100% private. Every conversion runs in your browser — nothing is uploaded, stored, or sent anywhere.
Calculators
Convert units instantly
Pick a category, enter an amount, and convert between metric and imperial units.
Result
Converted value
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- Result
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Questions people ask
Which conversions are supported?
Length (millimeters to miles), weight (grams to pounds) and temperature (Celsius, Fahrenheit, Kelvin). More categories can be added over time.
How accurate are the conversions?
Conversions use exact internationally defined factors (e.g. 1 inch = 2.54 cm) and temperature formulas. Results are planning-grade, not for legal metrology.
Is my input sent anywhere?
No. All conversion math runs locally in your browser. Nothing is uploaded or stored.