RubanTools

Unit Converters

21 free converters for length, weight, area, temperature, speed and Indian land units - all results shown at once.

Length Converter

Convert between mm, cm, m, km, inches, feet, yards, miles and nautical miles - all units shown instantly.

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Weight Converter

Convert between mg, g, kg, quintal, tonne, lb, oz and stone - all results shown at once.

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Temperature Converter

Instantly convert between Celsius, Fahrenheit and Kelvin with exact formula output.

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Area Converter

Convert sq ft, sq m, acre, hectare, ground, cent, bigha, kanal, marla and 5 more area units.

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Volume Converter

Convert between mL, litre, gallon (US/UK), cup, tablespoon, teaspoon, fl oz, quart and pint.

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Speed Converter

Convert km/h, mph, m/s, knots, ft/s and Mach - all results shown simultaneously.

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Time Converter

Convert seconds, minutes, hours, days, weeks, months and years - all at once.

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Data Storage Converter

Convert between bit, byte, KB, MB, GB, TB and PB using the IEC 1024-based binary standard.

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Cooking Converter

Convert cups, tablespoons, teaspoons, fluid ounces, pints, quarts, gallons and mL.

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Energy Converter

Convert joule, kilojoule, calorie, kcal, Wh, kWh, BTU, eV and erg - all at once.

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Power Converter

Convert watt, kilowatt, megawatt, horsepower (metric & electric) and BTU/hr.

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Pressure Converter

Convert Pascal, bar, psi, atm, mmHg, kPa, MPa, torr, inHg and mbar instantly.

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Fuel Economy Converter

Convert km/L (India), mpg (US/UK), L/100km and miles/L. Essential for car comparisons.

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Frequency Converter

Convert Hz, kHz, MHz, GHz, THz and RPM - all units shown simultaneously.

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Angle Converter

Convert degrees, radians, gradians, arcminutes, arcseconds, turns and mils.

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Sq Ft to Sq M

Instantly convert square feet to square metres and back. 1 sq ft = 0.0929 sq m.

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Ground to Sq Ft

Convert ground to square feet for Tamil Nadu land transactions. 1 ground = 2,400 sq ft.

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Cent to Sq Ft

Convert cent to square feet for Kerala and Tamil Nadu land areas. 1 cent = 435.6 sq ft.

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Bigha to Acre

Convert bigha to acres for North Indian land records. 1 bigha (UP/Rajasthan) = 0.625 acres.

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Kanal to Marla

Convert kanal to marla for Punjab and Haryana land. 1 kanal = 20 marlas = 5,445 sq ft.

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Acre to Hectare

Convert acres to hectares and back. 1 acre = 0.404686 ha. Used in agriculture and government records.

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Unit Converter Tools

Unit conversion is the process of expressing a measurement in a different unit while preserving its value. From the metric system established in France in 1795 to India's adoption of the International System of Units (SI) in 1956, standardised measurement has underpinned science, trade, and engineering globally. India officially shifted to the metric system by 1962 under the Standards of Weights and Measures Act, replacing colonial-era British units still found in older property documents and engineering texts.

Indian Land Measurement Units

India retains many regional land measurement units that vary by state. A "ground" equals 2,400 square feet in Tamil Nadu, while a "bigha" ranges from 1,600 to 4,000 square metres depending on the state. "Cent," "kanal," and "marla" are common in South and North India respectively. Buyers and sellers navigating property registrations, RERA filings, and bank loan documentation frequently need to convert between these local units and square feet or square metres, making this tool category especially valuable.

Everyday and Professional Applications

Engineering students preparing for GATE, professionals working on BIS-certified products, and students in CBSE and ICSE science courses all depend on unit conversion daily. Temperature conversions (Celsius to Fahrenheit) are essential in medical and culinary contexts, while speed and energy converters support physics problem-solving. With 21 converters covering length, weight, temperature, area, volume, speed, and energy, this hub provides every conversion needed in one place.

Unit Converters FAQ

1 sq ft = 0.0929 sq m. Enter value in our Sq Ft to Sq M converter; it shows both directions instantly.

1 ground = 2,400 sq ft (Tamil Nadu land measurement). Our Ground to Sq Ft converter handles all common Tamil Nadu and Kerala land units.

Varies by state: UP/Rajasthan = 1 acre ÷ 0.625 = 1.6 bigha; MP = 3 bigha per acre. Our Bigha to Acre converter handles state-wise differences.

Celsius (°C) for weather and medicine; Kelvin in science. Our Temperature Converter converts between Celsius, Fahrenheit and Kelvin with exact formulas.