21 Gallon (US)/Hour to Gallon (UK)/Minute
Quick answer
21 Gallon (US)/Hour (gph) equals
0.291436 gpm (UK)
To convert 21 Gallon (US)/Hours to Gallon (UK)/Minutes, multiply by 0.013877897. Therefore, 21 Gallon (US)/Hour (gph) equals 0.291436 Gallon (UK)/Minute (gpm (UK)).
Formula: gpm (UK) = gph × 0.013877897. Calculation: 21 × 0.013877897 = 0.291436 gpm (UK).
Convert Gallon (US)/Hour (gph) to Gallon (UK)/Minute (gpm (UK)) online with our free unit converter. In flow rate, 1 gph = 0.013878 gpm (UK). Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.
Worked example: converting Gallon (US)/Hour to Gallon (UK)/Minute
- Step 1 — start with the formula. gpm (UK) = gph × 0.013877897
- Step 2 — substitute your figure. 21 gph × 0.013877897
- Step 3 — read the result. 21 gph = 0.291436 gpm (UK)
- Step 4 — check it in reverse. gph = gpm (UK) × 72.0570272538 returns 21 gph, which matches the figure you started with.
Flow Rate Converter
14 units available
21 gph = 0.291436 gpm (UK)
Formula:
gpm (UK) = gph × 0.013877897With your value: 21 gph = 0.29143584 gpm (UK)
Other Gallon (US)/Hour to Gallon (UK)/Minute conversions
Gallon (US)/Hour to Gallon (UK)/Minute Conversion Table
| Gallon (US)/Hour (gph) | Gallon (UK)/Minute (gpm (UK)) |
|---|---|
| 0.5 | 0.006939 |
| 1 | 0.013878 |
| 2 | 0.027756 |
| 5 | 0.069389 |
| 10 | 0.138779 |
| 15 | 0.208168 |
| 20 | 0.277558 |
| 25 | 0.346947 |
| 50 | 0.693895 |
| 100 | 1.38779 |
| 250 | 3.469474 |
| 500 | 6.938948 |
| 1000 | 13.877897 |
Gallon (UK)/Minute to Gallon (US)/Hour Conversion Table
| Gallon (UK)/Minute (gpm (UK)) | Gallon (US)/Hour (gph) |
|---|---|
| 0.5 | 36.028514 |
| 1 | 72.057027 |
| 2 | 144.114055 |
| 5 | 360.285136 |
| 10 | 720.570273 |
| 15 | 1,080.855409 |
| 20 | 1,441.140545 |
| 25 | 1,801.425681 |
| 50 | 3,602.851363 |
| 100 | 7,205.702725 |
| 250 | 18,014.256813 |
| 500 | 36,028.513627 |
| 1000 | 72,057.027254 |
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
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
Gallon (UK)/Minute (gpm (UK))
Flow Rate
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 Gallon (UK)/Minute
To convert from Gallon (US)/Hour (gph) to Gallon (UK)/Minute (gpm (UK)), multiply the value by 0.013877897.
Formula: gpm (UK) = gph × 0.013877897
Reverse: gph = gpm (UK) × 72.0570272538
Step-by-Step Example
- Start with your value in Gallon (US)/Hour. For example: 5 gph
- Multiply by the conversion factor: 5 x 0.013877897
- The result is: 0.069389 gpm (UK)
Gallon (US)/Hour and Gallon (UK)/Minute Relationship
This calculation facilitates standardized conversion between recognized units of flow rate. Since 1 Gallon (US)/Hour represents a fraction of a Gallon (UK)/Minute (1 Gallon (UK)/Minute ≈ 72.057 Gallon (US)/Hours), the Gallon (UK)/Minute is the larger measurement interval. Understanding the relationship between Gallon (US)/Hour and Gallon (UK)/Minute is essential for accurate calculations in physics, engineering, commerce, and daily applications.
About Gallon (US)/Hour
The Gallon (US)/Hour (symbol: gph) is a recognized unit in the Standard measurement framework, utilized within flow rate applications for precision and standardized data representation.
Common uses of Gallon (US)/Hour: flow rate calculations, engineering and science, education.
About Gallon (UK)/Minute
The Gallon (UK)/Minute (symbol: gpm (UK)) is a recognized unit in the Standard measurement framework, utilized within flow rate applications for precision and standardized data representation.
Common uses of Gallon (UK)/Minute: flow rate calculations, engineering and science, education.
Frequently Asked Questions
- What is 21 Gallon (US)/Hour in Gallon (UK)/Minute?
- 21 Gallon (US)/Hour equals 0.291436 Gallon (UK)/Minute.
- How many Gallon (UK)/Minutes are in 1 Gallon (US)/Hour?
- There are exactly 0.013877897 Gallon (UK)/Minutes in 1 Gallon (US)/Hour. This means the conversion factor from Gallon (US)/Hour to Gallon (UK)/Minute is 0.013877897.
- What is the formula to convert Gallon (US)/Hour to Gallon (UK)/Minute?
- The formula to convert Gallon (US)/Hour to Gallon (UK)/Minute is: gpm (UK) = gph × 0.013877897. For example, to convert 10 Gallon (US)/Hours to Gallon (UK)/Minutes, you would multiply 10 by 0.013877897.
- What is a Gallon (US)/Hour?
- The Gallon (US)/Hour (symbol: gph) is a recognized unit in the Standard measurement framework, utilized within flow rate applications for precision and standardized data representation.
- What is a Gallon (UK)/Minute?
- The Gallon (UK)/Minute (symbol: gpm (UK)) is a recognized unit in the Standard measurement framework, utilized within flow rate applications for precision and standardized data representation.
- What are the common uses of Gallon (US)/Hour?
- The Gallon (US)/Hour is commonly used in flow rate calculations, engineering and science, education.
Related Flow Rate Conversions
Cite this page
UnitConvertLab. (2026). 21 Gallon (US)/Hour to Gallon (UK)/Minute. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/21-gph_us-to-gpm_uk