m/s to FPM Calculator
1 m/s = 196.8504 fpm exactly, derived from 1 m = 3.28084 ft and 1 minute = 60 seconds, giving 3.28084 × 60 = 196.8504. Rounded for engineering use, 1 m/s ≈ 196.85 fpm. The reverse...
Formula
Source: Engineering Toolbox, ASHRAE | Last reviewed: June 8, 2026
Examples
1 m/s
= 196.9 fpm
1 m/s = 196.9 FPM
5 m/s
= 984.3 fpm
Typical duct velocity (5 m/s ≈ 1,000 FPM)
0.5 m/s
= 98.4 fpm
Fume hood face velocity (0.5 m/s)
25 m/s
= 4921 fpm
Industrial exhaust velocity
Quick Reference Table
| m/s | FPM |
|---|---|
| 0.25 | 49.2 |
| 0.5 | 98.4 |
| 1 | 196.9 |
| 2.5 | 492.1 |
| 5 | 984.3 |
| 10 | 1969 |
| 15 | 2953 |
| 25 | 4921 |
Popular Conversions
Quick answers for the most-searched m/s to fpm values.
2.5 m/s to FPM
2.5 m/s = 492.1 fpm
Typical commercial duct velocity. At 2.5 m/s (492 FPM), duct noise is minimal and pressure drop is low — ideal for office and retail branch ducts per SMACNA guidelines.
1.5 m/s to FPM
1.5 m/s = 295.3 fpm
Residential branch duct velocity. 1.5 m/s (295 FPM) is recommended for bedroom and living room supply ducts to minimize noise and draft complaints.
10 m/s to FPM
10 m/s = 1968.5 fpm
Industrial exhaust velocity. At 10 m/s (1969 FPM), this speed is common in dust collection, fume extraction, and high-pressure industrial HVAC mains where noise is not critical.
5 m/s to FPM
5 m/s = 984.3 fpm
The most frequently used reference point. 5 m/s (≈1,000 FPM) is a standard design velocity for commercial main supply ducts — balancing airflow efficiency against noise and pressure drop.
0.5 m/s to FPM
0.5 m/s = 98.4 fpm
Laboratory fume hood face velocity. OSHA and ASHRAE require 80-120 FPM (0.4-0.6 m/s). 100 FPM is the most common regulatory standard for safe containment without excessive turbulence.
25 m/s to FPM
25 m/s = 4921.3 fpm
High-velocity industrial exhaust. Found in woodworking dust collection, chemical fume hood exhaust stacks, and high-speed pneumatic conveying systems where pressure drop is secondary to transport velocity.
Where is this used?
Laboratory fume hood face velocity requirements (typically 100 FPM = 0.5 m/s).
Industrial ventilation: capture velocity for hoods and exhaust systems.
In the international cleanroom design community, supply air face velocity at HEPA filter banks is specified in m/s (0.45 ± 0.10 m/s for ISO 8/Class 100,000 down to 0.20–0.30 m/s for unidirectional flow Class 5) while the US semiconductor industry has historically specified the same value in fpm (90 ± 20 fpm for Class 100,000), requiring conversion at the equipment specification and CFD modeling boundary.
Pharmaceutical isolator and aseptic processing environment design per EU GMP Annex 1 specifies air velocity at the critical zone in m/s (0.45 m/s typical for unidirectional flow cabinets), while the same documentation in US FDA submissions may carry the value in fpm (88.6 fpm) for the local engineering team.
Industrial spray painting booth ventilation per OSHA 29 CFR 1910.94 specifies capture velocity in fpm (100 fpm for general spray, 200 fpm for electrostatic) while the European equivalent EN 12215 specifies the same in m/s (0.5 m/s and 1.0 m/s) — the conversion is required when certifying paint booths from US OEMs for European automotive assembly plants.
Tunnel ventilation design for road tunnels per NFPA 502 (US) specifies critical velocity for smoke control in fpm (typically 200–300 fpm longitudinal), while PIARC and European standards use m/s (1.0–1.5 m/s) — the same physical air velocity moves the smoke in the same way, but the documentation units differ.
Building wind tunnel testing and CFD modeling commonly report wind velocity in m/s (the standard unit for atmospheric boundary layer studies per ASCE 7 and EN 1991-1-4), while the data may need to be converted to fpm for US-spec structural wind load calculations.
Elevator piston effect analysis for high-rise buildings (the air pressure pulse created by a moving elevator car) uses air velocity in fpm in the US (per ASME A17.1) and m/s in Europe, with the conversion required for international elevator design.
Engine dynamometer testing in automotive engineering uses air velocity for combustion air measurement in m/s (per ISO 1585) and fpm in older US standards, with the conversion applied in the brake specific fuel consumption (BSFC) calculation.
Wind engineering for natural ventilation design in commercial buildings uses wind velocity in m/s (per ASHRAE Fundamentals Chapter 16) and fpm in legacy US practice, with the conversion applied when using the wind pressure coefficient method for building infiltration calculations.
Industry Standards Referenced
Frequently Asked Questions
What is a good duct velocity for HVAC?
Recommended duct velocities: residential branches 600-900 FPM (3-4.5 m/s), main ducts 700-1,000 FPM (3.5-5 m/s), commercial low-pressure 1,000-1,500 FPM (5-7.6 m/s). Higher velocities save duct cost but increase noise and pressure drop.
How does velocity relate to CFM?
CFM = Velocity (FPM) × Duct Area (ft²). So a 2 ft² duct at 1,000 FPM carries 2,000 CFM. This makes velocity-to-CFM and CFM-to-velocity conversions fundamental to duct sizing.
What face velocity is required for a fume hood?
OSHA and ASHRAE specify 80-120 FPM (0.4-0.6 m/s) face velocity for laboratory fume hoods, with 100 FPM (0.5 m/s) being the most common standard. Lower velocities risk containment failure; higher velocities cause turbulence.
How fast is 10 m/s in FPM?
10 m/s = 1,968.5 FPM. This velocity is typical in industrial exhaust ducts and high-pressure HVAC systems. At this speed, duct noise and pressure drop become significant — acoustic lining or larger ducts may be required.
What is the formula to convert m/s to FPM manually?
FPM = m/s × 196.85. The conversion factor comes from: 1 m = 3.28084 ft, × 60 seconds/min = 196.8504 ft/min per m/s. For quick estimates, multiply m/s by 200 (5% high) or use ×197 for precision.
Why is FPM still used instead of m/s in the US?
FPM persists in US HVAC practice because duct sizing charts, fan curves, and instrument scales are historically calibrated in imperial units. ASHRAE publishes its fundamentals in both I-P (FPM) and SI (m/s) editions, but field instruments, construction specifications, and code requirements remain predominantly in FPM. Gradual conversion is occurring, especially in international projects.
How do I convert duct velocity (FPM) to CFM?
Multiply FPM by the duct cross-sectional area in ft²: CFM = Velocity (FPM) × Area (ft²). For example, 1000 FPM through a 2 ft² duct carries 2000 CFM. For round ducts, use Area = π × (diameter in ft/2)². All our airflow converters include both velocity and volumetric flow conversions.
Reviewed for accuracy
Reviewed against ASHRAE 111 and SMACNA duct design standards for HVAC velocity · Last reviewed: June 8, 2026
All calculations are for reference only. Always verify with manufacturer data and a qualified engineer for critical applications. Learn about our editorial process.