Imperial teaspoon to Imperial gallon
imp tsp
imp gal
Conversion History
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Quick Reference Table (Imperial teaspoon to Imperial gallon)
| Imperial teaspoon (imp tsp) | Imperial gallon (imp gal) |
|---|---|
| 0.25 | 0.00032552083334181155 |
| 0.5 | 0.0006510416666836231 |
| 1 | 0.0013020833333672462 |
| 2 | 0.0026041666667344924 |
| 3 | 0.0039062500001017386 |
| 6 | 0.00781250000020347719 |
About Imperial teaspoon (imp tsp)
The imperial teaspoon is a unit of volume equal to approximately 5.919 milliliters, one third of an imperial tablespoon. It is larger than the US teaspoon (4.929 mL) and the metric teaspoon (5 mL). It appears in pre-metrication British and Commonwealth recipes. In medicine and pharmacology, both the UK and US have standardized on the 5 mL metric teaspoon for dosing, replacing all customary teaspoon sizes. Modern UK recipes do not use the imperial teaspoon.
Pre-metrication British recipes called for teaspoons of approximately 5.92 mL. A standard UK medicine teaspoon is now 5 mL (metric).
About Imperial gallon (imp gal)
The imperial gallon is a unit of volume defined as exactly 4.54609 liters, used in the United Kingdom, Canada, and some Commonwealth nations. It is approximately 20% larger than the US liquid gallon. Fuel economy in the UK is expressed in miles per imperial gallon. The imperial gallon divides into 8 imperial pints, each of 568 mL. The UK officially metricated fuel sales to liters in the 1980s–1990s, but miles per imperial gallon remains the legal unit for new car fuel economy labels.
UK car fuel economy figures are expressed in miles per imperial gallon. One imperial gallon equals 8 standard UK pints of beer.
Imperial teaspoon – Frequently Asked Questions
How many milliliters is an imperial teaspoon?
One imperial teaspoon equals approximately 5.919 mL — slightly larger than the US teaspoon (4.929 mL) and the metric teaspoon (5 mL).
What is the difference between an imperial and a metric teaspoon?
An imperial teaspoon is approximately 5.92 mL; a metric teaspoon is exactly 5 mL. The metric teaspoon is now standard in UK cooking, medicine, and pharmacology.
Is the imperial teaspoon used today?
The imperial teaspoon is obsolete in modern UK, Australian, and Canadian cooking, which all use the 5 mL metric teaspoon. It may appear in cookbooks published before the 1970s metrication period.
Why is a "pinch" of salt not as vague as it sounds?
A culinary pinch — the amount you can hold between thumb and forefinger — is roughly 0.3–0.5 mL, or about 1/16 of a teaspoon. Professional recipe developers have measured this and found surprising consistency across people: the human fingertip geometry constrains how much fine powder you can grip. A "dash" (liquid) is about 0.6 mL, and a "smidgen" is half a pinch (~0.15 mL). These folksy terms survive in recipes because they map to real, repeatable volumes — within the tolerance that salt and spice measurements actually require.
Why did the UK standardize on 5 mL for medicine teaspoons?
The WHO recommended the 5 mL metric teaspoon for medication dosing in the 1970s to eliminate ambiguity between imperial (5.92 mL), US (4.93 mL), and other teaspoon sizes. A calibrated 5 mL oral syringe is now the recommended tool for all liquid medicines.
Imperial gallon – Frequently Asked Questions
How many liters are in an imperial gallon?
One imperial gallon is defined as exactly 4.54609 liters — approximately 20% more than the US liquid gallon (3.785 L).
Does the UK still use gallons?
The UK switched fuel sales to liters in the 1990s. However, miles per gallon (imperial) remains the legal unit for car fuel economy on new vehicle labels. Road speed is in mph and distances are in miles, so imperial gallons remain embedded in UK motoring.
How does UK MPG differ from US MPG?
UK MPG uses the imperial gallon (4.546 L); US MPG uses the US gallon (3.785 L). Multiply UK MPG by 0.832 to get US MPG. A car rated 40 UK MPG ≈ 33 US MPG.
How many pints are in an imperial gallon?
There are exactly 8 imperial pints in one imperial gallon. Each imperial pint is 568 mL, compared to 473 mL for a US pint.
Is the imperial gallon still used in Canada?
Canada officially metricated in the 1970s and fuel is sold in liters. However, some older Canadians and certain agricultural contexts still reference imperial gallons informally. Canadian and UK imperial gallons are identical (4.54609 L).