Convert Cubic Meters per Hour to SLPM

Formula

SLPM = m³/h × 16.66666666667

Derivation from SI units:

• 1 m³/h = 1 m³ ÷ 3600 s
• 1 SLPM = 10⁻³ m³ ÷ 60 s, measured at standard reference conditions
• 1 m³/h = 0.0002777777777778 m³/s ÷ 0.00001666666666667 m³/s per SLPM = 16.66666666667 SLPM
• Standard ↔ actual: Q_actual = Q_standard × (T_actual / T_ref) × (P_ref / P_actual), absolute T and P.

Both units are defined exactly, so the factor is exact. Cubic Meter per Hour definition: cubic meter per hour; SLPM definition: SLPM.

Worked examples

1. A reading of 150 m³/h converts to 2500 SLPM.
   150 m³/h × 16.66666667 = 2500 SLPM
2. A value of 1500 m³/h is 25000 SLPM.
   1500 m³/h × 16.66666667 = 25000 SLPM

Where it's used

Cubic Meters per Hour are used for air-handling unit and fan ratings in Europe and Asia, while SLPM appear in mass flow meters and controllers. Both measure volumetric flow rate (volume per unit time), so the conversion is a fixed factor.

Cubic Meter per Hour to other flow rate units

Frequently asked questions

Sources

• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (hour) with Table 2 (cubic metre).
• SEMI E12 Guide for Standard Temperature and Pressure Used in the Measurement of Mass Flow, SEMI , standard conditions 0 °C, 101.325 kPa.
• ISO 6358-1:2013 Pneumatic fluid power — Determination of flow-rate characteristics of components using compressible fluids, International Organization for Standardization .

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