Length Converter

1 metre equals 3.28084 feet, so multiply metres by 3.28084 to get feet, or divide feet by 3.28084 to get metres. A 1.75 m person is 5.74 feet, which is 5 feet 8.9 inches. For quick mental maths, 3 metres is just under 10 feet, and 1 foot is about 30 cm.

1 inch equals 2.54 cm exactly. So a 32-inch waist is 81.28 cm, and a 15.6-inch laptop is 39.62 cm wide. Going the other way, 100 cm equals 39.37 inches. The 2.54 conversion is defined by international agreement, not measured, so it never changes.

Bigha is not standard across India : it varies by state. In UP and Bihar, 1 bigha is about 2,529 sq m or 27,225 sq ft. In Rajasthan, 1 bigha is about 1,618 sq m. In West Bengal, 1 bigha equals 1,338 sq m. Always confirm the local definition before buying or selling land. Note that bigha is an area unit, not length.

Metric (metres, centimetres, kilometres) is the international standard used in science, India, and most of the world. Imperial (feet, inches, miles, yards) is mainly used in the US and informally for height and TV or screen sizes. Most engineering documents in India use metric, while real estate often mixes both.

1 mile equals 1.60934 km, and 1 km equals 0.6214 miles. So 60 mph is about 96.5 kmph, and 100 kmph is roughly 62 mph. For mental conversion, multiply miles by 1.6 (slightly low) or by 8 by 5 to switch to km : close enough for everyday use.

For everyday work, the millimetre (1 mm equals 0.001 m) handles screw sizes, paper thickness, and rainfall. Below that, micrometres (μm, 0.001 mm) measure cell sizes and dust, and nanometres measure wavelengths of light. The calculator supports the common range from nanometres up to kilometres and miles.