Convert Liters per Minute to SLPM
1 liter per minute (L/min) equals 1 SLPM, at the reference conditions 0 °C and 101.325 kPa, with the gas at those conditions.
1 L/min = 1 SLPM
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk liter per minute to SLPM converter to paste a column from Excel.
How to Convert Liter per Minute to SLPM
- 1 L/min = 1 SLPM
- 1 SLPM = 1 L/min
- Example: convert 15 L/min to SLPM: 15 L/min = 15 × 1 SLPM = 15 SLPM
Reference conditions. SLPM: Standard flow: volume the gas would occupy at the standard reference conditions (default 0 °C, 101.325 kPa). Converting to actual flow needs the actual temperature and pressure.
Standard vs actual flow. The values above assume the gas is at the standard reference conditions (0 °C, 101.325 kPa). Set the actual temperature and pressure in the converter to get the real volumetric flow.
Formula
SLPM = L/min × 1
Derivation from SI units:
- 1 L/min = 10⁻³ m³ ÷ 60 s
- 1 SLPM = 10⁻³ m³ ÷ 60 s, measured at standard reference conditions
- 1 L/min = 0.00001666666666667 m³/s ÷ 0.00001666666666667 m³/s per SLPM = 1 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. Liter per Minute definition: liter per minute; SLPM definition: SLPM.
Worked examples
- 20 L/min of actual flow at reference conditions is 20 SLPM.
20 L/min × 1 = 20 SLPM - A rotameter reading of 100 L/min at reference conditions corresponds to 100 SLPM.
100 L/min × 1 = 100 SLPM
Liter per Minute to SLPM conversion table
| Liters per Minute (L/min) | SLPM |
|---|---|
| 0.1 L/min | 0.1 SLPM |
| 0.5 L/min | 0.5 SLPM |
| 1 L/min | 1 SLPM |
| 2 L/min | 2 SLPM |
| 3 L/min | 3 SLPM |
| 4 L/min | 4 SLPM |
| 5 L/min | 5 SLPM |
| 6 L/min | 6 SLPM |
| 10 L/min | 10 SLPM |
| 15 L/min | 15 SLPM |
| 20 L/min | 20 SLPM |
| 25 L/min | 25 SLPM |
| 28.3 L/min | 28.3 SLPM |
| 30 L/min | 30 SLPM |
| 32 L/min | 32 SLPM |
| 40 L/min | 40 SLPM |
| 50 L/min | 50 SLPM |
| 60 L/min | 60 SLPM |
| 85 L/min | 85 SLPM |
| 100 L/min | 100 SLPM |
| 200 L/min | 200 SLPM |
| 500 L/min | 500 SLPM |
| 1000 L/min | 1000 SLPM |
Where it's used
Actual flows from rotameters or volumetric meters are converted to SLPM to compare with mass flow controllers or gas-consumption specifications.
Liter per Minute to other flow rate units
| Conversion | 1 L/min equals |
|---|---|
| liter per minute to cubic meter per second | 0.00001666666667 m³/s |
| liter per minute to cubic meter per hour | 0.06 m³/h |
| liter per minute to liter per second | 0.01666666667 L/s |
| liter per minute to cubic centimeter per second | 16.66666667 cm³/s |
| liter per minute to cubic centimeter per minute | 1000 cm³/min |
| liter per minute to sccm | 1000 sccm |
| liter per minute to SLPM | 1 SLPM |
| liter per minute to cubic foot per minute | 0.03531466672 CFM |
| liter per minute to US gallon per minute | 0.2641720524 GPM |
Frequently asked questions
How do I convert actual L/min to SLPM?
SLPM = L/min × (P_actual / P_ref) × (T_ref / T_actual), using absolute pressures and temperatures in kelvin.
How many SLPM are in 1 liter per minute?
1 L/min = 1 SLPM (reference conditions 0 °C and 101.325 kPa, with the gas at those conditions).
How do I convert liters per minute to SLPM?
Multiply the value in L/min by 1. For example, 15 L/min × 1 = 15 SLPM.
Is the L/min to SLPM conversion exact?
Yes. Both units are defined exactly, and 1 L/min is exactly 1 SLPM.
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre, minute).
- 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: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Liters per Minute to SLPM. Retrieved October 17, 2026, from https://scientificconverters.com/flow-rate/liters-per-minute-to-slpm/
IEEE
Scientific Converters, "Convert Liters per Minute to SLPM," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/flow-rate/liters-per-minute-to-slpm/