Convert length (km↔miles), weight (kg↔lbs), and temperature (°C↔°F) instantly. 20+ units, no signup, fully private.
This unit converter handles length, weight, and temperature conversions instantly in your browser. No formula lookup needed — select a category, enter your value, choose your units, and the result appears immediately. Use the swap button to reverse the conversion direction without re-entering your number.
Choose Length (e.g. miles to kilometers), Weight (e.g. pounds to kilograms), or Temperature (e.g. Celsius to Fahrenheit) using the buttons at the top. The unit dropdowns update automatically to show the relevant units for that category.
Type the number you want to convert into the From field, then select your source unit and target unit from the dropdowns. The conversion result updates immediately as you type — no need to press a button.
Your converted value appears below in large text. Click the ⇄ swap button to instantly reverse the direction — e.g. switch from "miles to km" to "km to miles" with one click, keeping your number in place.
1 meter = 3.28084 feet | 1 kilometer = 0.621371 miles | 1 centimeter = 0.393701 inches | 1 inch = 2.54 cm | 1 foot = 30.48 cm | 1 mile = 1.609 km.
1 kilogram = 2.20462 pounds | 1 pound = 0.453592 kg | 1 stone = 6.35029 kg = 14 lbs | 1 ounce = 28.3495 grams | 1 metric ton = 1,000 kg = 2,204.62 lbs.
Water freezes: 0°C = 32°F | Body temp: 37°C = 98.6°F | Room temp: 20°C = 68°F | Water boils: 100°C = 212°F | Formula: °F = (°C × 9/5) + 32 | Kelvin = °C + 273.15.
Converting units comes up in cooking recipes (US cups to grams), travel and navigation (miles vs. kilometers), medical and fitness contexts (lbs to kg for dosing or BMI), international shopping (clothing sizes, screen sizes in inches vs. cm), and engineering or science work that crosses metric and imperial standards.
1 mile = 1.609344 kilometers. Conversely, 1 kilometer = 0.621371 miles. Select Length → Mile → Kilometer and enter 1 to verify instantly.
1 pound = 0.453592 kilograms. 1 kilogram = 2.20462 pounds. Select Weight → Pound → Kilogram and enter your value for an instant result.
Formula: °F = (°C × 9/5) + 32. So 0°C = 32°F, 37°C (body temp) = 98.6°F, 100°C = 212°F. Use the Temperature tab for instant conversions.
Formula: °C = (°F − 32) × 5/9. So 32°F = 0°C, 98.6°F = 37°C. Select Temperature → Fahrenheit → Celsius for instant conversion.
1 meter = 3.28084 feet. 1 foot = 0.3048 meters. Select Length → Meter → Foot and enter your value.
1 kilogram = 35.274 ounces. 1 ounce = 0.0283495 kilograms. Use the Weight tab with Kilogram → Ounce.
No. All conversions run locally in your browser. Nothing is transmitted to any server.