🔁 Conversion calculators

Units, number systems, lakh–crore–million and more. 20 calculators.

• Acres to Hectares ConverterConvert acres to hectares and hectares to acres — plus square metres and square feet.
• Area ConverterConvert square metres, square feet, acres, hectares, square yards and more — type in any field.
• CM to Inches ConverterConvert centimetres to inches and inches to centimetres instantly, with a handy conversion table.
• Energy Converter (kWh, J, kcal, BTU)Convert energy between joules, kilojoules, kWh, Wh, calories, kilocalories, BTU and therms.
• Feet to Meters ConverterConvert feet to metres and metres to feet — including heights in feet and inches.
• Flow Rate ConverterConvert volumetric flow between m³/h, L/min, L/s, US gpm, CFM and m³/s — for pumps, pipes and flow meters.
• Kg to Lbs ConverterConvert kilograms to pounds and pounds to kilograms instantly — plus stone and ounces.
• KM to Miles ConverterConvert kilometres to miles and miles to kilometres — for running, driving and travel distances.
• Length ConverterConvert between metres, feet, inches, centimetres, kilometres, miles, yards and millimetres — type in any field.
• Liters to Gallons ConverterConvert litres to US or UK gallons and gallons to litres — for fuel, water tanks and liquids.
• MM to Inches ConverterConvert millimetres to inches (decimal) and inches to millimetres for engineering, tools and pipe sizes.
• Number to Million ConverterConvert any number to millions, billions, lakhs and crores instantly — or type in any field to convert the other way.
• Power Converter (kW to HP, BTU/h)Convert power between kW, W, horsepower (hp and metric PS), BTU/h and tons of refrigeration.
• Pressure ConverterConvert bar, psi, kPa, MPa, atm, mbar, mmHg, inH₂O and mH₂O — for instruments, tyres, hydraulics and weather.
• PSI to Bar ConverterConvert psi to bar and bar to psi instantly — for tyres, compressors, hydraulics and pressure gauges.
• Speed Converter (km/h, mph, m/s, knots)Convert speeds between km/h, mph, m/s, ft/s and knots instantly — type in any field.
• Square Feet to Square Meters ConverterConvert square feet (sq ft) to square metres (m²) and back — for flats, houses, offices and flooring.
• Temperature ConverterConvert between Celsius, Fahrenheit and Kelvin instantly — type in any field.
• Torque Converter (N·m to lb·ft)Convert torque between N·m, kN·m, lbf·ft, lbf·in and kgf·m — for bolts, engines and motors.
• Volume ConverterConvert litres, gallons (US and UK), millilitres, cubic metres, cubic feet and cubic inches — type in any field.