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Online Unit Converter: Length, Weight, Temperature…

Instantly convert between units of length (m, km, miles, feet), weight (kg, pounds), temperature (°C, °F), area, volume, speed, digital storage and time. Every equivalent is shown at once.

How does it work?

  1. Type or paste your data.
  2. The result appears instantly.
  3. Copy or download the result.

Why use Unit Converter?

  • ✓ 100% free, no limits, no watermark
  • ✓ No sign-up, no install
  • 🔒 Files processed locally: full privacy
  • 📱 Works on desktop, tablet and mobile

Frequently asked questions

How do I convert °F to °C?

Subtract 32, then multiply by 5/9. For example, 100 °F = 37.8 °C.

How many kilometers in a mile?

One mile is exactly 1.609344 km.

Are conversions accurate?

Yes, they use official International System factors.

Which categories are available?

Length, weight, temperature, area, volume, speed, data and time.

Is this tool really free?

Yes, 100% free, with no sign-up, no watermark and no usage limit.

Are my files safe?

Yes. Processing happens directly in your browser: your files are never uploaded to a server or stored.

When to use it

The unit converter covers everyday needs: recipes in cups or ounces, height in feet, temperature in Fahrenheit, apartment size in square feet, speed in knots or file size in MB and GB.

Our tips

  • 💡 1 inch = 2.54 cm; 1 foot = 30.48 cm; 1 pound = 453.6 g.
  • 💡 In cooking, a US cup is about 240 ml.
  • 💡 In computing, 1 GB = 1,000 MB (or 1,024 MiB in binary).