Imperial cup to US teaspoon
imp cup
tsp
Conversion History
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|---|---|---|
| No conversion history to show. | ||
Quick Reference Table (Imperial cup to US teaspoon)
| Imperial cup (imp cup) | US teaspoon (tsp) |
|---|---|
| 0.25 | 14.41139910592336698052 |
| 0.5 | 28.82279821184673396103 |
| 1 | 57.64559642369346792207 |
| 2 | 115.29119284738693584414 |
| 4 | 230.58238569477387168828 |
| 8 | 461.16477138954774337656 |
About Imperial cup (imp cup)
The imperial cup is a unit of volume equal to half an imperial pint, approximately 284.1 milliliters. It was historically used in British cooking recipes and is still found in older UK and Commonwealth cookbooks. The imperial cup is distinct from the US legal cup (240 mL) and the Australian metric cup (250 mL). Since the UK's adoption of metric measures, the imperial cup has largely fallen out of use, replaced by milliliters and the 250 mL metric cup.
Older British recipes (pre-1970s) may call for cups measured as imperial cups (~284 mL). A standard UK teacup holds about 1 imperial cup.
About US teaspoon (tsp)
The US teaspoon (tsp) is a unit of culinary volume equal to approximately 4.929 milliliters, one third of a US tablespoon. It is one of the smallest standard US customary volume units, used in cooking, baking, and medicine for small ingredient quantities. The US teaspoon differs from the metric teaspoon (exactly 5 mL) and the imperial teaspoon (about 5.92 mL). In medicine, 5 mL is the standardized dosing teaspoon.
A standard dose of liquid children's medicine is one 5 mL teaspoon. A recipe calling for 1 tsp of vanilla extract uses about 4.93 mL.
Imperial cup – Frequently Asked Questions
How many milliliters is an imperial cup?
One imperial cup equals approximately 284.1 mL — half an imperial pint (568 mL). This is larger than both the US legal cup (240 mL) and the Australian metric cup (250 mL).
Is the imperial cup still used in the UK?
The imperial cup is largely obsolete in modern UK cooking, which now uses metric measurements. It may appear in old British recipe books published before the 1970s metric changeover.
How does the imperial cup compare to the US cup?
An imperial cup (284.1 mL) is about 18% larger than a US legal cup (240 mL). When using old British recipes in the US, 1 imperial cup ≈ 1.18 US cups — worth adjusting in baking.
What replaced the imperial cup in British recipes?
Modern British recipes use metric measures: milliliters (mL) for liquids and grams (g) for solids. The BBC and major UK food publishers phased out cup measures in favor of grams through the 1970s–1990s.
How many imperial cups are in an imperial gallon?
There are 16 imperial cups in one imperial gallon (8 pints × 2 cups/pint = 16 cups).
US teaspoon – Frequently Asked Questions
How many milliliters is a US teaspoon?
One US teaspoon equals approximately 4.929 mL, typically rounded to 5 mL in medicine and 4.93 mL in precise culinary conversions. The metric teaspoon used in Australia and Canada is exactly 5 mL.
What is the difference between a US teaspoon and an imperial teaspoon?
A US teaspoon is about 4.93 mL; an imperial (UK) teaspoon is about 5.92 mL — approximately 20% larger. This difference can affect recipes crossing US and UK sources, particularly for spices and leavening agents.
How many teaspoons are in a tablespoon?
In the US system, 3 teaspoons equal 1 tablespoon (3 × 4.929 mL = 14.787 mL). The metric equivalent is the same ratio: 3 × 5 mL = 15 mL tablespoon.
Is a medicine teaspoon the same as a cooking teaspoon?
Not exactly. Medicine dosing uses a standardized 5 mL teaspoon, while the US cooking teaspoon is about 4.93 mL. For medication accuracy, always use a calibrated oral syringe rather than a kitchen teaspoon, which can vary from 3 to 7 mL.
How many US teaspoons are in a cup?
There are 48 US teaspoons in one US cup: 1 cup = 16 tablespoons = 48 teaspoons.