Gas Flow Rate Converter
Gas Flow Rate Converter
Std/Normal/Actual Volume · Mass | EOS (Z-factor) | MMSCFD · Sm³/h · Nm³/h · kg/s · kg/h · lb/h
Conversion Type
Std Vol
→ Mass
→ Mass
Act Vol
→ Mass
→ Mass
Mass
→ Std Vol
→ Std Vol
Std Vol
→ Act Vol
→ Act Vol
Input Flow
Gas Properties
Conversion Result
Result
---
Density Diagnostics
Operating Density
---kg/m³
Standard / Base Density
---kg/m³
MW / Specific Gravity
---
Volume Shrinkage (Q_act / Q_std)
---
Formula
ρ = P·MW / (Z·R·T) [EOS, kg/m³]
Ṁ = Q_std × ρ_std (std vol → mass)
Ṁ = Q_act × ρ_act (act vol → mass)
Ṁ = Q_std × ρ_std (std vol → mass)
Ṁ = Q_act × ρ_act (act vol → mass)
Technical Reference
Key Conversions
- Std Vol → Mass: Ṁ = Qstd × ρstd
- Act Vol → Mass: Ṁ = Qact × ρact
- Std → Act: Qact/Qstd = ρstd/ρact
- ppmv → mass: Ṁ = ppmv × 10⁻⁶ × Qmix,std × ρcomp,std
Equation of State
- ρ_act = (P · MW) / (Z · R · T)
- ρ_std = (Pstd · MW) / (Zstd · R · Tstd)
- R = 8.31446 kJ/(kmol·K)
- SG = MW / 28.97 (air basis)
Standard Bases
- Sm³: 15°C, 101.325 kPa → ρair ≈ 1.225 kg/m³
- Nm³: 0°C, 101.325 kPa → ρair ≈ 1.293 kg/m³
- SCF: 60°F, 14.696 psia
MMSCFD Quick Ref
- 1 MMSCFD = 1×10⁶ SCF/day @ 60°F, 14.696 psia
- = 1,179.87 Sm³/h (15°C basis)
- 1 MMSCMD = 41,666.7 Sm³/h or Nm³/h
- Basis is auto-selected from the chosen unit