Unit Converter: Length, Weight, Temperature, Area and 380 Units

How to use the unit converter

1. Pick a category (Length, Weight, Temperature, Area and 31 more) or start typing in the search box: "psi", "tola" or "marla" jumps straight to the right category.
2. Choose the two units and type a number on either side. The other side updates as you type, so you can also work backwards.
3. Read the formula line under the result. It shows the factor in both directions, for example 1 ft = 0.3048 m and 1 m = 3.28084 ft, so you can check the work or use it in a spreadsheet.
4. Use the table below the result to see the same value in every unit of the category at once. Click a row to make it the target unit.

You can type numbers as 1,250.5, 12,5 (comma decimal), 3/4 or 2.5e6. Running pace can be typed as 5:30. The address bar keeps your conversion (for example #length/ft/m/6), so Copy link shares exactly what you see.

Exact definitions used

Temperature formulas

Temperature scales have different zero points, so they need a formula, not a single factor:

• Celsius to Fahrenheit: °F = °C × 9/5 + 32. Example: 37 °C × 1.8 + 32 = 98.6 °F.
• Fahrenheit to Celsius: °C = (°F − 32) × 5/9. Example: (100 − 32) × 5/9 = 37.8 °C.
• Celsius to Kelvin: K = °C + 273.15. There is no degree sign on kelvin.
• −40 is the same in Celsius and Fahrenheit.

Land units in Pakistan and India: marla, kanal, acre

The marla is not the same everywhere, which is why the converter offers two versions:

• Revenue marla = 272.25 ft² (30.25 square yards). This is the traditional land-record value: 20 marla = 1 kanal = 5,445 ft², and 8 kanal = 1 acre = 43,560 ft².
• Housing-scheme marla = 225 ft². Many housing societies and some development authorities sell plots on this smaller marla, so a "10 marla" plot is 2,250 ft² instead of 2,722.5 ft².
• 1 murabba = 25 acres; 1 sarsai = 1/9 marla.

Always check which marla the sale deed or allotment letter uses. The difference on a 1-kanal plot is 945 ft².

In the Middle East land is often measured in dunams: the metric dunam used in Jordan, Palestine and Israel is 1,000 m², while the Iraqi dunam is 2,500 m². Egypt uses the feddan, about 4,200 m².

Gold and grain weights: tola, masha, ratti, seer, maund

The tola is still the everyday unit for gold in Pakistan, India and the Gulf gold souks. The converter uses the standard value 1 tola = 11.6638 g (180 grains). Gold jewellers in some markets quote a rounded 10 g "tola" instead, so confirm before you compare prices. Traditional subdivisions: 1 tola = 12 masha, 1 masha = 8 ratti. For grain: 1 seer = 80 tola (about 0.933 kg) and 1 maund = 40 seer (about 37.32 kg).

Lakh, crore and million

South Asia groups large numbers differently: 1 lakh = 100,000 and 1 crore = 10,000,000 (100 lakh). So 10 lakh = 1 million, 1 crore = 10 million and 100 crore = 1 billion (also called 1 arab). The Lakh, crore & million category converts between both systems.

MB vs MiB, and Mbps vs MB/s

Storage makers use decimal units (1 GB = 1,000,000,000 bytes), while Windows reports binary units under the same name (1 GiB = 1,073,741,824 bytes). That is why a "1 TB" drive shows about 931 GB in Windows. Internet speed is sold in megabits per second: divide Mbps by 8 to get megabytes per second, so a 100 Mbps line downloads at about 12.5 MB/s at best.

Fuel economy and running pace are inverse

Litres per 100 km goes down when km per litre goes up, so the converter uses 100 ÷ value instead of a factor: 5 L/100 km = 20 km/L ≈ 47 mpg (US). Running pace works the same way: 6:00 min/km = 10 km/h = 9:39 min/mile.

Cups to grams

A cup measures volume, so its weight depends on the ingredient. The converter uses typical weights for one US cup (236.6 mL): water 236.6 g, all-purpose flour about 120 g, white sugar about 200 g, butter 227 g, rice about 185 g. Flour that is scooped and packed can weigh 20% more than flour spooned into the cup, so weigh it when a recipe is precise.

Number bases

The Binary, hex & bases category converts whole numbers between base 2 and base 36, including binary, octal, decimal and hexadecimal. It uses exact big-integer arithmetic, so long values such as 64-bit IDs do not lose digits. Prefixes like 0x and 0b are accepted.

Values are calculated with standard floating-point arithmetic and shown to 10 significant digits by default. Blood sugar conversion is for glucose only (1 mmol/L = 18.016 mg/dL) and is not medical advice.

FAQ

Link to this tool

Found it useful? Put a link in your docs, README or forum answer so others can use it too:

<a href="https://headsntail.com/tools/unit-converter">Unit Converter (380 Units, Marla, Tola, Lakh)</a> (free, by HeadsNTail)

[Unit Converter (380 Units, Marla, Tola, Lakh)](https://headsntail.com/tools/unit-converter)

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