Advanced Flow Rate Converter
Flow Conversion + Graham's Law
Volumetric Flow Input
Gas Properties
Air - Excel method using ideal gas law (±2-5% accuracy)
MW: 28.97, γ: 1.4, ρ_std: 1.293 kg/m³
MW: 28.97, γ: 1.4, ρ_std: 1.293 kg/m³
Operating Conditions
Graham's Law Gas Conversion
Convert flow rates between different gases for leak testing, process scaling, and gas substitution applications.
Source Gas
→
Target Gas
Equivalent Flow Rate:
---
Conversion ratio: ---
Graham's Law: Rate₁/Rate₂ = √(MW₂/MW₁)
About This Flow Rate Calculator
Calculation Method:
- Excel Method (Ideal Gas Law): Simple, fast calculations using ρ = (P×MW)/(R×T). Good for moderate pressures (±2-5% accuracy)
- Enhanced Gas Database: Includes standard densities, heat ratios, and specific gravities from Excel properties
- Bidirectional Conversion: Volume ↔ Mass flow with ideal gas calculations
- SCFM Primary Input: Uses standard conditions as the reference point for volumetric flows
Graham's Law Applications:
- Leak Testing: Convert from helium leak rates to actual gas rates
- Process Scaling: Scale flow rates when changing process gases
- Gas Substitution: Find equivalent flow rates for different gases
- Calibration: Convert between test gas and measurement gas
Accuracy Notes:
- Ideal Gas Law: Excellent for most engineering applications up to moderate pressures
- Temperature Range: Valid from -300°F to +1200°F
- Pressure Range: Optimized for 0-400 PSIA applications
- Graham's Law: Applies to molecular effusion and diffusion through porous media
Engineering Grade: This calculator uses proven ideal gas law calculations for reliable flow rate conversions in industrial applications.