The knot equals one nautical mile per hour โ 1.852 km/h. It is the international standard in marine navigation and aviation. Commercial airliners cruise at 450โ500 knots. Sailboats in light breeze: 2โ6 knots.
Real-world: Airbus A380 cruise: ~490 knots. Cruise ship: 20 knots. Sailing yacht: 6 knots typical.
Read full knot reference โKilometres per hour (km/h) is the standard speed unit in most of the world. European motorways typically allow 120โ130 km/h; urban limits are 50 km/h. Car speedometers in metric countries are marked in km/h, often with smaller mph numbers for US and UK travel.
Real-world: German Autobahn typical speed: 130 km/h (recommended) to 180+ (no limit sections). French limit: 130 km/h. Urban: 50 km/h.
Read full kilometer per hour reference โ