One barrel per day is exactly 0.02916666667 US gallons per minute, so converting barrels per day to US gallons per minute 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. The US standard for pumps, irrigation and fixtures.
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 minute 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
0.0291666666651- The exact number of US gallons per minute in one barrel per day
US gallons per minute- The converted result
How it works, step by step
- Enter the value in barrels per day.
- It is multiplied by 0.0291666666651, the exact factor between the two units.
- The answer is shown in US gallons per minute, with the reverse conversion beneath it.
- Check the reference table if you want a figure of comparable size.
Worked examples
A fire hydrant: 3.26e+04 bbl/d in US gallons per minute
A fire hydrant comes to about 3.26e+04 bbl/d. Multiplying by the factor: 3.26e+04 × 0.0291667 = 950.833 GPM. Dividing the answer back by 0.0291667 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 minute
Take a dripping tap, roughly 0.0543 bbl/d. The conversion is a single multiplication — 0.0543 × 0.0291667 — giving 0.00158375 GPM. Because the relationship is proportional, doubling the input doubles the answer to 0.0031675 GPM.
How to read your score
Frequently asked questions
How many US gallons per minute are in one barrel per day?
Exactly 0.0291666666651. 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 minute?
US gallons per minute = barrels per day × 0.0291666666651. Reversed, barrels per day = US gallons per minute ÷ 0.0291666666651, which is the same as multiplying by 34.2857142876.
Which is the bigger unit, the barrel per day or the US gallon per minute?
The US gallon per minute. One barrel per day is only 0.0291667 of a US gallon per minute, so it takes 34.2857 barrels per day to make one US gallon per minute.
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 minute?
The US standard for pumps, irrigation and fixtures.
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 GPM in my head?
Plenty of people do this in their head: divide by 34 instead of using the exact factor 0.02916666667. At 100 that shortcut gives 2.9411765 US gallons per minute, off by 0.02451 US gallons per minute or about 0.84%. Fine for a rough estimate, not fine for anything you are cutting to size or dosing.
Barrels Per Day to US gallons per minute reference tables
| Barrels Per Day | Us Gallons Per Minute |
|---|---|
| 0.5 bbl/d | 0.0145833 GPM |
| 1 bbl/d | 0.0291667 GPM |
| 2 bbl/d | 0.0583333 GPM |
| 3 bbl/d | 0.0875 GPM |
| 5 bbl/d | 0.145833 GPM |
| 10 bbl/d | 0.291667 GPM |
| 20 bbl/d | 0.583333 GPM |
| 25 bbl/d | 0.729167 GPM |
| 50 bbl/d | 1.45833 GPM |
| 75 bbl/d | 2.1875 GPM |
| 100 bbl/d | 2.91667 GPM |
| 250 bbl/d | 7.29167 GPM |
| 500 bbl/d | 14.5833 GPM |
| 1000 bbl/d | 29.1667 GPM |
| 5000 bbl/d | 145.833 GPM |
Exact factor: 1 barrel per day = 0.0291666666651 US gallons per minute.
| Quantity | bbl/d | GPM |
|---|---|---|
| A dripping tap | 0.05434 bbl/d | 0.001585 GPM |
| A bathroom tap | 54.34 bbl/d | 1.585 GPM |
| A shower head | 86.95 bbl/d | 2.536 GPM |
| A garden hose | 163 bbl/d | 4.755 GPM |
| A fire hydrant | 3.261e+04 bbl/d | 951 GPM |
| The Thames at London | 3.532e+07 bbl/d | 1.03e+06 GPM |
Published reference values, converted with the same factor this page uses.