Unit Converter

Common Unit Conversions

Unit conversion is an essential skill used in science, engineering, cooking, travel and everyday life. This tool supports five major categories: Length, Weight, Temperature, Area and Volume. All conversion factors used are fixed international standards that never change.

Metric vs Imperial System

The metric system (used in India and most countries worldwide) uses units like metres, kilograms and litres, based on powers of 10 for easy conversion. The imperial system (used in the United States and a few other countries) uses units like feet, pounds and gallons. This converter supports both systems so you can switch between them effortlessly.

Temperature Conversion Formulas

Temperature is one of the most commonly converted measurements. The three main scales are Celsius (used in most countries), Fahrenheit (used in the US) and Kelvin (used in science). The formulas are:

Celsius to Fahrenheit: F = C x 9/5 + 32

Fahrenheit to Celsius: C = (F - 32) x 5/9

Celsius to Kelvin: K = C + 273.15

Kelvin to Celsius: C = K - 273.15

Key reference points: Water freezes at 0 degrees C (32 degrees F, 273.15 K) and boils at 100 degrees C (212 degrees F, 373.15 K). Normal body temperature is approximately 37 degrees C (98.6 degrees F).

Frequently Asked Questions

How many centimetres are in an inch?

One inch equals exactly 2.54 centimetres. This is an internationally agreed standard. So 1 foot (12 inches) equals 30.48 cm, and 1 metre equals approximately 39.37 inches.

How many grams are in a pound?

One pound equals approximately 453.592 grams. Conversely, 1 kilogram equals approximately 2.20462 pounds. One ounce equals approximately 28.3495 grams.

What is the difference between a hectare and an acre?

A hectare is a metric unit equal to 10,000 square metres (100m x 100m). An acre is an imperial unit equal to approximately 4,046.86 square metres. Therefore, 1 hectare is approximately 2.471 acres.