US Quarts to UK Quarts (qt to imp qt) Converter
1 US quart (qt) = 0.832674 UK quarts (imp qt). To convert US quarts to UK quarts, multiply by 0.832674: 25 qt × 0.832674 = 20.8169 imp qt.
Quick facts
- 1 qt = 0.832674 imp qt
- 1 imp qt = 1.20095 qt
- Formula: imp qt = qt × 0.832674
- Quick estimate: multiply by about 0.83
How to convert US quarts to UK quarts
- Start with your measurement in US quarts.
- Multiply it by 0.832674 (the number of UK quarts in one US quart).
- Round the answer to a sensible number of decimal places.
Worked example: 25 qt × 0.832674 = 20.8169 imp qt.
To convert UK quarts back to US quarts, multiply by 1.20095, or divide by 0.832674.
Source: NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units).
US Quarts to UK Quarts conversion table
| US Quarts [qt] | UK Quarts [imp qt] |
|---|---|
| 0.01 qt | 0.0083267418 imp qt |
| 0.1 qt | 0.0832674185 imp qt |
| 1 qt | 0.8326741846 imp qt |
| 2 qt | 1.6653483693 imp qt |
| 3 qt | 2.4980225539 imp qt |
| 5 qt | 4.1633709231 imp qt |
| 10 qt | 8.3267418463 imp qt |
| 20 qt | 16.6534836926 imp qt |
| 50 qt | 41.6337092314 imp qt |
| 100 qt | 83.2674184629 imp qt |
| 1000 qt | 832.674184629 imp qt |
qt to imp qt chart from 1 to 100
- 1 qt 0.832674 imp qt
- 2 qt 1.66535 imp qt
- 3 qt 2.49802 imp qt
- 4 qt 3.3307 imp qt
- 5 qt 4.16337 imp qt
- 6 qt 4.99605 imp qt
- 7 qt 5.82872 imp qt
- 8 qt 6.66139 imp qt
- 9 qt 7.49407 imp qt
- 10 qt 8.32674 imp qt
- 11 qt 9.15942 imp qt
- 12 qt 9.99209 imp qt
- 13 qt 10.8248 imp qt
- 14 qt 11.6574 imp qt
- 15 qt 12.4901 imp qt
- 16 qt 13.3228 imp qt
- 17 qt 14.1555 imp qt
- 18 qt 14.9881 imp qt
- 19 qt 15.8208 imp qt
- 20 qt 16.6535 imp qt
- 25 qt 20.8169 imp qt
- 30 qt 24.9802 imp qt
- 35 qt 29.1436 imp qt
- 40 qt 33.307 imp qt
- 45 qt 37.4703 imp qt
- 50 qt 41.6337 imp qt
- 55 qt 45.7971 imp qt
- 60 qt 49.9605 imp qt
- 65 qt 54.1238 imp qt
- 70 qt 58.2872 imp qt
- 75 qt 62.4506 imp qt
- 80 qt 66.6139 imp qt
- 85 qt 70.7773 imp qt
- 90 qt 74.9407 imp qt
- 95 qt 79.104 imp qt
- 100 qt 83.2674 imp qt
UK Quarts to US Quarts conversion table
| UK Quarts [imp qt] | US Quarts [qt] |
|---|---|
| 0.01 imp qt | 0.0120094993 qt |
| 0.1 imp qt | 0.1200949926 qt |
| 1 imp qt | 1.2009499255 qt |
| 2 imp qt | 2.401899851 qt |
| 3 imp qt | 3.6028497765 qt |
| 5 imp qt | 6.0047496275 qt |
| 10 imp qt | 12.009499255 qt |
| 20 imp qt | 24.0189985101 qt |
| 50 imp qt | 60.0474962752 qt |
| 100 imp qt | 120.0949925505 qt |
| 1000 imp qt | 1200.9499255049 qt |
US Quarts vs UK Quarts
| US Quart | UK Quart | |
|---|---|---|
| Symbol | qt | imp qt |
| Equals | 1 qt = 0.832674 imp qt | 1 imp qt = 1.20095 qt |
What is a US quart?
A US customary unit equal to 2 pints or 1/4 gallon. Used in the US for milk, motor oil, and cooking.
What is a UK quart?
A UK imperial unit equal to 2 imperial pints. Found in older UK and Canadian recipes and measuring jugs.
Who Converts US Quarts to UK Quarts?
US quarts are used mainly in the United States, while UK quarts are used mainly in the UK (pub pints, fuel economy in mpg) and older Canadian recipes. Canada and the UK use a mix of metric and imperial units while the US uses customary units, so students, engineers, travellers and shoppers in all three countries switch between them often.
How big is 1 qt compared with 1 imp qt?
1 qt is only 0.832674 of 1 imp qt: you need 1.20095 US quarts to make 1 imp qt, so the number gets smaller when you convert. The two are close in size: 1 imp qt is about 20.1% larger than 1 qt, which is easy to miss.
US Quarts to UK Quarts without a calculator
- In your head: multiply by 0.8 (about 3.9% off). 1 qt × 0.8 ≈ 0.8 imp qt.
- Closer estimate: multiply by 0.83 (within 0.32%).
- Or divide: divide by 1.2 (within 0.079%), which is often easier than multiplying by a small decimal.
- Fraction trick: multiply by 5, then divide by 6 (within 0.079%).
Real-world qt to imp qt examples
| Example | US Quarts | UK Quarts |
|---|---|---|
| A quart of milk | 1 qt | 0.832674 imp qt |
| An engine oil change | 5 qt | 4.16337 imp qt |
| An older recipe measure | 1.20095 qt | 1 imp qt |
| Half an imperial gallon | 2.4019 qt | 2 imp qt |
How exact is the qt to imp qt factor?
The factor is exact by definition, so any error comes only from rounding. Round the final answer, not the factor, and match the precision of the number you started with.
Mistakes to avoid
- US and imperial (UK) measures share names but not sizes. Check which one a recipe, label or fuel figure uses before converting.
What people convert next
Related conversions you may need next: uk quarts to liters and us quarts to liters. The full volume converter lists every unit.
On pakmath.com, the scientific calculator is a useful next step, as is the percentage calculator; Adzita offers a free calorie calculator.
Frequently asked questions
How many UK quarts are in a US quart?
There are 0.832674 UK quarts in 1 US quart (1 qt = 0.8326741846 imp qt).
How many US quarts are in a UK quart?
There are 1.20095 US quarts in 1 UK quart (1 imp qt = 1.2009499255 qt).
How do I convert US quarts to UK quarts?
Multiply the number of US quarts by 0.832674. For example, 10 qt × 0.832674 = 8.32674 imp qt. To convert back, multiply by 1.20095.
What is 10 qt in UK quarts?
10 qt = 8.32674 imp qt.
What is 100 qt in UK quarts?
100 qt = 83.2674 imp qt.
Is the qt to imp qt conversion exact?
Yes. The factor comes from the official definitions of both units (NIST Handbook 44, Appendix C, and NIST SP 811 (US customary volume units)). Results are shown to up to 10 decimal places; round them to suit your purpose.
What is an easy way to convert US quarts to UK quarts?
In your head: multiply by 0.8 (about 3.9% off). 1 qt × 0.8 ≈ 0.8 imp qt.
How many UK quarts is 1 qt (a quart of milk)?
1 qt = 0.832674 imp qt.
How many US quarts is half an imperial gallon (2 imp qt)?
2 imp qt = 2.4019 qt.
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