US liquid gallon to Imperial pint
gal
imp pt
Conversion History
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|---|---|---|
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Quick Reference Table (US liquid gallon to Imperial pint)
| US liquid gallon (gal) | Imperial pint (imp pt) |
|---|---|
| 0.5 | 3.33069673851595546943 |
| 1 | 6.66139347703191093885 |
| 2 | 13.3227869540638218777 |
| 5 | 33.30696738515955469425 |
| 10 | 66.61393477031910938851 |
| 50 | 333.06967385159554694254 |
About US liquid gallon (gal)
The US liquid gallon is a unit of volume equal to 4 quarts, 8 pints, or 128 US fluid ounces, approximately 3.785 liters. It is the primary large liquid volume unit in the United States, used for fuel pricing at the pump, milk and juice packaging, and paint. US fuel economy is measured in miles per gallon (MPG). The US gallon is about 17% smaller than the UK imperial gallon (4.546 L), causing significant differences in fuel economy comparisons.
A gallon jug of milk is 3.785 L. Petrol (gasoline) is priced per US gallon at every US fuel station.
About Imperial pint (imp pt)
The imperial pint is a unit of volume equal to one eighth of an imperial gallon, approximately 568.3 milliliters (20 imperial fluid ounces). It is the standard serving size for draft beer and cider in the United Kingdom, Ireland, and Australia. Despite UK metrication, the pint survives as the legally mandated unit for selling draft beer and milk in UK pubs and shops. The imperial pint is notably 20% larger than the US liquid pint (473 mL).
A pint of beer in a UK or Irish pub is exactly 568 mL (1 imperial pint). A UK pint of milk is 568 mL.
US liquid gallon – Frequently Asked Questions
Why does the US still price fuel per gallon when the rest of the world uses liters?
US fuel infrastructure — pumps, tax law, pipeline contracts, and consumer expectations — is built around the gallon. Federal and state fuel taxes are levied per gallon; EPA fuel economy standards use miles per gallon; and consumers benchmark prices against a gallon reference ("$3 a gallon"). Switching to liters would require reprogramming every pump, rewriting tax code, and re-educating 330 million people who compare prices by the gallon. Canada made the switch in the 1970s during a broader metrication push, but the US never had the political will for a comprehensive changeover.
Why is the US gallon smaller than the UK gallon?
The US gallon (3.785 L) is based on the Queen Anne wine gallon of 1707 (231 cubic inches). The UK imperial gallon (4.546 L) was defined in 1824 as the volume of 10 pounds of water. The two systems diverged after US independence.
How does US MPG compare to L/100km?
To convert: L/100km = 235.2 ÷ MPG (US). A car achieving 30 MPG uses about 7.8 L/100km. UK MPG values are always higher than US MPG for the same car because the imperial gallon is larger.
How many gallons of water does a person drink per day?
Recommended daily water intake is about 2–3 liters (roughly 0.5–0.8 US gallons). The commonly cited "8 glasses a day" ≈ 64 fl oz ≈ 0.5 gallons ≈ 1.9 liters.
How many gallons does a car fuel tank hold?
Most US passenger cars have fuel tanks of 10–20 gallons (38–76 liters). Compact cars are typically 10–13 gallons; mid-size cars 14–17 gallons; SUVs and trucks 18–36 gallons.
Imperial pint – Frequently Asked Questions
How many milliliters is a UK pint?
One imperial (UK) pint equals exactly 568.26 mL (20 imperial fluid ounces). A UK pint glass holds just over half a liter.
Why is beer still sold by the pint in the UK?
The UK is legally permitted to sell draft beer and cider in pints under exemptions to metrication rules. The pint is a protected official supplementary unit for draft alcohol. Milk may also be sold in pints.
Is an Irish pint the same as a UK pint?
Yes, an Irish pint is an imperial pint — 568 mL. A pint at an Irish pub is 20 imperial fluid ounces, identical to a UK pint.
How does an Australian pint compare to a UK pint?
In Australian pubs, a "pint" is technically 568 mL, but serving sizes vary by state. In South Australia and Western Australia, a "pint" is actually 425 mL. Australian glassware terminology is notoriously inconsistent.
How many fluid ounces are in an imperial pint?
One imperial pint equals exactly 20 imperial fluid ounces. A US pint equals 16 US fluid ounces. The fluid ounce sizes also differ slightly (28.41 mL imperial vs 29.57 mL US), compounding the pint size difference.