Pints to Millilitres (pt to mL)

Common questions

How many mL are in a pint?

568.26125 mL in an imperial pint and 473.176473 mL in a US liquid pint; confirm the convention explicitly in your source. This page opens on the imperial one. The amounts asked for next most often, all imperial: a quarter pint is 142.0653125 mL, half a pint is 284.130625 mL, 1.5 pints is 852.391875 mL, 2 pints is 1,136.5225 mL, 3 pints is 1,704.78375 mL, 4 pints is 2,273.045 mL, 6 pints is 3,409.5675 mL and 8 pints is 4,546.09 mL, which is the imperial gallon exactly. Type any of them into the From box and the headline changes without pressing anything.

Is this the UK pint or the US pint, and can I switch?

It opens on Pint (imperial) into Milliliter (mL), whatever pair you last used on the main converter. Both menus carry Pint (US) at all times, so choosing it in the From box gives the 473.176473 mL pint: half of one is 236.5882365 mL, 2 US pints are 946.352946 mL and 8 are 3,785.411784 mL, the US gallon. Set the two against each other and 1 imperial pint is 1.2009499255 US pints, while 1 US pint is 0.832674184629 imperial pints, so the British pint is about 20 percent larger. The Swap units button between the boxes turns this page into a millilitres to pints converter without reloading it.

Why are the two pints different sizes, and are both figures exact?

Both are exact, because both come from a gallon that is defined rather than measured. The imperial gallon is exactly 4.54609 litres and a pint is an eighth of it, which gives 568.26125 mL with nothing left over. The US gallon is exactly 231 cubic inches and an inch is exactly 2.54 cm, which makes the US pint 473.176473 mL. The two systems also count their pints differently: an imperial pint is 20 imperial fluid ounces and a US pint is 16 US fluid ounces, and the imperial fluid ounce is the smaller ounce at 28.4130625 mL against 29.5735295625 mL for the US one. The only rounding on this page is in the printing, which stops at twelve significant digits.

How do I convert mL back to pints?

Divide by 568.26125, or press the Swap units button between the two boxes, which turns this page into a millilitres to pints converter. It then reads 100 mL as 0.175975398639 pints, 250 mL as 0.439938496598, 284 mL as 0.499770132136, 500 mL as 0.879876993196, 568 mL as 0.999540264271 and 1,000 mL as 1.75975398639. In US pints that same litre is 2.11337641887. A carton labelled 568 mL is 0.26125 mL short of a full imperial pint, an arithmetic difference; the converter does not infer the carton’s actual contents or labelling method.

How many mL is a pint of beer, and a pint of milk?

The beverage, container and country do not establish the quantity or pint convention. For a source that explicitly supplies imperial pints, 1 is exactly 568.26125 mL and 0.5 is 284.130625 mL. For supplied US liquid pints, 1 is exactly 473.176473 mL. A true one-third imperial pint is the exact fraction 568.26125 / 3 mL, which rounds to 189.420416667 mL. Entering the finite decimal 0.333333333333 instead gives exactly 189.42041666647724625 mL and displays as 189.420416666 mL. The scalar field does not accept a slash fraction.

How many pints is a litre, and how many is 500 mL?

One litre is 1.75975398639 imperial pints or 2.11337641887 US pints, a little over a pint and three quarters either way you read the imperial figure. 500 mL is 0.879876993196 imperial pints, just under seven eighths of one, and 1.05668820943 US pints. To work in that direction, press Swap units, or choose Liter (L) in the From box: the list under the answer then carries Pint (US) as one of the common units, and Pint (imperial) joins it when the switch marked Show 5 more is ticked.

Can I type half a pint as a fraction?

The scalar field refuses a slash fraction such as 1/2. Enter a decimal, optionally signed, with correctly grouped thousands and scientific notation: 0.5 pt is 284.130625 mL, 0.25 pt is 142.0653125 mL, 0.75 pt is 426.1959375 mL and 1,000 pt is 568,261.25 mL. A suffix must match the selected From unit and convention. Fraction Calculator supports rational arithmetic, but any rounded decimal you then enter here becomes a new finite-decimal quantity.

Does the page keep this pair, and does anything leave my browser?

This focused page opens on Pint (imperial) to Milliliter (mL), while preserving the main converter’s saved unit pair. When storage is usable, a saved value and uncommon-unit preference can travel between pages. Its suffix must still match From. Valid deliberate scalar edits can save those fields after a short delay; invalid or incomplete drafts preserve the saved record. Unusable or conflicting records remain until you use Forget saved settings, which keeps the current conversion on screen. Your input and converted values are calculated in the browser and are not uploaded by the converter. The definitions arrive with the page, so conversion needs no external data lookup and keeps working offline after the page has loaded. The core conversion needs no account. Copy result copies the displayed headline without digit-grouping commas; each visible conversion row has its own Copy button. Displayed and copied values round to twelve significant digits. If native copying fails, a complete selectable summary identifies the input, selected pair and conventions and includes every unit in the category, including uncommon units.