Type a value in US gallons per minute to get liters per minute instantly, or type in the liters per minute box to convert back. The formula with your number, related units and full tables are below.
GPM
L/min
Step-by-step calculation
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How to use the GPM to LPM Converter
Type a value in the Gallons per minute box. The liters per minute result appears instantly.
Going the other way? Type in the Liters per minute box, or press the ⇄ swap button.
Set the precision with the decimal places menu.
Check the working in the step-by-step box, then press Copy result or click any row in the tables below.
Gallons per minute to liters per minute formula
L/min = GPM × 3.785411784
Take the value in US gallons per minute.
Multiply it by 3.785411784 (the number of liters per minute in one US gallon per minute).
Example: 2.5 GPM × 3.785411784 = 9.46353 L/min.
Reverse formula (liters per minute to US gallons per minute): GPM = L/min ÷ 3.785411784. Example: 18.9271 L/min ÷ 3.785411784 = 5 GPM.
Quick mental estimate: multiply by about 3.8. For exact answers use the converter above.
GPM to L/min conversion table (1–100)
Click any row to load it into the converter.
Gallons per minute to liters per minute
Gallons per minute
Liters per minute
1 GPM
3.79 L/min
2 GPM
7.57 L/min
3 GPM
11.36 L/min
4 GPM
15.14 L/min
5 GPM
18.93 L/min
6 GPM
22.71 L/min
7 GPM
26.5 L/min
8 GPM
30.28 L/min
9 GPM
34.07 L/min
10 GPM
37.85 L/min
11 GPM
41.64 L/min
12 GPM
45.42 L/min
13 GPM
49.21 L/min
14 GPM
53 L/min
15 GPM
56.78 L/min
16 GPM
60.57 L/min
17 GPM
64.35 L/min
18 GPM
68.14 L/min
19 GPM
71.92 L/min
20 GPM
75.71 L/min
21 GPM
79.49 L/min
22 GPM
83.28 L/min
23 GPM
87.06 L/min
24 GPM
90.85 L/min
25 GPM
94.64 L/min
26 GPM
98.42 L/min
27 GPM
102.21 L/min
28 GPM
105.99 L/min
29 GPM
109.78 L/min
30 GPM
113.56 L/min
31 GPM
117.35 L/min
32 GPM
121.13 L/min
33 GPM
124.92 L/min
34 GPM
128.7 L/min
35 GPM
132.49 L/min
36 GPM
136.27 L/min
37 GPM
140.06 L/min
38 GPM
143.85 L/min
39 GPM
147.63 L/min
40 GPM
151.42 L/min
41 GPM
155.2 L/min
42 GPM
158.99 L/min
43 GPM
162.77 L/min
44 GPM
166.56 L/min
45 GPM
170.34 L/min
46 GPM
174.13 L/min
47 GPM
177.91 L/min
48 GPM
181.7 L/min
49 GPM
185.49 L/min
50 GPM
189.27 L/min
51 GPM
193.06 L/min
52 GPM
196.84 L/min
53 GPM
200.63 L/min
54 GPM
204.41 L/min
55 GPM
208.2 L/min
56 GPM
211.98 L/min
57 GPM
215.77 L/min
58 GPM
219.55 L/min
59 GPM
223.34 L/min
60 GPM
227.12 L/min
61 GPM
230.91 L/min
62 GPM
234.7 L/min
63 GPM
238.48 L/min
64 GPM
242.27 L/min
65 GPM
246.05 L/min
66 GPM
249.84 L/min
67 GPM
253.62 L/min
68 GPM
257.41 L/min
69 GPM
261.19 L/min
70 GPM
264.98 L/min
71 GPM
268.76 L/min
72 GPM
272.55 L/min
73 GPM
276.34 L/min
74 GPM
280.12 L/min
75 GPM
283.91 L/min
76 GPM
287.69 L/min
77 GPM
291.48 L/min
78 GPM
295.26 L/min
79 GPM
299.05 L/min
80 GPM
302.83 L/min
81 GPM
306.62 L/min
82 GPM
310.4 L/min
83 GPM
314.19 L/min
84 GPM
317.97 L/min
85 GPM
321.76 L/min
86 GPM
325.55 L/min
87 GPM
329.33 L/min
88 GPM
333.12 L/min
89 GPM
336.9 L/min
90 GPM
340.69 L/min
91 GPM
344.47 L/min
92 GPM
348.26 L/min
93 GPM
352.04 L/min
94 GPM
355.83 L/min
95 GPM
359.61 L/min
96 GPM
363.4 L/min
97 GPM
367.18 L/min
98 GPM
370.97 L/min
99 GPM
374.76 L/min
100 GPM
378.54 L/min
Liters per minute to gallons per minute
Liters per minute
Gallons per minute
1 L/min
0.26 GPM
2 L/min
0.53 GPM
