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Convert Imperial pints to US gallons

1 imperial pint is 0.15 gal. One imperial pint is exactly 0.150118740688 US gallons.

One imperial pint is 0.15011874 US gallons. To convert imperial pints to US gallons, multiply by 0.15011874; to go the other way, divide by 0.15011874 or multiply by 6.6613935. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130.

Factor checked against the defining standard · How we check

US gallons
0.15 gal
Imperial pints × 0.15011874
1 * 0.15011870.15 gal

1 imperial pint in every volume unit

1 imperial pint expressed in every volume unit
UnitValueExact factor
US teaspoons115.2911928 tsp× 115.291192848
US tablespoons38.43039762 tbsp× 38.4303976162
US fluid ounces19.21519881 fl oz× 19.2151988081
US cups2.401899851 cup× 2.40189985101
US pints1.200949926 pt× 1.2009499255
US quarts0.6004749628 qt× 0.600474962752
US gallons0.1501187407 gal× 0.150118740688
milliliters568.26125 ml× 568.26125
liters0.56826125 L× 0.56826125
imperial gallons0.125 gal (UK)× 0.125
imperial quarts0.5 qt (UK)× 0.5
imperial pints (as entered)1 pt (UK)—
imperial fluid ounces20 fl oz (UK)× 20
imperial gills4 gi (UK)× 4
cubic millimetres568,261.25 mm³× 568,261.25
cubic centimetres568.26125 cm³× 568.26125
cubic inches34.6774291 in³× 34.677429099
cubic feet0.02006795665 ft³× 0.0200679566545
cubic yards0.0007432576539 yd³× 0.00074325765387
cubic metres0.00056826125 m³× 0.00056826125

Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.

How do you convert imperial pints to US gallons? The converter and the working

  1. 1.Take the measurement in imperial pints.
  2. 2.Multiply by 0.15011874 — that is how many US gallons fit in one imperial pint.
  3. 3.To go back the other way, divide by 0.15011874, or multiply by 6.6613935.

Worked example: 25 imperial pints to US gallons

Formula
pt (UK) × 0.15011874 = gal
Arithmetic
25 × 0.15011874 = 3.75 gal
Answer
25 pt (UK) = 3.75 gal

The factor is rounded for display; the figure above is computed from the full value.

Imperial pints to US gallons conversion table

Imperial pints to US gallons conversion table
Imperial pintsUS gallons
1 pt (UK)0.15 gal
2 pt (UK)0.3 gal
3 pt (UK)0.45 gal
4 pt (UK)0.6 gal
5 pt (UK)0.75 gal
6 pt (UK)0.9 gal
7 pt (UK)1.05 gal
8 pt (UK)1.2 gal
9 pt (UK)1.35 gal
10 pt (UK)1.5 gal
12 pt (UK)1.8 gal
15 pt (UK)2.25 gal
20 pt (UK)3 gal
25 pt (UK)3.75 gal
50 pt (UK)7.51 gal
100 pt (UK)15.01 gal
200 pt (UK)30.02 gal
300 pt (UK)45.04 gal
500 pt (UK)75.06 gal
1000 pt (UK)150.12 gal
2000 pt (UK)300.24 gal
5000 pt (UK)750.59 gal
10000 pt (UK)1,501.19 gal

What is an imperial pint?

An eighth of an imperial gallon, 568.26125 ml exactly, and still the legal measure for draught beer and doorstep milk in the UK. A US pint is 473 ml, which is why a British pint glass holds noticeably more.

What is a US gallon?

Exactly 231 cubic inches. The imperial gallon is 4.546 liters, so US and UK fuel economy figures are not comparable.

How many US gallons are in an imperial pint?

One imperial pint is 0.15011874 US gallons. Going the other way, one US gallon is 6.6613935 imperial pints. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.

Every volume unit here

The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to an imperial pint.

Source: NIST Handbook 130 — US customary liquid measure

Cite this page

APA
Rule Calculator. (2026). Convert Imperial pints to US gallons. Rule Calculator. https://rulecalculators.com/convert/imperial-pint-to-gallon
MLA
"Convert Imperial pints to US gallons." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/imperial-pint-to-gallon.
Chicago
Rule Calculator. "Convert Imperial pints to US gallons." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/imperial-pint-to-gallon.

The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.

Questions people actually ask

How many US gallons are in an imperial pint?
0.15011874. Exactly 231 cubic inches. The imperial gallon is 4.546 liters, so US and UK fuel economy figures are not comparable.
How do I convert US gallons back to imperial pints?
Divide by 0.15011874, or multiply by 6.6613935 — they are the same operation.

Other volume conversions

US gallons to imperial pints — the same conversion the other way.

Calculators that work in volume