Wind Speed Converter
Convert wind speed between km/h, mph, knots, m/s, and Beaufort scale. Free online wind speed converter for meteorology, sailing, aviation, and weather analysis.
Understanding Wind Speed Measurements
Wind speed measures how fast air moves horizontally. Different industries use different units. Meteorologists use meters per second. Aviation uses knots. Public forecasts use miles per hour or kilometers per hour.
The Beaufort scale describes wind effects on land and sea. Force 0 means calm conditions. Force 12 indicates hurricane strength. This scale helps visualize wind impact without instruments.
Beaufort Wind Scale
| Force | Description | mph | km/h | Knots | Sea Conditions |
|---|---|---|---|---|---|
| 0 | Calm | Less than 1 | Less than 1 | Less than 1 | Glassy, mirror-like |
| 1 | Light Air | 1-3 | 1-5 | 1-3 | Ripples without crests |
| 2 | Light Breeze | 4-7 | 6-11 | 4-6 | Small wavelets |
| 3 | Gentle Breeze | 8-12 | 12-19 | 7-10 | Large wavelets, scattered whitecaps |
| 4 | Moderate Breeze | 13-18 | 20-28 | 11-16 | Small waves, numerous whitecaps |
| 5 | Fresh Breeze | 19-24 | 29-38 | 17-21 | Moderate waves, many whitecaps |
| 6 | Strong Breeze | 25-31 | 39-49 | 22-27 | Large waves, foam streaks |
| 7 | High Wind | 32-38 | 50-61 | 28-33 | Sea heaps up, breaking waves |
| 8 | Gale | 39-46 | 62-74 | 34-40 | Moderately high waves, spindrift |
| 9 | Strong Gale | 47-54 | 75-88 | 41-47 | High waves, dense foam |
| 10 | Storm | 55-63 | 89-102 | 48-55 | Very high waves, reduced visibility |
| 11 | Violent Storm | 64-72 | 103-117 | 56-63 | Exceptionally high waves |
| 12 | Hurricane | 73+ | 118+ | 64+ | Air filled with foam, white sea |
Wind Speed Conversion Formulas
Convert between wind speed units using these formulas.
Example: Converting 50 km/h to mph and knots
Wind Speed by Activity
| Activity | Ideal Wind Speed | Maximum Safe Wind |
|---|---|---|
| Sailing (recreational) | 10-20 knots | 30 knots |
| Windsurfing | 15-25 knots | 35 knots |
| Kitesurfing | 12-25 knots | 35 knots |
| Paragliding | 5-15 mph | 25 mph |
| Cycling | Less than 10 mph | 30 mph |
| Golf | Less than 15 mph | 40 mph |
| Drone flying | Less than 10 mph | 25 mph |
Wind Safety Guidelines
- Secure loose objects when winds exceed 25 mph
- Avoid boating when small craft advisories are issued
- Stay indoors during high wind warnings (58+ mph)
- Hurricane force winds (74+ mph) cause structural damage
- Wind chill increases risk of frostbite in cold weather
Frequently Asked Questions
What wind speed is considered windy?
Winds of 20-30 mph feel noticeably windy. Winds above 35 mph make outdoor activities difficult. Winds above 50 mph can cause damage to structures and trees.
Why do sailors use knots instead of mph?
Knots measure nautical miles per hour. One nautical mile equals one minute of latitude. This unit simplifies navigation calculations at sea where distances use nautical miles.
How is wind speed measured?
Anemometers measure wind speed mechanically or electronically. Cup anemometers spin faster in stronger winds. Ultrasonic anemometers measure sound wave travel time. Weather stations report average and gust speeds.
What is the difference between wind gust and sustained wind?
Sustained wind averages speed over 1-10 minutes. Gusts are brief increases lasting seconds. Gusts typically exceed sustained winds by 30-50 percent. Weather reports list both values.
Other Free Tools
Speed Converter
Convert speed units — km/h, mph, m/s, knots, and more. Free online speed converter for travel, sports, physics, and engineering.
Length Converter
Convert length units instantly — meters, feet, inches, kilometers, miles, yards, and more. Free online length converter for everyday and scientific use.
Acceleration Converter
Convert acceleration units — m/s², g-force, ft/s², Gal, and more. Accurate online converter for physics, aerospace, and mechanical engineering.
