A US customary cup is 236.5882365 milliliters.
Cups to Imperial pints Converter — cup to imp pt
Convert Cup (cup) to Imperial pint (imp pt) using the exact conversion factor (1 cup = 0.4163370923 imperial pint). See the formula, worked examples, conversion table, unit comparison, history, and common uses.
Cups to Imperial pints converter
Converter
Volume Converter
Convert metric, US customary, imperial, cooking, dry, and industrial volume units.
Context values
Some unit families need one extra value for a physically accurate result.
An imperial pint is one eighth of an imperial gallon.
Result = input x 0.0002365882365 / 0.00056826125.
Volume uses the cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cups to Imperial pints
Cup and Imperial pint appear side by side at fuel pumps and on beverage labels, since the US measures liquids in gallons while most of the world uses liters. Cup is typically associated with united States (recipes and cooking measurement), while Imperial pint is typically associated with united Kingdom, Ireland (beer and cider serving is legally defined in imperial pints).
Formula
imperial pints = cups × 0.416337092314
This factor comes from each unit's defined relationship to the category's base unit: 1 cup equals 0.0002365882365 base units, and 1 imperial pint equals 0.00056826125 base units, so dividing one by the other gives the direct cup-to-imperial pint factor of 0.416337092314.
Simple example
1 cup × 0.4163370923 = 0.4163370923 imp pt
1 cup = 0.4163370923 imperial pints.
Real-world example
10 cup × 0.4163370923 = 4.163370923 imp pt
10 cups = 4.163370923 imperial pints.
Conversion table
| Cup (cup) | Imperial pint (imp pt) |
|---|---|
| 1 cup | 0.4163370923 imp pt |
| 5 cup | 2.081685462 imp pt |
| 10 cup | 4.163370923 imp pt |
| 25 cup | 10.40842731 imp pt |
| 50 cup | 20.81685462 imp pt |
| 100 cup | 41.63370923 imp pt |
Reverse conversion: Imperial pint to Cup
0.4163370923 imp pt × 2.401899851 = 1 cup
0.4163370923 imperial pints = 1 cups.
cups = imperial pints × 2.40189985101
For a page dedicated to this direction, see Imperial pint to Cup.
Cup vs. Imperial pint
| Aspect | Cup | Imperial pint |
|---|---|---|
| Family | US customary unit (culinary) | UK/imperial customary unit |
| Typical use | US recipe and cooking measurement | UK and Irish pub beer/cider serving (a legally protected serving size) |
| Where it's used | United States (recipes and cooking measurement) | United Kingdom, Ireland (beer and cider serving is legally defined in imperial pints) |
Understanding the Cup
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
Where it's used: United States (recipes and cooking measurement)
Cooking cup vs. legal US cup. US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Uses of the Cup today
- US recipe and cooking measurement
- Nutrition labeling serving sizes
- Baking, where volume-based flour/sugar measurement is still common in the US
History of the Cup
The cup as a cooking measure grew out of household and community cookbook conventions in 19th-century America, standardizing what had been ad hoc measurements ('a teacup of flour') into a fixed volume.
The US FDA uses a rounded 240 mL 'metric cup' for nutrition labeling purposes, distinct from the slightly smaller legal/customary cup (236.588 mL, exactly 1/16 of a US gallon) used elsewhere.
Historical origin. Cup was not the invention of a single named person; it developed through the process described above.
Understanding the Imperial pint
Imperial pint (imp pt) measures volume. The imperial pint is one-eighth of an imperial gallon: exactly 0.56826125 liters — notably the standard UK beer serving size. It is classified as a UK/imperial customary unit.
Where it's used: United Kingdom, Ireland (beer and cider serving is legally defined in imperial pints)
Imperial pint vs. US pint. The imperial pint (568 mL) is about 20% larger than the US pint (473 mL) — a British 'pint of beer' is meaningfully more beer than an American one.
Uses of the Imperial pint today
- UK and Irish pub beer/cider serving (a legally protected serving size)
- UK milk delivery (historically and in some contexts still)
History of the Imperial pint
The imperial pint follows from Britain's 1824 imperial gallon; it remains legally protected as the mandatory serving measure for draught beer and cider in UK and Irish pubs, one of the few contexts where imperial units remain legally mandated in the UK's otherwise largely metric system.
Historical origin. Imperial pint was not the invention of a single named person; it developed through the process described above.
Cup — sources
- US FDA — Reference Amounts Customarily Consumed — Uses the 240 mL rounded cup for nutrition labeling.
Imperial pint — sources
- UK Weights and Measures Act 1985 — Maintains the imperial pint as the legal draught beer/cider serving measure.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many imperial pints are in 1 cup?
1 cup equals 0.4163370923 imperial pints, using the exact defined conversion factor rather than an estimate.
How do I convert cup to imperial pint?
Multiply the cup value by 0.4163370923. The converter above does this instantly to whatever precision you set.
How do I convert imperial pint back to cup?
Use the reverse factor: 1 imperial pint equals 2.401899851 cups. You can also use the swap control in the converter above to flip the direction instantly.
What is a cup?
Cup (cup) measures volume. The US customary cup used in cooking is defined as exactly 240 milliliters (a rounded culinary standard, not the older 236.588 mL legal cup). It is classified as a US customary unit (culinary).
What is a imperial pint?
Imperial pint (imp pt) measures volume. The imperial pint is one-eighth of an imperial gallon: exactly 0.56826125 liters — notably the standard UK beer serving size. It is classified as a UK/imperial customary unit.
Is the cup to imperial pint conversion exact?
Yes. The imperial pint is one-eighth of an imperial gallon: exactly 0.56826125 liters — notably the standard UK beer serving size. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.
What is the difference between cooking cup vs. legal us cup?
US recipes commonly round the cup to 240 mL for convenience, while the precise legal US cup (used to derive fluid ounces, pints, etc.) is 236.588 mL — a small but sometimes noticeable difference in precise baking.
Where is the cup still used today?
United States (recipes and cooking measurement)