Convert Liters per Square Decimeter per Minute to L/(m²·s)

Formula

L/(m²·s) = L/(dm²·min) × 1.666666666667

Derivation from SI units:

• 1 L/(dm²·min) = 10⁻³ m³ ÷ (10⁻² m² × 60 s) = 1/600 m/s ≈ 1.667 mm/s
• 1 L/(m²·s) = 10⁻³ m³ ÷ (1 m² × 1 s) = 10⁻³ m/s = 1 mm/s
• 1 L/(dm²·min) = 0.001666666666667 m/s ÷ 0.001 m/s per L/(m²·s) = 1.666666666667 L/(m²·s)

Both units are defined exactly, so the factor is exact. Liter per Square Decimeter per Minute definition: liter per square decimeter per minute; Liter per Square Meter per Second definition: liter per square meter per second.

Worked examples

1. 60 L/(dm²·min) is 100 L/(m²·s).
   60 L/(dm²·min) × 1.666666667 = 100 L/(m²·s)
2. A legacy specification of 100 L/(dm²·min) is 166.6666667 L/(m²·s).
   100 L/(dm²·min) × 1.666666667 = 166.6666667 L/(m²·s)

Where it's used

Legacy European textile specifications in L/(dm²·min) are converted to the ISO 9237 unit L/(m²·s). The factor is 5/3, about 1.667.

Liter per Square Decimeter per Minute to other face velocity & air permeability units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre, minute).
• ISO 9237:1995 Textiles — Determination of the permeability of fabrics to air, International Organization for Standardization , air permeability expressed per unit area.
• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre).

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