Universal Unit Converter
Convert between Metric and Imperial units instantly.
Supports Length, Weight, Temperature, Volume, Area, Speed, and more.
Unit Converter
Available Conversions:
- Length: meters, kilometers, centimeters, millimeters, inches, feet, yards, miles
- Temperature: Celsius, Fahrenheit, Kelvin
- Area: square meters, square kilometers, square feet, square miles, acres, hectares
- Volume: liters, milliliters, gallons, fluid ounces, cups, cubic meters
- Mass: kilograms, grams, milligrams, pounds, ounces, tons
- Speed: meters per second, kilometers per hour, miles per hour
Common Conversions
📏 Length
- Meters ↔ Feet 1m ≈ 3.28ft
- Kilometers ↔ Miles 1km ≈ 0.62mi
- Inches ↔ CM 1in = 2.54cm
⚖️ Weight
- Kg ↔ Pounds 1kg ≈ 2.20lbs
- Grams ↔ Ounces 1g ≈ 0.035oz
- Stone ↔ Pounds 1st = 14lbs
🌡️ Temperature
- Celsius ↔ Fahr. 0°C = 32°F
- Boiling Point 100°C = 212°F
- Human Body 37°C ≈ 98.6°F
🥤 Volume
- Liters ↔ Gallons 1L ≈ 0.26gal
- Cups ↔ ML 1cup ≈ 237ml
- Tbsp ↔ ML 1tbsp ≈ 15ml
📐 Area
- Sq Ft ↔ Sq M 100ft² ≈ 9.29m²
- Acres ↔ Hectares 1ac ≈ 0.40ha
- Sq Km ↔ Sq Mi 1km² ≈ 0.38mi²
🚗 Speed
- MPH ↔ KM/H 60mph ≈ 96.5km/h
- Knots ↔ KM/H 1kn ≈ 1.85km/h
- Mach 1 ~1235 km/h
Real World Applications
Cooking
Convert cups to milliliters or Fahrenheit to Celsius for international recipes.
Travel
Understand speed limits (km/h vs mph) and distances while driving abroad.
Science
Easily switch between Lab measurements (Metric) and US standard units.
Construction
Convert architectural blueprint area measurements from Acres to Sq Ft or Meters.
Unit Conversion in Code
Simple functions to perform unit conversions in your applications.
const cToF = (celsius) => (celsius * 9/5) + 32;
const fToC = (fahrenheit) => (fahrenheit - 32) * 5/9;
console.log(cToF(20)); // 68
console.log(fToC(68)); // 20def miles_to_km(miles):
return miles * 1.60934
def kg_to_lbs(kg):
return kg * 2.20462
print(f"5km is {miles_to_km(5):.2f} miles")Frequently Asked Questions
How accurate are these conversions?
We use standard high-precision conversion factors (up to 12 decimal places). It is more than accurate enough for engineering, construction, and daily usage.
Why are there two different "Ounces"?
"Ounce" (oz) measures weight, while "Fluid Ounce" (fl oz) measures volume. They are not the same. 8 fl oz of water weighs roughly 8 oz, but honey would weigh more.
What is the difference between US Gallons and UK Gallons?
A US Gallon is approx 3.785 liters. A UK (Imperial) Gallon is approx 4.546 liters. Be careful when converting gas mileage or recipes!
Do you strictly follow SI units?
Yes, our tool defaults to standard SI (International System of Units) definitions for metric conversions.