Convert Meters per Second to Knots

The Meter per Second (symbol: m/s) is a unit of speed. The SI derived unit of speed (and velocity magnitude) per ISO 80000-3 §3-8, derived from the SI base units of length (meter) and time (second). m/s is the universal unit in physics, classical mechanics, fluid dynamics, kinematics, and sound propagation — every equation of motion (v = v₀ + a·t; v² = v₀² + 2·a·Δx), Bernoulli's equation, Navier-Stokes momentum equations, and ideal-gas-kinetic-theory velocity formulations assumes m/s unless explicitly stated otherwise. Reference values: human walking speed 1.2-1.5 m/s (per ISO 7176 wheelchair-accessibility studies + ADA walkway-grade limits); human running 5-12 m/s (Usain Bolt 100 m peak ~12.2 m/s; marathon pace 5.5 m/s); highway driving 25-35 m/s (60-80 mph); commercial jetliner cruise ~245 m/s (Mach 0.8 at FL350 -57 °C); speed of sound in air at sea level 343 m/s (at 20 °C, 50% RH per ISO 9613); speed of sound in seawater ~1,500 m/s (used in sonar per Mackenzie equation); speed of light in vacuum c = 299,792,458 m/s (exact per 1983 BIPM definition); Earth orbital speed around Sun 29,780 m/s; ISS orbital velocity 7,660 m/s; escape velocity from Earth surface 11,186 m/s. CFD solvers (ANSYS Fluent, OpenFOAM, STAR-CCM+) report velocity output in m/s by default in SI mode.

It belongs to the metric measurement system.

Meters per Second are commonly used in automotive engineering, aviation, athletics, and meteorology.

The Knot (symbol: kn) is a unit of speed. A unit of speed equal to exactly 1 nautical mile per hour per IMO + ICAO Annex 5 standards (1 nautical mile = 1,852 m exactly per 1929 International Hydrographic Conference; 1 knot = 1.852 km/h = 0.5144 m/s ≈ 1.15078 mph). Knots are the international working unit for: maritime shipping per IMO COLREGS + SOLAS (typical container ship cruise 14-25 knots; LNG carrier 19-20 knots; supertanker 13-16 knots; US Navy Arleigh Burke destroyer 30+ knots; America's Cup AC75 foiling monohull >50 knots peak); aviation worldwide per ICAO Doc 7910 + FAA AIM (commercial jet cruise Mach 0.78-0.85 ≈ 450-490 knots TAS; small GA aircraft 100-180 knots; pilots quote airspeed, wind speed, and ground speed exclusively in knots because the math of navigation is clean — one nautical mile = one minute of latitude, so a 60-knot wind moves a flight one nm-of-latitude per minute); recreational boating per USCG + RYA; meteorology in nautical/aviation contexts (METAR/TAF wind reports in knots worldwide). Name 'knot' from the historical Dutch 'chip log' (1500s) — a log on a knotted line was thrown overboard and the number of knots paid out in a measured time gave the ship's speed. Convert knots to mph by multiplying by 1.151; to km/h by multiplying by 1.852.

Knots are commonly used in automotive engineering, aviation, athletics, and meteorology.