight, temperature, volume, and speed. Privacy-first: runs locally in your browser.

⚡ Fast 🔒 Local 📱 Mobile friendly ✅ No signup

Converter

Length

Weight

Temperature

Volume

Speed

Value

Precision

From

Result

—

Popular: in → cm, lbs → kg, °F → °C, oz → g, gal → L, mph → km/h.

Fast + private: conversions happen locally. No form submissions.

Quick presets

Inches → cm

cm → Inches

lbs → kg

kg → lbs

°F → °C

°C → °F

oz → g

gallons → liters

mph → km/h

FAQ

Is this free? Yes.
Do you store values? No.
Does it work offline? Yes once loaded.

Related: Time Zone Converter · World Clock

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