In globally industrial operations where both imperial and metric standards are utilized for process design, simulation, control system calibration, and compliance reporting, gas flow unit conversions are crucial. From Standard Cubic Feet per Hour (SCFH) to Normal Cubic Meters per Hour (Nm³/h) is one such important conversion.
This article provides a clear definition, formula, examples, and usage of this conversion calculator to ensure accuracy in gas flow data across measurement systems.
SCFH to Nm³/h Gas Flow Conversion Calculator
The converter below will let you quickly change Standard Cubic Feet per Hour (SCFH) to Normal Cubic Meters per Hour (Nm³/h). For flow system sizing, calibration, and documentation, this tool streamlines real-time conversion.
Conversion Formula:
Nm³/h = SCFH × 0.0283168
Simply input the SCFH number; the calculator will show the Nm³/h outcome.
Definition: Standard Cubic Feet per Hour (SCFH)
A U.S. conventional metric used to gauge gas flow rates, SCFH is Standard Cubic Feet per Hour. “Standard” means, unless otherwise stated, 1 atm pressure (14.696 psi or 101.325 kPa) and 60°F (15.56°C).
Key Applications of SCFH
- Measurement of gas flow in systems supplying natural gas and fuel.
- HVAC, furnace, and boiler operation flow control.
- Sizing of equipment for industrial heating, welding, and combustion.
- Legacy system records in imperial units.
Definition: Normal Cubic Meters per Hour (Nm³/h)
A metric SI unit measuring gas flow at 0°C (273.15 K) and 1 atm pressure, Nm³/h, or Normal Cubic Meters per Hour, Especially in chemical, petrochemical, pharmaceutical, and environmental sectors, international technical standards largely recognize it.
Key Applications of Nm³/h
- Flow metering in chemical process industries
- Regulatory compliance emissions reporting
- Automation by SCADA/PLC integration
- Multinational engineering documentation employing SI units
Conversion Formula: SCFH to Nm³/h
SCFH (Standard Cubic Feet per Hour) can be converted to Nm³/h (Normal Cubic Meters per Hour) by applying the following formula:
Flow (Nm³/h) = Flow (SCFH) × 0.0283168
Under typical circumstances, the conversion factor 0.0283168 denotes the amount of cubic meters in one standard cubic foot.
Example Calculation
If a system is rated at 500 SCFH, then:
500 × 0.0283168 = 14.1584 Nm³/h
So, a gas flow rate of 500 SCFH equals approximately 14.16 Nm³/h.
Quick Reference Conversion Table
| SCFH | Nm³/h |
| 100 | 2.8317 |
| 200 | 5.6634 |
| 500 | 14.1584 |
| 1,000 | 28.3168 |
| 2,000 | 56.6336 |
| 5,000 | 141.584 |
| 10,000 | 283.168 |
| 20,000 | 566.336 |
| 50,000 | 1,415.84 |
Uses of SCFH to Nm³/h Conversion
- Match legacy imperial equipment with modern metric-based automation systems
- Uniform readings across worldwide project sites
- Facilitate precise SCADA logging, trending, and reporting
- Keep field instruments and DCS systems consistent.
- Calibrating devices in laboratories or test benches calls for conversion.
- Make that gas flow meters, controls, or orifice plates are appropriately sized.
- Many organizations call for metric reporting formats such as Nm³/h
- Facilitates effortless record-keeping and cross-jurisdictional audits
Who Should use this Conversion?
- Instrumentation engineers using mixed-unit field equipment
- Process Designers overseeing worldwide project specifications
- Compliance Officers producing safety and environmental reports
- Mechanical Engineers working on combustion systems and HVAC
- Automation specialists combining SI-based PLCs and DCS designs with imperial heritage systems
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 to Normal Cubic Meters per Hour (Nm³/h) with ease. Ideal for engineers, system designers, and instrumentation professionals working across imperial and metric gas flow units.){kind=link}