US Teaspoons to Imperial Pints (tsp to pt (UK))

1 US teaspoon equals 0.008673689423 imperial pints (rounded).

1 US teaspoon = 0.008673689423 imperial pints

How to convert US teaspoons to imperial pints

To convert US teaspoons to imperial pints, multiply the number of US teaspoons by 0.008673689423. The factor is rounded to 10 significant digits. To go the other way, multiply imperial pints by 115.2911928 (rounded).

imperial pints = US teaspoons × 0.008673689423

Example: 10 US teaspoons = 0.08673689423 imperial pints.

Pints, quarts, gallons and fluid ounces differ between the US and the UK. Units are labeled 'US' or 'imperial' to avoid confusion.

About these units

US Teaspoon (tsp)

US customaryCurrent unit

One sixth of a US fluid ounce, exactly 4.92892159375 mL. Commonly rounded to 5 mL in recipes.

Teaspoons arrived with tea. Small spoons were common in Europe from at least the 13th century, and the earliest cited mention of a teaspoon is a London Gazette advertisement from 27 December 1686. Britain's Commutation Act of 1784 cut the tea tax from 119 percent to 12.5 percent, tea became cheap, and cups and spoons grew with it. By the 1850s the culinary teaspoon had settled as one third of a tablespoon.

The US teaspoon is one sixth of a US fluid ounce, exactly 4.92892159375 milliliters, though for nutrition labels and medicine it is rounded to 5 mL. Apothecaries once called the small spoon cochleare minus, to distinguish it from the larger cochleare majus. Household spoons are poor measuring tools: one study of 71 kitchen teaspoons found volumes from 2.5 to 7.3 milliliters, which is why dosing instructions point to standard measuring spoons or syringes.

1 US teaspoon = 0.004928921594 liters (approximately).

Sources: Wikipedia: Teaspoon; NIST SP 811, Appendix B.8: conversion factors for volume; 21 CFR 101.9: nutrition labeling household measures

Imperial Pint (pt (UK))

Imperial (British)Current unit

Exactly 568.26125 mL (20 imperial fluid ounces). The pint of beer and milk in the UK and Ireland.

The imperial pint derives from Parliament's 1824 decision to replace Britain's assorted gallons with one defined by ten pounds of water at 62 degrees Fahrenheit. A pint is one eighth of that gallon and holds 20 imperial fluid ounces, or exactly 568.26125 milliliters. The word reached English from French pinte, which in modern French now means half a liter, while Canadian French uses it for the imperial quart.

That pint is about 20 percent larger than the US liquid pint of 473 mL, so a pint in Dublin or London buys noticeably more beer than one in Chicago. When Britain metricated, the pint was kept for draught beer and cider and for milk in returnable bottles, and draught beer has to be served in measured, stamped glasses. Culturally the pint is more than a measure: it is shorthand for a night at the pub.

1 imperial pint = 0.56826125 liters (exactly).

Sources: Wikipedia: Pint; UK Weights and Measures Act 1985, Schedule 1

Related conversions

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