20 quarts (qt) is equal to 5 gallons (gal).
To convert quarts to gallons, you divide the number of quarts by 4 since there are 4 quarts in 1 gallon. So, 20 qt divided by 4 gives you 5 gal.
Conversion Tool
Result in gal:
Conversion Formula
The formula to convert quarts to gallons is:
Gallons = Quarts ÷ 4
Because 1 gallon contains exactly 4 quarts, you divide the number of quarts by 4 to get gallons. This works since gallons are a larger unit of volume, so it takes 4 quarts to make one gallon.
For example, converting 20 quarts:
- Start with 20 quarts
- Divide 20 by 4
- 20 ÷ 4 = 5 gallons
Conversion Example
- Convert 12 qt to gal:
- Take 12 quarts
- Divide 12 by 4
- Result is 3 gallons
- Convert 7 qt to gal:
- Start with 7 quarts
- 7 ÷ 4 = 1.75 gallons
- This means 7 quarts equals 1 gallon and 3 quarts leftover
- Convert 35 qt to gal:
- Take 35 quarts
- Divide by 4: 35 ÷ 4 = 8.75 gallons
- So 35 quarts equals 8 gallons and 3 quarts
- Convert 3 qt to gal:
- 3 ÷ 4 = 0.75 gallons
- Less than 1 gallon, this means 3 quarts is three quarters of a gallon
Conversion Chart
| Quarts (qt) | Gallons (gal) |
|---|---|
| -5.0 | -1.25 |
| -4.0 | -1.00 |
| -3.0 | -0.75 |
| -2.0 | -0.50 |
| -1.0 | -0.25 |
| 0.0 | 0.00 |
| 5.0 | 1.25 |
| 10.0 | 2.50 |
| 15.0 | 3.75 |
| 20.0 | 5.00 |
| 25.0 | 6.25 |
| 30.0 | 7.50 |
| 35.0 | 8.75 |
| 40.0 | 10.00 |
| 45.0 | 11.25 |
This chart shows quarts values in left column and their gallons equivalent on right. You can use it to quickly find how many gallons equals a certain number of quarts by looking across the table rows.
Related Conversion Questions
- How many gallons are in 20 quarts exactly?
- What is 20 qt converted to gallons in decimal form?
- Is 20 quarts more or less than 6 gallons?
- How do I convert 20 qt to gal without a calculator?
- What’s the quickest way to change 20 quarts into gallons?
- Does 20 quarts equal 5 gallons or 6 gallons?
- If I have 20 qt, how many gallons can I pour into a container?
Conversion Definitions
qt (quart): A quart is a unit of volume in the US customary and imperial systems. It equals one fourth of a gallon or two pints. Quarts are often used to measure liquids like milk or oil. One quart contains 32 fluid ounces in the US system.
gal (gallon): A gallon is a larger volume unit, used in US and UK measurement systems. The US liquid gallon equals 128 fluid ounces or 4 quarts. Gallons are commonly used for measuring fuel, milk, and other liquid commodities.
Conversion FAQs
Can quarts be negative when converting to gallons?
Yes, negative quarts can represent a decrease or removal of volume. When converted, negative values divided by 4 will give negative gallons. For example, -8 quarts equals -2 gallons, meaning 2 gallons less than zero.
Why divide quarts by 4 to get gallons?
Because 1 gallon consists exactly 4 quarts, dividing by 4 reduces the quart value to its equivalent in gallons. This ratio is fixed by definition of the units, so the formula reflects that relationship.
Is the quart to gallon conversion same in UK and US?
No, UK (imperial) and US quarts and gallons differ slightly. US gallon contains 4 US quarts, but UK gallon and quart have different volumes. The conversion here refers to US measurements, so care must be taken if working with UK units.
How precise is the conversion from quarts to gallons?
The conversion is exact because 4 quarts always equal 1 gallon. However, rounding decimals in intermediate steps can cause slight variations. Using the exact division by 4 keeps results accurate.
Can I convert quarts to gallons without a calculator?
Yes, by remembering that 4 quarts make 1 gallon, you can divide quarts by 4 mentally or using simple division. For example, 16 quarts is 4 gallons because 16 ÷ 4 = 4.