One barrel per day is exactly 1.75 US gallons per hour, so converting barrels per day to US gallons per hour is a single multiplication. Enter any figure and the result appears as you type — the arithmetic runs in your browser, so nothing is sent anywhere.
The unit oil production is reported in worldwide. Used for fuel burn and small pumps.
Standard versus actual volume. Gas flow in CFM depends on pressure and temperature, which is why compressor ratings say SCFM and specify the reference conditions. Converting the number is exact; comparing two ratings measured at different conditions is not. Below the calculator there is a step table for the values people look up most, and a second table putting real volumetric flow figures into US gallons per hour so the number you get has something to be compared against.
The formula
barrels per day- The amount you are converting, in barrels per day
1.7499999999- The exact number of US gallons per hour in one barrel per day
US gallons per hour- The converted result
How it works, step by step
- Enter the value in barrels per day.
- It is multiplied by 1.7499999999, the exact factor between the two units.
- The answer is shown in US gallons per hour, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A garden hose: 163 bbl/d in US gallons per hour
A garden hose comes to about 163 bbl/d. Multiplying by the factor: 163 × 1.75 = 285.25 GPH. Dividing the answer back by 1.75 returns the figure you started with, which is the quickest way to check you have the factor the right way up.
A dripping tap: 0.0543 bbl/d in US gallons per hour
At 0.0543 bbl/d (a dripping tap), the same quantity in US gallons per hour is 0.0543 × 1.75 = 0.095025 GPH. One barrel per day is 1.75 US gallons per hour, so the numbers grow as expected.
How to read your score
Frequently asked questions
How many US gallons per hour are in one barrel per day?
Exactly 1.7499999999. Every figure on this page is that one number multiplied by your input, so the only rounding is at the display step.
What is the formula to convert barrels per day to US gallons per hour?
US gallons per hour = barrels per day × 1.7499999999. Reversed, barrels per day = US gallons per hour ÷ 1.7499999999, which is the same as multiplying by 0.57142857146.
Which is the bigger unit, the barrel per day or the US gallon per hour?
The barrel per day. One barrel per day equals 1.75 US gallons per hour.
What does this quantity actually measure?
Both units measure volumetric flow. That is why a single factor is enough: there is no temperature offset and no material property involved, unlike conversions that cross between different quantities.
What is a barrel per day?
The unit oil production is reported in worldwide.
What is a US gallon per hour?
Used for fuel burn and small pumps.
Why does my answer differ from another converter?
Almost always because the other tool rounded the factor before multiplying. This page keeps full double precision through the calculation and rounds only for display, and it prints the factor it used so you can see where any difference came from.
Is there a quick way to do bbl/d to GPH in my head?
Plenty of people do this in their head: multiply by 1.7 instead of using the exact factor 1.75. At 100 that shortcut gives 170 US gallons per hour, off by 5 US gallons per hour or about 2.86%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Barrels Per Day to US gallons per hour reference tables
| Barrels Per Day | Us Gallons Per Hour |
|---|---|
| 0.5 bbl/d | 0.875 GPH |
| 1 bbl/d | 1.75 GPH |
| 2 bbl/d | 3.5 GPH |
| 3 bbl/d | 5.25 GPH |
| 5 bbl/d | 8.75 GPH |
| 10 bbl/d | 17.5 GPH |
| 20 bbl/d | 35 GPH |
| 25 bbl/d | 43.75 GPH |
| 50 bbl/d | 87.5 GPH |
| 75 bbl/d | 131.25 GPH |
| 100 bbl/d | 175 GPH |
| 250 bbl/d | 437.5 GPH |
| 500 bbl/d | 875 GPH |
| 1000 bbl/d | 1750 GPH |
| 5000 bbl/d | 8750 GPH |
Exact factor: 1 barrel per day = 1.7499999999 US gallons per hour.
| Quantity | bbl/d | GPH |
|---|---|---|
| A dripping tap | 0.05434 bbl/d | 0.0951 GPH |
| A bathroom tap | 54.34 bbl/d | 95.1 GPH |
| A shower head | 86.95 bbl/d | 152.2 GPH |
| A garden hose | 163 bbl/d | 285.3 GPH |
| A fire hydrant | 3.261e+04 bbl/d | 5.706e+04 GPH |
| The Thames at London | 3.532e+07 bbl/d | 6.182e+07 GPH |
Published reference values, converted with the same factor this page uses.