How do I convert centimetres to inches?

Select Length as the category, choose centimetres as the input unit and inches as the output. Enter your value and the converter instantly shows the result. 1 cm equals 0.3937 inches.

Can I convert Celsius to Fahrenheit online?

Yes. Choose Temperature as the category, select Celsius as source and Fahrenheit as target. The formula is (°C × 9/5) + 32. Our converter handles this automatically.

Does this unit converter work on mobile?

Yes, the unit converter is fully responsive and works on all smartphones, tablets, and desktop browsers with no app download needed.

Free Unit Converter - Length, Weight, Temperature & Volume Conversion Tool

Convert between metric and imperial units instantly. Our free online unit converter covers length, weight, temperature, and volume with accurate conversions for everyday and professional use.

Comprehensive Free Unit Converter

Our free online unit converter makes it easy to switch between measurement systems — from metric to imperial and back. Whether you need to convert centimeters to inches for a DIY project, kilograms to pounds for a recipe, or Celsius to Fahrenheit for weather, our tool gives you instant, accurate answers.

The converter is designed for students, engineers, cooks, travellers, and anyone who regularly works across different unit systems. No formulas to memorise — just enter a value and get your result in seconds.

Supported Unit Categories

Length Conversions

Convert between meters, kilometers, centimeters, millimeters, miles, yards, feet, and inches. Perfect for architecture, construction, travel distances, and everyday measurements.

Unit	Equivalent in Meters
1 kilometer	1,000 m
1 mile	1,609.344 m
1 yard	0.9144 m
1 foot	0.3048 m
1 inch	0.0254 m

Weight Conversions

Convert kilograms, grams, milligrams, pounds, ounces, and tonnes. Ideal for cooking, fitness tracking, shipping, and scientific applications.

Temperature Conversions

Switch between Celsius (°C), Fahrenheit (°F), and Kelvin (K). Essential for cooking, meteorology, chemistry, and international travel.

Water boils at 100°C = 212°F = 373.15 K
Normal body temperature: 37°C = 98.6°F
Absolute zero: 0 K = -273.15°C = -459.67°F

Volume Conversions

Convert litres, millilitres, cubic meters, gallons, fluid ounces, cups, pints, and quarts. Perfect for cooking, chemistry, fuel measurements, and industrial applications.

Metric vs. Imperial Units

The world uses two main measurement systems. The metric system (SI system) is used by most countries and is based on powers of ten, making calculations straightforward. The imperial system is used primarily in the United States and United Kingdom for everyday measurements.

Our unit converter bridges both systems effortlessly, so you never have to memorise conversion formulas. Simply select your units and let the tool do the mathematics.

Frequently Asked Questions

How accurate are the conversions?

All conversions use exact or internationally agreed conversion factors (e.g., 1 inch = 2.54 cm exactly). Results are accurate to multiple decimal places.

Can I convert between non-metric and non-imperial units?

Yes — you can convert between any pair of supported units within the same category. For example, miles to kilometres, pounds to kilograms, or Fahrenheit to Kelvin.

Is the unit converter free?

Completely free with no registration needed. Access all unit categories without any limitations.