Enter cups to find the equivalent US pints, and choose a different cup standard only when your recipe names one.
Table of contents
How to use our Cups to Pints Converter
- Enter the cup amount from your recipe, measuring cup, package, or worksheet. Decimals such as 1.5 are allowed.
- Keep Cup standard set to US customary for a typical US recipe. Change it only if the source specifically says UK recipe cup or 250 mL recipe cup.
- Click Calculate to see the equivalent number of US pints first, followed by US fluid ounces, quarts, and gallons.
- Sanity-check a US customary conversion: 2 cups equals 1 US pint, and 4 cups equals 1 US quart.
Definitions
US customary cup: A US liquid-volume measure. Two US cups equal one US liquid pint. [1]
US liquid pint: A US volume measure equal to 2 cups or 16 US fluid ounces. [1]
US fluid ounce: A unit of volume, not weight. A US liquid pint contains 16 US fluid ounces. [1]
UK recipe cup: In this calculator, a cup defined as 10 Imperial fluid ounces, which is 284.130625 mL.
250 mL recipe cup: A cup explicitly defined as 250 milliliters. Recipes described as metric do not always use this exact cup size.
Common mistakes and quick fixes
Mistake: Leaving Cups blank or typing words instead of one number.
Fix: Enter one nonnegative number, such as 2, 1.5, or 1.5 cups.
Mistake: Entering a negative cup amount.
Fix: Check Cups and then recalculate. Enter 0 cups or more. Zero is valid and converts to zero in every displayed unit.
Mistake: Typing 1,01 when you mean one point zero one cups.
Fix: Check Cups and then recalculate. Type 1.01. Commas are only thousands separators, such as 1,000.
Mistake: Typing oz after the cup amount.
Fix: Check Cups and then recalculate. Use cup, cups, or c after the number, or type the number alone. Fluid ounces measure volume, while ounces can also describe weight.
Mistake: Leaving US customary selected when the recipe identifies a UK recipe cup or a 250 mL cup.
Fix: Check Cups and then recalculate. Choose the stated cup standard before calculating because the same number of cups can hold different volumes.
Mistake: Treating the pint result as an Imperial or dry-pint amount.
Fix: Check Cups and then recalculate. The calculator always reports US liquid pints. The selected cup standard only defines the original cup volume.
Limitations & Key Assumptions / Boundary Conditions
- The main answer is always in US liquid pints, including when the original cups are UK recipe cups or 250 mL recipe cups.
- Use US customary unless the recipe, measuring tool, package, or source specifically identifies another cup standard. The calculator does not guess the standard from the amount entered.
- This is a liquid-volume conversion. Dry-pint containers, package sizes, and ounces by weight may use a different measurement context.
- The calculation keeps the entered quantity before display rounding. A recipe may use rounded kitchen measures, so its printed conversion can differ slightly.
- Enter one nonnegative cup quantity. Ranges, formulas, unrelated unit suffixes, malformed comma groupings, and non-finite numbers cannot be converted.
Methodology
Conversion method
The calculator assigns a milliliter volume to each entered cup based on the selected cup standard. It converts that total volume to US liquid pints, then calculates the related US fluid-ounce, quart, and gallon amounts. For US customary cups, the rule is 2 cups per US pint. NIST lists 2 cups, 1 pint, and 16 fluid ounces as equivalent cooking measures. [1]
source_volume_ml = cups * selected_cup_ml
us_pints = source_volume_ml / 473.176473
us_fluid_ounces = source_volume_ml / 29.5735295625
us_quarts = us_pints / 2
us_gallons = us_pints / 8
Worked example
For 1.5 US customary cups, divide by 2: 1.5 / 2 = 0.75 US pints. That same volume is 12 US fluid ounces, 0.375 US quarts, and 0.09375 US gallons.
Selected cup volumes
A US customary cup is 236.5882365 mL. The UK recipe-cup choice is 10 Imperial fluid ounces, or 284.130625 mL. The 250 mL choice is exactly 250 mL. The US and Imperial conversion values use NIST conversion factors.