# Conversor de caudal

> Convierte L/min a gpm, gpm a L/min, cfm a m³/h y m³/h a L/s para bombas, fontanería y ventilación, con los valores exactos del galón estadounidense y el pie cúbico.

Versión interactiva: https://www.calcopenly.com/es/conversion/flow-rate-converter
Tema: Conversores de unidades

Flow rate is volume per time, and each unit here is a fixed number of cubic metres per second. The US gallon (3.785411784 L) and the cubic foot (28.316846592 L) are exact, so litres per minute, gallons per minute and cubic feet per minute convert with no rounding in the factors.

The default converts 10 L/min to 2.64 US gpm, close to the 2.5 gpm (9.46 L/min) of a standard US showerhead. Plumbers and pump buyers use L/min and gpm, fan and compressor ratings use cfm or m³/h, and river flows are reported in m³/s (cumecs).

The gallon here is the US gallon. An imperial gallon per minute is 4.54609 L/min, 20% more, so check which gallon a specification uses before converting it.

## Datos

- **Valor**: Un número en la unidad de origen, o acompañado de su propia unidad
- **De** (opciones: cubic metre per second (m³/s), cubic metre per hour (m³/h), litre per second (L/s), litre per minute (L/min), litre per hour (L/h), US gallon per minute (gal/min), cubic foot per minute (ft³/min))
- **A** (opciones: cubic metre per second (m³/s), cubic metre per hour (m³/h), litre per second (L/s), litre per minute (L/min), litre per hour (L/h), US gallon per minute (gal/min), cubic foot per minute (ft³/min))

## Resultados

- Valor convertido — resultado principal
- Conversión
- Factor de conversión
- Exactitud

## Fórmula

$$
\begin{gathered} x_{\text{to}} = x_{\text{from}} \times \dfrac{f_{\text{from}}}{f_{\text{to}}} \\ f = \text{one unit expressed in } \text{m³/s} \end{gathered}
$$

## Ejemplos resueltos

### 10 L/min in US gal/min

- Valor: 10 L/min
- De: litre per minute (L/min)
- A: US gallon per minute (gal/min)
- **Valor convertido: 2.6417205236 gal/min**
- Fuente de comprobación: 10 L ÷ 3.785411784 L = 1250000000/473176473 (Python 3.8 fractions from the legal definitions)

### 1 m³/s in L/s

- Valor: 1 m³/s
- De: cubic metre per second (m³/s)
- A: litre per second (L/s)
- **Valor convertido: 1,000 L/s**
- Fuente de comprobación: 1 m³ = 1000 L

### 1 cfm in L/min

- Valor: 1 ft³/min
- De: cubic foot per minute (ft³/min)
- A: litre per minute (L/min)
- **Valor convertido: 28.316846592 L/min**
- Fuente de comprobación: 1 ft³ = 0.3048³ m³ = 28.316846592 L (NIST HB 44 App. C)

### 1 m³/h in L/s

- Valor: 1 m³/h
- De: cubic metre per hour (m³/h)
- A: litre per second (L/s)
- **Valor convertido: 0.2777777778 L/s**
- **Exactitud: Definiciones exactas, decimal periódico**
- Fuente de comprobación: 1000 L / 3600 s = 5/18

## Preguntas

### How do I convert L/min to gpm?

Divide by 3.785411784, or multiply by 0.264172. 10 L/min is 2.64 US gpm and 20 L/min is 5.28 gpm. To go from US gpm to L/min, multiply by 3.785, so a 2.5 gpm showerhead runs at 9.46 L/min.

### How do I convert cfm to m³/h?

Multiply by 1.69901. A cubic foot is 0.028316846592 m³ and an hour is 60 minutes, so 1 cfm = 1.69901079552 m³/h exactly. A 100 cfm bathroom fan moves 169.9 m³/h, or 47.2 L/s. To go from m³/h to cfm, multiply by 0.588578.

### What is a normal shower flow rate?

The US EPA puts standard showerheads at 2.5 gallons per minute, 9.46 L/min, and requires WaterSense-labelled ones to use no more than 2.0 gpm, 7.57 L/min. A 10-minute shower at 2.5 gpm uses 25 gallons, or 94.6 litres. Timing how long your shower takes to fill a 1-litre jug gives your own figure: 6 seconds means 10 L/min.

### How do I convert m³/h to L/s?

Divide by 3.6. A cubic metre is 1,000 litres and an hour 3,600 seconds, so 1 m³/h = 1,000/3,600 = 0.2778 L/s, a repeating decimal. A pump rated at 36 m³/h delivers exactly 10 L/s, or 600 L/min.

### Is gpm in US or imperial gallons?

In this converter, US gallons: 1 gpm = 3.785411784 L/min. Imperial gallons per minute are 4.54609 L/min, 20% larger, and appear on equipment specified in imperial units. To convert an imperial figure, multiply it by 1.20095 to get US gpm before entering it.

### ¿Qué precisión tiene «Conversor de caudal»?

La precisión depende de tus datos y de los supuestos del método. El cálculo decimal usa 50 cifras significativas, pero las estimaciones, los métodos numéricos y los datos de origen pueden ser menos precisos; el redondeo mostrado no elimina esos límites. Ejemplos resueltos comprobados con fuentes independientes: 4. Por ejemplo, «10 L/min in US gal/min» se comprueba con 10 L ÷ 3.785411784 L = 1250000000/473176473 (Python 3.8 fractions from the legal definitions).

### ¿De dónde procede el método?

NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors; NIST Handbook 44, Appendix C — General tables of units of measurement.

## Fuentes

- [NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C — General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)