Convert Any Unit Instantly – Length, Weight, Temperature, Speed & More
Easily convert units online across eight major categories. Our free unit converter handles length, weight, temperature, speed, digital storage, volume, area, and time. Results are accurate and instant. No signup is needed.
Our unit converter ensures compatibility with South African measurement standards. Use the tool for personal, academic, or professional tasks. Accuracy is guaranteed.
📖 The Complete Free Unit Converter
All Units Converter gives you instant, accurate conversions across 8 measurement categories and over 80 unit types. Whether you need to convert meters to miles, kilograms to pounds, celsius to fahrenheit, or megabytes to gigabytes — everything is here.
How Unit Conversion Works
Every unit is stored with its exact factor relative to an SI base unit. Converting A → B multiplies your input by A’s factor divided by B’s factor — computed to 10 significant figures. Temperature is the only exception, using offset formulas that are applied automatically.
Metric (SI) vs. Imperial Units
The International System (SI) uses meters, kilograms, liters and seconds. The US customary and Imperial systems use miles, pounds, gallons and Fahrenheit.
Digital Storage (Binary Prefixes)
Uses binary prefixes (1 KB = 1,024 bytes):
- 1 KB = 1,024 bytes · 1 MB = 1,048,576 bytes
- 1 GB = 1,073,741,824 bytes · 1 TB = 1,099,511,627,776 bytes
Explore 8 Categories of Our Unit Converter
- Length & Distance: Convert meters, kilometers, miles, and inches.
- Area: Switch between square meters, acres, and hectares.
- Volume: Convert liters, gallons, and milliliters.
- Weight & Mass: Convert kilograms, pounds, and grams.
- Temperature: Celsius, Fahrenheit, and Kelvin conversions.
- Speed: Convert km/h, mph, and m/s.
- Time: Seconds, minutes, hours, and days.
- Digital Storage: MB, GB, and TB conversions.
How to Convert Units Instantly
- Enter your value in the input box.
- Select the units to convert from and to.
- View results instantly.
- Optional: Copy results with one click.
Tip: Common conversions include Meters → Miles, Kilograms → Pounds, and Celsius → Fahrenheit.
Most Used Conversions
| Category | Popular Conversions |
|---|---|
| Length | Meters → Miles, Kilometers → Miles |
| Weight | Kilograms → Pounds, Pounds → Kilograms |
| Volume | Liters → Gallons |
| Temperature | °C → °F |
| Digital Storage | MB → GB |
Unit Conversion Formulas
Length
- Meters to Miles: mi = m × 0.00062137119
- Kilometers to Miles: mi = km × 0.621371
- Inches to Centimeters: cm = in × 2.54
Weight & Mass
- Kilograms to Pounds: lb = kg × 2.20462
- Pounds to Kilograms: kg = lb × 0.453592
Temperature
- Celsius to Fahrenheit: °F = (°C × 9/5) + 32
- Fahrenheit to Celsius: °C = (°F − 32) × 5/9
Digital Storage
- MB to GB: GB = MB ÷ 1024 (binary) or ÷ 1000 (decimal)
- TB to GB: GB = TB × 1024
Quick Examples
Kilometers to Miles: 10 km × 0.621371 ≈ 6.21 miles
Pounds to Kilograms: 50 lb × 0.453592 ≈ 22.68 kg
Celsius to Fahrenheit: 25°C → 77°F
Metric Tons vs US Tons
- Metric ton = 1000 kg
- US ton = 2000 lb ≈ 907.18 kg
- UK ton = 2240 lb ≈ 1016 kg
Unit Conversion Tips
- Use metric units for easier calculations.
- Include imperial units for global understanding.
- Use real-world examples like cooking and travel.
- Double-check critical measurements.
Tips, formulas and conversion guides for everyday use.