Gallons to barrels (US beer barrels)
Divide US gallons by 31 to get US beer barrels. 100 gallons is 3.2258 barrels, and a 15.5 gallon half-barrel keg is exactly 0.5. Type any figure below; it converts as you type and nothing leaves your browser.
100 US gallons = 3.2258 US beer barrels (31 gal)
| US gallons | 100 |
| US beer barrels (31 gal) | 3.2258 |
| Liters | 378.54 |
| Cases, 24 x 12 oz | 44.44 |
Runs in your browser; nothing you type is sent anywhere. Arithmetic for your records, not tax advice.
Gallons to barrels table
| US gallons | US beer barrels | Half-barrel kegs |
|---|---|---|
| 1 | 0.0323 | 0.06 |
| 5 | 0.1613 | 0.32 |
| 10 | 0.3226 | 0.65 |
| 15.5 | 0.5 | 1 |
| 31 | 1 | 2 |
| 50 | 1.6129 | 3.23 |
| 62 | 2 | 4 |
| 100 | 3.2258 | 6.45 |
| 155 | 5 | 10 |
| 200 | 6.4516 | 12.9 |
| 310 | 10 | 20 |
| 500 | 16.129 | 32.26 |
| 620 | 20 | 40 |
| 1,000 | 32.2581 | 64.52 |
| 2,000 | 64.5161 | 129.03 |
| 3,100 | 100 | 200 |
| 5,000 | 161.2903 | 322.58 |
| 10,000 | 322.5806 | 645.16 |
Formula
barrels = gallons / 31. Round only at the end: if you round each batch to
two decimals and then add a year of batches, the total drifts. Keep gallons in the log and convert the period total.
Which barrel?
Three different "barrels" turn up in search results, and mixing them up is the most common conversion mistake. This site always means the US beer barrel of 31 US gallons, the one used for beer production and federal excise records (27 CFR 25.11). An oil barrel is 42 US gallons. A US fluid barrel, used for some other liquids, is 31.5 US gallons.
| Barrel | Gallons per barrel | 100 US gallons is |
|---|---|---|
| US beer barrel | 31 | 3.2258 bbl |
| US fluid barrel | 31.5 | 3.1746 bbl |
| Oil barrel | 42 | 2.381 bbl |
Questions
How many gallons are in a barrel of beer?
A US beer barrel is 31 US gallons. That is the barrel used for beer production and federal excise records.
How many barrels is 1,000 gallons of beer?
1,000 / 31 = 32.2581 US beer barrels.