Last updated: September 16, 2026
Quick answer: Multiply m/s by 2.237 to get mph. 1 m/s = 2.237 mph. So 10 m/s = 22.4 mph, 30 m/s = 67.1 mph, and 100 m/s = 223.7 mph.
Meter/second to Mile/hour
Instantly convert meter/second to mile/hour with fast, accurate, real-time results.
Meters per second is the SI unit for speed in physics and engineering; miles per hour is the everyday unit on US roads and weather reports. Textbook problems give answers in m/s; weather apps and car speedometers display mph. Knowing how to switch between them is useful for both contexts. For the reverse, see the mph to m/s converter. For km/h conversions, see the km/h to mph converter.
Formula: m/s to mph
One mile equals 1,609.344 meters, and one hour equals 3,600 seconds, so:
The rounded factor 2.237 is accurate to four significant figures — good enough for any practical use. To go back from mph to m/s, divide by 2.237 (or multiply by 0.44704).
Quick reference
| m/s | mph | km/h |
|---|---|---|
| 1 m/s | 2.24 mph | 3.6 km/h |
| 5 m/s | 11.18 mph | 18 km/h |
| 10 m/s | 22.37 mph | 36 km/h |
| 20 m/s | 44.74 mph | 72 km/h |
| 30 m/s | 67.11 mph | 108 km/h |
| 44.7 m/s | 100 mph | 160.9 km/h |
| 100 m/s | 223.7 mph | 360 km/h |
Beaufort Wind Scale in m/s and mph
Meteorologists describe wind in m/s; US forecasts use mph. The Beaufort scale spans both:
| Beaufort | Description | m/s range | mph range | Effects |
|---|---|---|---|---|
| 0 | Calm | 0–0.2 | 0–0.4 | Smoke rises vertically |
| 1 | Light air | 0.3–1.5 | 0.7–3.4 | Wind direction shown by smoke |
| 2 | Light breeze | 1.6–3.3 | 3.6–7.4 | Wind felt on face; leaves rustle |
| 3 | Gentle breeze | 3.4–5.4 | 7.6–12.1 | Leaves and twigs in motion |
| 4 | Moderate breeze | 5.5–7.9 | 12.3–17.7 | Raises dust; small branches move |
| 5 | Fresh breeze | 8.0–10.7 | 17.9–23.9 | Small trees sway |
| 6 | Strong breeze | 10.8–13.8 | 24.2–30.9 | Large branches move; umbrellas hard to control |
| 7 | Near gale | 13.9–17.1 | 31.1–38.3 | Whole trees in motion; walking difficult |
| 8 | Gale | 17.2–20.7 | 38.5–46.3 | Twigs breaking off trees |
| 9 | Strong gale | 20.8–24.4 | 46.5–54.6 | Slight structural damage |
| 10 | Storm | 24.5–28.4 | 54.8–63.6 | Trees uprooted; considerable damage |
| 11 | Violent storm | 28.5–32.6 | 63.8–73.0 | Widespread damage |
| 12 | Hurricane force | ≥32.7 | ≥73.1 | Devastating damage |
Sports and Human Movement Speeds
| Activity / athlete | m/s | mph |
|---|---|---|
| Average walking pace | 1.4 m/s | 3.1 mph |
| Jogging (easy run) | 2.5–3.0 m/s | 5.6–6.7 mph |
| Recreational cyclist | 4–6 m/s | 9–13 mph |
| 100m sprint (average) | ~10 m/s | ~22.4 mph |
| Usain Bolt (WR, 100m) | 10.44 m/s avg | 23.35 mph avg |
| Usain Bolt (top speed) | 12.4 m/s | 27.8 mph |
| Elite marathon pace | 5.7 m/s | 12.7 mph |
| Baseball pitch (fastball) | 42–45 m/s | 94–100 mph |
| Tennis serve (pro) | 62–70 m/s | 138–156 mph |
| Soccer kick (hard) | 30–35 m/s | 67–78 mph |
Physics Reference Speeds
| Speed | m/s | mph |
|---|---|---|
| Speed of sound (sea level, 20°C) | 343 m/s | 767 mph |
| Muzzle velocity (rifle bullet) | 900–1,200 m/s | 2,013–2,684 mph |
| Concorde cruise speed | 603 m/s | 1,350 mph (Mach 2) |
| Space Shuttle reentry | 7,800 m/s | 17,500 mph |
| Earth orbital speed | 29,780 m/s | 66,600 mph |
| Speed of light (vacuum) | 299,792,458 m/s | 670,616,629 mph |
Full m/s to mph Table
| m/s | mph | m/s | mph | m/s | mph |
|---|---|---|---|---|---|
| 1 | 2.24 | 15 | 33.55 | 60 | 134.22 |
| 2 | 4.47 | 20 | 44.74 | 70 | 156.59 |
| 3 | 6.71 | 25 | 55.92 | 80 | 178.95 |
| 4 | 8.95 | 30 | 67.11 | 90 | 201.32 |
| 5 | 11.18 | 35 | 78.29 | 100 | 223.69 |
| 6 | 13.42 | 40 | 89.48 | 150 | 335.54 |
| 7 | 15.66 | 44.7 | 100.00 | 200 | 447.39 |
| 8 | 17.90 | 45 | 100.66 | 300 | 671.08 |
| 9 | 20.13 | 50 | 111.85 | 343 | 767.27 |
| 10 | 22.37 | 55 | 123.03 | 1,000 | 2,236.9 |
FAQs About m/s to mph
How do you convert m/s to mph?
Multiply by 2.237. For example, 15 m/s × 2.237 = 33.6 mph. The exact factor is 3,600 ÷ 1,609.344 = 2.23694.
What is 10 m/s in mph?
10 m/s × 2.237 = 22.37 mph. This is roughly the average speed of a 100m sprint — fast running pace, not world record.
What is 30 m/s in mph?
30 m/s × 2.237 = 67.1 mph. This is about the speed of a fast highway car, or a Category 1 hurricane threshold (74 mph = 33.1 m/s).
Is m/s faster than mph?
A speed of 1 m/s is slower than 1 mph — 1 m/s ≈ 2.24 mph. But when comparing the same speed in both units, a larger m/s number beats a smaller mph number if the m/s figure × 2.237 exceeds the mph figure.
What is the speed of sound in mph?
At sea level and 20°C, the speed of sound is 343 m/s = 767 mph (Mach 1). At the cruising altitude of most jets (~35,000 ft, −56°C), it drops to about 295 m/s = 660 mph.
Sources
References & further reading
- Bureau International des Poids et Mesures (BIPM) — SI unit for speed: meter per second (m·s⁻¹)
- World Meteorological Organization — Guide to Meteorological Instruments — Beaufort scale definitions
- World Athletics — Usain Bolt 100m world record analysis (Berlin 2009): average 10.44 m/s, peak 12.4 m/s
- NIST — Speed of sound in dry air: 331.3 + 0.606 × T°C m/s
Related Converters
Creator
Shakeel Muzaffar is the Founder and Editor-in-Chief of MultiCalculators.com, bringing over 15 years of experience in digital publishing, product strategy, and online tool development. He leads the platform's editorial vision, ensuring every calculator meets strict standards for accuracy, usability, and real-world value. Shakeel personally oversees content quality, formula verification workflows, and the platform's commitment to publishing tools that are genuinely useful for students, professionals, and everyday users worldwide.
Areas of Expertise: Editorial Leadership, Digital Publishing, Product Strategy, Online Calculators, Web Standards
