Nm³/h to SCFH Converter
Nm³/h (Normal cubic meters per hour) and SCFH (Standard cubic feet per hour) are both volumetric flow units normalized to standard reference conditions, so the conversion is a pure...
Formula
Source: Engineering Toolbox, NIST | Last reviewed: June 8, 2026
Examples
1 nm3h
= 35.31 SCFH
1 Nm³/h = 35.31 SCFH
10 nm3h
= 353.1 SCFH
100 nm3h
= 3531 SCFH
1000 nm3h
= 35315 SCFH
Quick Reference Table
| Nm³/h | SCFH |
|---|---|
| 1 | 35.3 |
| 5 | 176.6 |
| 10 | 353.1 |
| 50 | 1766 |
| 100 | 3531 |
| 500 | 17657 |
| 1000 | 35315 |
Where is this used?
Commonly used in natural gas, hydrogen, and industrial gas applications.
In the global natural gas market, European pipeline operators (Gasunie, Open Grid Europe, GRTgaz, Enagás) report capacity and flow in Nm³/h (or more commonly in GWh for thermal energy), while US operators (Williams, Kinder Morgan, Enbridge, Energy Transfer) report in SCFH or MSCFD (thousand standard cubic feet per day).
International LNG trading uses both Nm³/h (production rate) and MMBtu (heating value), with the conversion applied to compare plant capacities across regions.
Air separation plant (ASU) production rates for oxygen, nitrogen, and argon are universally in Nm³/h or tons per day (tpd) in international practice (Linde, Air Liquide, Air Products, Messer), while the equivalent US plant production is sometimes reported in SCFH — a 1,000 Nm³/h oxygen plant produces 35,315 SCFH or about 38,200 standard m³/h depending on the standard used.
Hydrogen production by electrolysis and steam methane reforming is quoted in Nm³/h for international projects (a 100 MW PEM electrolyzer produces about 2,000 Nm³/h of H₂, or 70,600 SCFH) and the same number must be converted to SCFH or kg/h for US Department of Energy hydrogen program documentation and for the US-spec hydrogen refueling station capacity planning.
Industrial gas consumption at large chemical and petrochemical plants is tracked in Nm³/h for European operations (BASF, SABIC, INEOS) and in SCFH or MSCFD for US operations (Dow, ExxonMobil, Chevron Phillips), with the conversion required for cross-company benchmarking and for global production planning.
Carbon capture and storage (CCS) and CO₂ sequestration project capacity is universally in Mt/year (million tons per year) or Nm³/h for international projects (Northern Lights, Porthos, Aramis) and in tcf/year or SCFH for US projects, with the conversion applied to compare project sizes across regions.
Helium, neon, krypton, and xenon specialty gas production and pricing uses Nm³/h for international contracts and SCFH for some US pricing, requiring the conversion at the contract negotiation and delivery reconciliation steps.
Industry Standards Referenced
Frequently Asked Questions
What is the difference between Nm³/h and m³/h?
Nm³/h is 'Normal' cubic meters per hour — referenced to standard conditions (0°C, 1.01325 bar). m³/h is actual cubic meters per hour at operating conditions. The conversion factor between them depends on temperature and pressure.
What standard conditions does Nm³ use?
European 'Normal' conditions are typically 0°C (273.15 K) and 1.01325 bar absolute. This differs from US 'Standard' conditions (60°F/68°F, 14.696 psia). Always verify the reference conditions with your specification.
How do I convert SCFH back to Nm³/h?
Divide SCFH by 35.3147. For quick estimates, multiply SCFH by 0.0283 to get Nm³/h.
Reviewed for accuracy
Reviewed against ISO 1217 compressed air performance standards · 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.