ConvBolt — Unit ConverterUS gallons to US quarts Converter
Converting US gallons to US quarts is a multiplication by a fixed factor: 1 gal = 4 qt. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one us gallon works out to 4 qt, the us quart is the larger unit of the two: a figure given in us quart always carries a larger number than the same measurement in us gallon. A chart drawn in gal can hide that, so check which label the axis uses before you compare two readings.
Kitchen and workshop measuring are where this pair comes up: a jug marked in US gallons alongside a recipe or container printed in US quarts is the classic case, and it is why the two labels rarely agree to the eye.
The conversion factor used here is 4 qt per us gallon (0 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 gal a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 0.25 gal per qt, the exact reciprocal, so a round trip through both pages returns your original number.
US gallons to US quarts formula
Use this formula to convert any us gallon value to US quarts:
Worked example: 100 gal × 4 = 400 qt.
US gallons to US quarts conversion table
| US gallons (gal) | US quarts (qt) |
|---|---|
| 0.5 gal | 2 qt |
| 1 gal | 4 qt |
| 2 gal | 8 qt |
| 5 gal | 20 qt |
| 10 gal | 40 qt |
| 20 gal | 80 qt |
| 50 gal | 200 qt |
| 100 gal | 400 qt |
| 500 gal | 2000 qt |
| 1000 gal | 4000 qt |
How to convert US gallons to US quarts
Multiply the us gallon value by 4 to get the equivalent in US quarts. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the US quarts to US gallons converter instead of dividing by hand; both pages use the same source factors. For every other gal conversion in one place, see the gal conversion hub.
Frequently asked questions
How many US quarts are in 1 us gallon?
1 us gallon = 4 qt.
What is 100 US gallons in US quarts?
100 gal = 400 qt.
Is converting US gallons to US quarts the same as US quarts to US gallons?
No — the direction changes the multiplier. The reverse conversion (1 qt = 0.25 gal) is on the US quarts to US gallons page.
Related conversions
Try the ConvBolt Unit Converter for any other volume unit, browse the Volume conversions, or read our conversion guides.