Convert Grams per Second to Pounds per Second (g/s to lb/s)

Formula

lb/s = g/s × 0.002204622621849

or lb/s = g/s ÷ 453.59237

Derivation from SI units:

• 1 g/s = 10⁻³ kg/s.
• 1 lb/s = 0.45359237 kg/s.
• 1 g/s = 0.001 kg/s ÷ 0.45359237 kg/s per lb/s = 0.002204622621849 lb/s

Both units are defined exactly, so the factor is exact. Gram per Second definition: gram per second; Pound per Second definition: pound per second.

Worked examples

1. A reading of 2 g/s converts to 0.004409245244 lb/s.
   2 g/s × 0.002204622622 = 0.004409245244 lb/s
2. A value of 20 g/s is 0.04409245244 lb/s.
   20 g/s × 0.002204622622 = 0.04409245244 lb/s

Where it's used

Grams per Second are used for automotive MAF sensors, while pounds per second appear in gas turbine and jet engine air flow. Both measure mass flow rate ṁ, so the conversion is a fixed factor.

Gram per Second to other mass flow rate units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4 (derived units with special names).
• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound per second".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.