US fluid ounce to US liquid gallon
us fl oz
gal
Conversion History
| Conversion | Reuse | Delete |
|---|---|---|
| No conversion history to show. | ||
Quick Reference Table (US fluid ounce to US liquid gallon)
| US fluid ounce (us fl oz) | US liquid gallon (gal) |
|---|---|
| 0.5 | 0.00390624999998186459 |
| 1 | 0.00781249999996372918 |
| 1.5 | 0.01171874999994559377 |
| 8 | 0.06249999999970983342 |
| 12 | 0.09374999999956475013 |
| 16 | 0.12499999999941966684 |
| 32 | 0.24999999999883933367 |
About US fluid ounce (us fl oz)
The US fluid ounce (fl oz) is a unit of volume equal to approximately 29.574 milliliters, one sixteenth of a US liquid pint. It is the primary small-volume unit on US food labels, beverage cans, and pharmaceutical liquid measurements. A standard US soda can is 12 fl oz; a coffee shop "tall" is 12 fl oz; a standard shot is 1.5 fl oz. The US fluid ounce is distinct from the imperial fluid ounce (28.413 mL) and should not be confused with the ounce as a unit of mass.
A US soda can is 12 fl oz (355 mL). A US shot glass holds 1.5 fl oz (44 mL). A US water bottle is commonly 16.9 fl oz (500 mL).
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.
US fluid ounce – Frequently Asked Questions
What is the difference between a fluid ounce and an ounce?
A fluid ounce (fl oz) is a unit of volume; an ounce (oz) is a unit of mass/weight. One US fluid ounce of water happens to weigh approximately 1.04 avoirdupois ounces — close but not equal. For other liquids, the mass per fl oz varies with density.
How many fluid ounces are in a US cup?
There are exactly 8 US fluid ounces in one US cup (240 mL). A pint is 16 fl oz, a quart is 32 fl oz, and a gallon is 128 fl oz.
What is the difference between US and imperial fluid ounces?
A US fluid ounce is approximately 29.574 mL; an imperial (UK) fluid ounce is approximately 28.413 mL — about 4% smaller. A US pint (16 fl oz) is 473 mL while a UK pint (20 fl oz) is 568 mL, a 20% difference that significantly affects beverage serving sizes.
How many fluid ounces are in a standard water bottle?
The most common US bottled water size is 16.9 fl oz (500 mL). Other sizes include 8 fl oz (237 mL), 20 fl oz (591 mL), and 33.8 fl oz (1 liter).
How many fl oz are in a standard US wine pour?
A standard US restaurant wine pour is 5 fl oz (148 mL). A 750 mL wine bottle yields approximately 5 pours of 5 fl oz each.
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.