# US pints to US cups converter

> Convert US pints to US cups (pints to cups) with the exact factor, a conversion chart and worked steps.

Interactive version: https://www.calcopenly.com/conversion/pints-to-cups
Subject: Unit converters

US liquid pints can be restated as smaller kitchen measures when portioning a recipe. The US pint is not the same size as a British pint. The conversion concerns liquid volume and should not be used as a direct weight conversion for flour or other ingredients.

One US pint is exactly 2 US cups, so 1 pt is 2 cup. To convert pints to cups, multiply by 2; to convert back, multiply by 0.5.

The US liquid pint is 16 US fluid ounces, exactly 473.176473 mL; the UK pint is 568.26125 mL. Because both units are defined exactly, the factor above is exact and the results here carry no conversion error.

## Inputs

- **US pints (pt)**

## Results

- US cups (cup) — main result
- Conversion
- 1 cup in US pints (pt)

## Formula

$$
\text{US cups} = \text{US pints} \times 2
$$

## Worked examples

### 1 pt to cup

- US pints (pt): 1 pt
- **US cups: 2 cup**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 1.5 pt to cup

- US pints (pt): 1.5 pt
- **US cups: 3 cup**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

### 6 pt to cup

- US pints (pt): 6 pt
- **US cups: 12 cup**
- Checked against: Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions)

## Questions

### When would I convert pints to cups?

US liquid pints can be restated as smaller kitchen measures when portioning a recipe. The US pint is not the same size as a British pint. The conversion concerns liquid volume and should not be used as a direct weight conversion for flour or other ingredients.

### How many US cups are in a US pint?

One US pint is exactly 2 US cups. The US liquid pint is 16 US fluid ounces, exactly 473.176473 mL; the UK pint is 568.26125 mL.

### How do you convert pints to cups?

Multiply the number of US pints by 2. For example, 1 pt × 2 = 2 cup. To go the other way, divide by 2.

### Is a cup 240 mL or 236.6 mL?

Both are in use. The US customary cup in recipes is 236.588 mL. US nutrition labels use a rounded "legal cup" of 240 mL (21 CFR 101.9), and the metric cup used in Australia, New Zealand and Canada is 250 mL.

### How accurate is the US pints to US cups converter?

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “1 pt to cup” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

### Where does the method come from?

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.

## Sources

- [NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C: General tables of units of measurement](https://www.nist.gov/pml/weights-and-measures/publications/nist-handbooks/handbook-44)
- [BIPM, The International System of Units (SI Brochure), 9th edition](https://www.bipm.org/en/publications/si-brochure)