Unit Converter
Seven categories of everyday conversions, including the land units people actually search for: acre, cent, ground and hectare.
How the conversions work
Every unit in a category is defined by its exact ratio to a base unit (the metre, the kilogram, the litre), using the internationally agreed definitions: one inch is exactly 25.4 mm, one pound exactly 0.45359237 kg, one US gallon exactly 3.785411784 litres. Converting is then a single multiplication and division, so results are exact to the precision shown rather than rounded lookup-table values.
Indian land units: acre, cent, ground, hectare
Land measurements cause the most real-world confusion. One acre is 100 cents, and one cent is 435.6 square feet, the unit used across Tamil Nadu and Kerala property listings. A ground, common in Chennai real estate, is 2,400 square feet. One hectare is 2.471 acres. So a "10 cent plot" is 4,356 sq ft, and a "2 ground plot" is 4,800 sq ft; this converter moves between all of them and square metres directly.
Temperature is different
Temperature scales have different zero points, so conversion needs an offset, not just a ratio: Fahrenheit = Celsius × 9/5 + 32, and Kelvin = Celsius + 273.15. This is why 0°C is 32°F, and why doubling a Celsius temperature does not double the Fahrenheit one.
MB vs MiB: the storage trap
Drive manufacturers use decimal units (1 GB = 1,000 MB) while operating systems often report binary units (1 GiB = 1,024 MiB). That is why a "500 GB" disk shows as roughly 465 GiB in Windows. The data category includes both conventions so you can translate between the sticker and the operating system.
Worked example: pricing land per cent vs per square foot
A listing offers a 6.5 cent plot for ₹78 lakh, and another offers 3,000 sq ft for ₹75 lakh. Convert: 6.5 cents is 2,831 sq ft, so the first plot costs ₹2,755 per sq ft while the second costs ₹2,500. The "cheaper looking" bigger-number plot is actually 10% more expensive per unit of land. Converting both sides to one unit before comparing is the whole game in property, groceries (per kg vs per pound) and cloud storage (per GB vs per TB).
Precision and rounding
The converter shows more decimal places for small results and fewer for large ones, because meaningful precision depends on magnitude: 0.3048 metres matters in a foot, while the third decimal of a kilometre rarely does. All arithmetic is done at full double precision internally, and only the display is rounded, so chained conversions do not accumulate error.
Frequently asked questions
How many cents are in one acre?
Exactly 100. One cent is 435.6 square feet, so one acre is 43,560 square feet. Cents are the standard sub-acre unit in Tamil Nadu and Kerala land records.
What is a ground in Chennai real estate?
A ground is 2,400 square feet, or about 223 square metres. It is the traditional plot unit in Chennai listings; 2.4 grounds make roughly one-eighth of an acre... more precisely, one acre is 18.15 grounds.
Why does my 1 TB drive show less space on my computer?
Manufacturers count 1 TB as 1,000,000,000,000 bytes, while operating systems often display binary tebibytes (1 TiB = 1,099,511,627,776 bytes). 1 TB is therefore about 0.909 TiB, before filesystem overhead.
Are these conversions exact?
Yes, they use the exact legal definitions of each unit (for example 1 inch = 25.4 mm precisely). The displayed result is rounded only for readability.