Rainfall Converter
Convert rainfall measurements between millimeters, inches, liters per square meter, and more. Free online precipitation converter for meteorology, hydrology, and agriculture.
Humidity Ratio Converter
Convert between relative humidity, absolute humidity, specific humidity, and humidity ratio. Free online humidity converter for HVAC, meteorology, and building climate control.
Dew Point Calculator
Calculate dew point temperature from relative humidity and air temperature instantly. Free online dew point calculator for weather forecasting, HVAC design, and condensation analysis.
Time Converter
Convert time units — seconds, minutes, hours, days, weeks, months, years. Simple online time converter for everyday and scientific use.
Weight and Mass Converter
Convert weight and mass units — kilograms, pounds, grams, ounces, tons, and more. Accurate online weight converter for cooking, shipping, and science.
Volume Converter
Convert volume units — liters, gallons, milliliters, cubic feet, fluid ounces, and more. Free online volume converter for cooking and engineering.
Area Converter
Convert area units — square meters, acres, hectares, square feet, square kilometers, and more. Ideal for real estate and construction.
Angle Converter
Convert angle units — degrees, radians, gradians, arcminutes, arcseconds, and more. Accurate online angle converter for geometry and engineering.
Angular Velocity Converter
Convert angular velocity units — radians/second, degrees/second, RPM, and more. Free online converter for physics and mechanical engineering.
Angular Acceleration Converter
Convert angular acceleration units — rad/s², deg/s², rev/min², and more. Free online converter for rotational dynamics and engineering.
Force Converter
Convert force units — newtons, pound-force, kilogram-force, dynes, and more. Free online force converter for physics and engineering.
Fuel Consumption Converter
Convert fuel consumption units — MPG, L/100km, km/L, and more. Free online fuel economy converter for cars, trucks, and fleet management.
Fuel Efficiency by Volume Converter
Convert volumetric fuel efficiency — L/100km, MPG, km/L, and more. Accurate online fuel economy converter for vehicles and fleet management.
Pressure Converter
Convert pressure units — pascals, bar, PSI, atmospheres, torr, and more. Free online pressure converter for engineering and science.
Energy Converter
Convert energy units — joules, calories, kilowatt-hours, BTU, electronvolts, and more. Free energy converter for physics and engineering.
Power Converter
Convert power units — watts, kilowatts, horsepower, megawatts, and more. Accurate online power converter for engineering calculations.
Density Converter
Convert density units — kg/m³, g/cm³, lb/ft³, lb/in³, and more. Free online density converter for material science, chemistry, and engineering.
Dynamic Viscosity Converter
Convert dynamic viscosity units — Pa·s, centipoise, poise, lb/(ft·s), and more. Free online converter for fluid mechanics and chemical engineering.
Kinematic Viscosity Converter
Convert kinematic viscosity units — m²/s, centistokes, stokes, ft²/s, and more. Accurate online converter for fluid dynamics and oil analysis.
Surface Tension Converter
Convert surface tension units — N/m, mN/m, dyne/cm, lbf/ft, and more. Free online converter for chemistry and materials science.
Mass Flux Density Converter
Convert mass flux density units — kg/(m²·s), lb/(ft²·s), and more. Free online mass flux converter for chemical engineering and filtration.
Linear Current Density Converter
Convert linear current density units — A/m, mA/cm, kA/m, and more. Free online converter for electromagnetics and electrical engineering.
Electric Field Strength Converter
Convert electric field strength units — V/m, kV/m, N/C, and more. Free online electric field converter for electrostatics and antenna design.
Light-Years to Parsecs Converter
Convert astronomical distances between light-years, parsecs, astronomical units, and kilometers. Free online space distance converter for astronomy, astrophysics, and science education.
Astronomical Unit (AU) Converter
Convert astronomical units to light-years, parsecs, kilometers, miles, and more. Free online AU converter for planetary science, astronomy, and space exploration calculations.
Running Pace to Speed Converter
Convert running pace (min/km or min/mile) to speed (km/h or mph) instantly. Free online running pace converter for athletes, marathon runners, and fitness tracking.
Horsepower to Animals Converter
How many horses is your car's engine worth? Convert horsepower to fun animal equivalents — horses, hamsters, elephants, and more. A lighthearted power converter for curious minds.