3 L/min
0.79 GPM
4 L/min
1.06 GPM
5 L/min
1.32 GPM
6 L/min
1.59 GPM
7 L/min
1.85 GPM
8 L/min
2.11 GPM
9 L/min
2.38 GPM
10 L/min
2.64 GPM
11 L/min
2.91 GPM
12 L/min
3.17 GPM
13 L/min
3.43 GPM
14 L/min
3.7 GPM
15 L/min
3.96 GPM
16 L/min
4.23 GPM
17 L/min
4.49 GPM
18 L/min
4.76 GPM
19 L/min
5.02 GPM
20 L/min
5.28 GPM
21 L/min
5.55 GPM
22 L/min
5.81 GPM
23 L/min
6.08 GPM
24 L/min
6.34 GPM
25 L/min
6.6 GPM
26 L/min
6.87 GPM
27 L/min
7.13 GPM
28 L/min
7.4 GPM
29 L/min
7.66 GPM
30 L/min
7.93 GPM
31 L/min
8.19 GPM
32 L/min
8.45 GPM
33 L/min
8.72 GPM
34 L/min
8.98 GPM
35 L/min
9.25 GPM
36 L/min
9.51 GPM
37 L/min
9.77 GPM
38 L/min
10.04 GPM
39 L/min
10.3 GPM
40 L/min
10.57 GPM
41 L/min
10.83 GPM
42 L/min
11.1 GPM
43 L/min
11.36 GPM
44 L/min
11.62 GPM
45 L/min
11.89 GPM
46 L/min
12.15 GPM
47 L/min
12.42 GPM
48 L/min
12.68 GPM
49 L/min
12.94 GPM
50 L/min
13.21 GPM
51 L/min
13.47 GPM
52 L/min
13.74 GPM
53 L/min
14 GPM
54 L/min
14.27 GPM
55 L/min
14.53 GPM
56 L/min
14.79 GPM
57 L/min
15.06 GPM
58 L/min
15.32 GPM
59 L/min
15.59 GPM
60 L/min
15.85 GPM
61 L/min
16.11 GPM
62 L/min
16.38 GPM
63 L/min
16.64 GPM
64 L/min
16.91 GPM
65 L/min
17.17 GPM
66 L/min
17.44 GPM
67 L/min
17.7 GPM
68 L/min
17.96 GPM
69 L/min
18.23 GPM
70 L/min
18.49 GPM
71 L/min
18.76 GPM
72 L/min
19.02 GPM
73 L/min
19.28 GPM
74 L/min
19.55 GPM
75 L/min
19.81 GPM
76 L/min
20.08 GPM
77 L/min
20.34 GPM
78 L/min
20.61 GPM
79 L/min
20.87 GPM
80 L/min
21.13 GPM
81 L/min
21.4 GPM
82 L/min
21.66 GPM
83 L/min
21.93 GPM
84 L/min
22.19 GPM
85 L/min
22.45 GPM
86 L/min
22.72 GPM
87 L/min
22.98 GPM
88 L/min
23.25 GPM
89 L/min
23.51 GPM
90 L/min
23.78 GPM
91 L/min
24.04 GPM
92 L/min
24.3 GPM
93 L/min
24.57 GPM
94 L/min
24.83 GPM
95 L/min
25.1 GPM
96 L/min
25.36 GPM
97 L/min
25.62 GPM
98 L/min
25.89 GPM
99 L/min
26.15 GPM
100 L/min
26.42 GPM
Common values
Gallons per minute
Liters per minute
Example
0.5 GPM
1.89 L/min
Bathroom faucet (approx.)
1.5 GPM
5.68 L/min
Low-flow faucet
1.8 GPM
6.81 L/min
Low-flow shower
2 GPM
7.57 L/min
2 GPM
2.5 GPM
9.46 L/min
Standard showerhead (US max)
5 GPM
18.93 L/min
Garden hose (approx.)
10 GPM
37.85 L/min
10 GPM
20 GPM
75.71 L/min
20 GPM
50 GPM
189.27 L/min
50 GPM
About gallons per minute and liters per minute
Gallons per minute (GPM). US gallons per minute (GPM) measure flow rate for pumps, faucets, showerheads and irrigation. 1 GPM is about 3.785 liters per minute.
Liters per minute (L/min). Liters per minute (L/min) is the metric flow-rate unit for pumps, taps and showers.
Frequently asked questions
How many liters per minute are in a US gallon per minute?
One US gallon per minute equals 3.78541 liters per minute.
How do you convert US gallons per minute to liters per minute?
Multiply the number of US gallons per minute by 3.785411784. For example, 2.5 GPM × 3.785411784 = 9.46353 L/min.
What is 5 US gallons per minute in liters per minute?
5 GPM is 18.9271 L/min (garden hose (approx.)).
How much is 20 US gallons per minute in liters per minute?
20 US gallons per minute equals 75.7082 liters per minute.
How do I convert liters per minute back to US gallons per minute?
Divide by 3.785411784, or press the ⇄ swap button above. For example, 18.9271 L/min ÷ 3.785411784 = 5 GPM.
Which gallon is used for GPM?
US gallons (3.785 L). In the UK, flow is sometimes quoted in imperial gallons per minute, which are about 20% larger.