Gallon (US)/Hour to Cubic Meter/Hour Converter

Flow Rate Converter

14 units available

Decimals:

From

To

0.003785

1 gph = 0.003785 m³/h

Formula:

m³/h = gph × 0.0037854118

With your value: 1 gph = 0.00378541 m³/h

Other Gallon (US)/Hour to Cubic Meter/Hour conversions

2 gph to m³/h 3 gph to m³/h 4 gph to m³/h 5 gph to m³/h 6 gph to m³/h 7 gph to m³/h 8 gph to m³/h

Gallon (US)/Hour to Cubic Meter/Hour Conversion Table

Gallon (US)/Hour (gph)	Cubic Meter/Hour (m³/h)
0.5	0.001893
1	0.003785
2	0.007571
5	0.018927
10	0.037854
15	0.056781
20	0.075708
25	0.094635
50	0.189271
100	0.378541
250	0.946353
500	1.892706
1000	3.785412

Cubic Meter/Hour to Gallon (US)/Hour Conversion Table

Cubic Meter/Hour (m³/h)	Gallon (US)/Hour (gph)
0.5	132.086026
1	264.172052
2	528.344105
5	1,320.860262
10	2,641.720524
15	3,962.580787
20	5,283.441049
25	6,604.301311
50	13,208.602622
100	26,417.205244
250	66,043.01311
500	132,086.026221
1000	264,172.052442

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Gallon (US)/Hour (gph)

Flow Rate

Exact conversion

Derived quantity: a defined volume divided by a defined time interval (m³/s). All listed units are exact multiples of the cubic metre per second.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

Cubic Meter/Hour (m³/h)

Flow Rate

Exact conversion

Derived quantity: a defined volume divided by a defined time interval (m³/s). All listed units are exact multiples of the cubic metre per second.

Source: ISO 80000, Quantities and units (all parts)

International Organization for Standardization · Reviewed 2026-07-01

How to Convert Gallon (US)/Hour to Cubic Meter/Hour

To convert from Gallon (US)/Hour (gph) to Cubic Meter/Hour (m³/h), multiply the value by 0.0037854118.

Formula: m³/h = gph × 0.0037854118

Reverse: gph = m³/h × 264.1720524419

Step-by-Step Example

Start with your value in Gallon (US)/Hour. For example: 5 gph
Multiply by the conversion factor: 5 x 0.0037854118
The result is: 0.018927 m³/h

About Gallon (US)/Hour

The gallon (us)/hour (gph) is a unit of flow rate. One gallon (us)/hour equals 1.051503 × 10^-6 base units. UnitConvertLab converts it against every other flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: flow rate calculations, engineering and science, education.

About Cubic Meter/Hour

The cubic meter/hour (m³/h) is a unit of flow rate. One cubic meter/hour equals 0.0002777777778 base units. UnitConvertLab converts it against every other flow rate unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: flow rate calculations, engineering and science, education.

Frequently Asked Questions

How many Cubic Meter/Hour are in 1 Gallon (US)/Hour?

There are exactly 0.0037854118 Cubic Meter/Hour in 1 Gallon (US)/Hour. This means the conversion factor from Gallon (US)/Hour to Cubic Meter/Hour is 0.0037854118.

What is the formula to convert Gallon (US)/Hour to Cubic Meter/Hour?

The formula to convert Gallon (US)/Hour to Cubic Meter/Hour is: m³/h = gph × 0.0037854118. For example, to convert 10 Gallon (US)/Hour to Cubic Meter/Hour, you would multiply 10 by 0.0037854118.

What is a Gallon (US)/Hour?