Steam-to-Carbon (S/C
CH4
) Ratio Calculator
Calculates S/C
CH4
= n(H
2
O) / n(CH
4
). Recommended target: S/C ≥ 2.5 for steam methane reforming.
Biogas Feed
CH
4
(molar %)
CO
2
(molar %)
Biogas flow
kg / hr
Nm³ / hr
mol / s
Steam Feed
Steam flow
kg / hr
mol / s
Normal Conditions (for biogas Nm³)
0 °C, 1 atm (IUPAC / ISO 2533)
15 °C, 1 atm (ISO 13443 / gas industry)
20 °C, 1 atm (NIST / ambient)
25 °C, 1 atm (SATP)
Target S/C Ratio
Target S/C
CH4
Calculate S/C Ratio
Results
Suggestions to reach S/C = 2.5