Quart (US) to Gallon (Imp)
1 qt = 0.20817 gal
Convert Quart (US) (qt) to Gallon (Imp) (gal) with engineering-grade precision. Instant results, formula, and reference table below.
1 Quart (US) ≈0.2081685462 Gallon (Imp)
How to convert Quart (US) to Gallon (Imp) (qt to gal)
Converting Quart (US)s to Gallon (Imp)s is critical for developers working with international data standards or scientific applications. This tool performs the calculation entirely on your client (browser) using JavaScript/WASM, ensuring zero latency and maximum privacy.
The Formula
1 qt = 0.208169 gal
Calculation Example
Let's say you want to convert 5 qt to gal:
- Input: 5 qt
- Calculation: 5 × 0.208169
- Result: 1.0408 gal
About the Quart (US) to Gallon (Imp) conversion
The conversion factor from Quart (US) (qt) to Gallon (Imp) (gal) is 0.20817, meaning 1 qt = 0.20817 gal and inversely 1 gal = 4.8038 qt. That makes the Gallon (Imp) the larger of the two units in the volume category, where the SI base unit is the liter. Every ratio here is derived from the SI/international definition rather than a rounded approximation, so results are stable across repeated conversions.
Need the reverse? Use the Gallon (Imp) to Quart (US) converter.
Frequently Asked Questions
How do I convert Quart (US) to Gallon (Imp)?
To convert Quart (US) to Gallon (Imp), you need to multiply the qt value by 0.208169.
What is the formula for qt to gal?
The simple formula is: gal = qt × 0.208169.
Which is bigger: Quart (US) or Gallon (Imp)?
A Gallon (Imp) is bigger. One Gallon (Imp) is equal to approx 4.8038 Quart (US)s.
How many Quart (US)s are in one Gallon (Imp)?
There are approximately 4.80380 Quart (US)s in one Gallon (Imp).
Quick Conversion Table
| qt | gal |
|---|---|
| 1 | 0.2082 |
| 5 | 1.0408 |
| 10 | 2.0817 |
| 20 | 4.1634 |
| 50 | 10.4084 |
| 100 | 20.8169 |