Convert Feet per Minute to cm³/(s·cm²)

Formula

cm³/(s·cm²) = ft/min × 0.508

or cm³/(s·cm²) = ft/min ÷ 1.968503937008

Derivation from SI units:

• 1 ft/min = 0.3048 m ÷ 60 s = 0.00508 m/s
• 1 cm³/(s·cm²) = 10⁻⁶ m³ ÷ (10⁻⁴ m² × 1 s) = 0.01 m/s = 1 cm/s
• 1 ft/min = 0.00508 m/s ÷ 0.01 m/s per cm³/(s·cm²) = 0.508 cm³/(s·cm²)

Both units are defined exactly, so the factor is exact. Foot per Minute definition: foot per minute; Cubic Centimeter per Second per Square Centimeter definition: cubic centimeter per second per square centimeter.

Worked examples

1. A reading of 90 ft/min converts to 45.72 cm³/(s·cm²).
   90 ft/min × 0.508 = 45.72 cm³/(s·cm²)
2. A value of 300 ft/min is 152.4 cm³/(s·cm²).
   300 ft/min × 0.508 = 152.4 cm³/(s·cm²)

Where it's used

Feet per Minute are used for fume hood face velocity (commonly 80–120 fpm), while cubic centimeters per second per square centimeter appear in ASTM D737 fabric air permeability (SI reporting). Both measure face velocity and air permeability (volumetric flow per unit area), so the conversion is a fixed factor.

Foot per Minute to other face velocity & air permeability units

Frequently asked questions

Sources

• 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, "foot per minute (ft/min)".
• ASTM D737 Standard Test Method for Air Permeability of Textile Fabrics, ASTM International , SI results in cm³/s/cm².

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