Unit converters that show the exact factor, not a rounded guess
Everyday converters for height, weight, area, temperature, fuel and distance — each with the exact factor, a worked example and a table of common values.
All Unit Converters calculators
Type a height or length in centimetres and get it in decimal feet, feet + inches and metres — with the exact…
Open calculatorEnter feet and inches separately and get the height in centimetres and metres — combined first, so the answer is…
Open calculatorEnter a weight in kilograms and get pounds, pounds + ounces and total ounces — with the exact factor and the…
Open calculatorTurn inches into centimetres and millimetres — useful for TV sizes, photo frames, fittings and any import spec…
Open calculatorEnter an area in square feet and get square metres, square yards (gaj) and acres — the units Indian property…
Open calculatorType a temperature in °C and get °F and Kelvin — with the formula written out and a chart of the temperatures…
Open calculatorEnter litres and pick the gallon you mean — US or imperial — and get the figure in both, plus millilitres.
Open calculatorEnter kilometres and get miles, feet and nautical miles — with running distances and road-speed conversions…
Open calculatorTurn centimetres into inches — for waist and chest sizes, screen and frame dimensions, and any product listing…
Open calculatorWhat this vertical covers
Unit conversion is arithmetic, not opinion: an inch is exactly 2.54 cm, a pound is exactly 0.45359237 kg, and a square foot is exactly 0.09290304 square metres. These pages show the factor and the method instead of asking you to trust a black box.
The converters cover the queries Indian users actually type — height in cm and feet, body weight in kg and lb, plot area in sq ft and sq m, oven and weather temperatures, fuel in litres and gallons, and road distances in kilometres and miles. Where two units share a name but not a size, such as the US and imperial gallon, the page makes you choose.
Worth knowing before you calculate
These are definitions, not measurements
The international inch, pound and mile were fixed by agreement, so their conversion factors are exact. The decimal places you see in a result come from display rounding, not from uncertainty in the factor.
cm to feet and feet to cm are separate pages
The two directions are reciprocal, not identical: one page starts from a form value in centimetres, the other from a tape measure in feet and inches. Each has its own table and worked example.
India trades in metric, but the old units survive
Indian law requires metric units for trade, so fuel is sold in litres and plots are registered in square metres. Feet, inches and gaj remain in conversation and property advertising, which is why both sides of each conversion are useful.
Unit Converters — frequently asked questions
Are these unit conversions exact?+
Why are cm to feet and feet to cm on separate pages?+
Which gallon does the litres to gallons page use?+
Do the converters send my numbers anywhere?+
How can I convert units without a calculator?+
Which converters are best for property measurements?+
Every calculator, dated and sourced.
Each calculator on this page is generated from one verified record: its inputs, formula, tests, sources and the date the numbers were checked. When an official rate changes, the record changes and the page is rebuilt with a new verified date.
Sources for this vertical
This hub
- Last verified: 29 October 2026
- Calculators live: 9
- Read the methodology
How we handle errors
- Spotted a mistake? Report it — we correct and log it.
- Each page keeps its own changelog.
- See the disclaimer.