Metre
A metre (US spelling, meter) is the basic unit of length in the SI measurement system. According to the earliest definition (dating to the French Revolution), it was 1/10,000,000th (one ten-millionth) of the distance between the Earth's equator and the North Pole along the Paris meridian. The metre is now officially defined as the distance light travels in the vacuum in 1/299,792,458th of the second.
In the imperial system of measurement, one metre is equal to about 39.37 inches, 3.28 feet, or about 1.09 yards.
Units based on the metre edit
- 1 km (kilometre) = 1000 m
- 100 cm (centimetres) = 1 m
- 1000 mm (millimetres) = 1 m
- 1,000,000,000 nm (nanometres) = 1 m
