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Convert US teaspoons to Imperial quarts

1 US teaspoon is 0.004337 qt (UK). One US teaspoon is exactly 0.00433684471161 imperial quarts.

One US teaspoon is 0.0043368447 imperial quarts. To convert US teaspoons to imperial quarts, multiply by 0.0043368447; to go the other way, divide by 0.0043368447 or multiply by 230.58239. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and it follows from NIST Handbook 130. One third of a tablespoon, about 4.93 ml.

Factor checked against the defining standard · How we check

Imperial quarts
0.004337 qt (UK)
US teaspoons × 0.0043368447
1 * 0.00433680.004 qt (UK)

1 US teaspoon in every volume unit

1 US teaspoon expressed in every volume unit
UnitValueExact factor
US teaspoons (as entered)1 tsp—
US tablespoons0.3333333333 tbsp× 0.333333333333
US fluid ounces0.1666666667 fl oz× 0.166666666667
US cups0.02083333333 cup× 0.0208333333333
US pints0.01041666667 pt× 0.0104166666667
US quarts0.005208333333 qt× 0.00520833333333
US gallons0.001302083333 gal× 0.00130208333333
milliliters4.928921594 ml× 4.92892159375
liters0.004928921594 L× 0.00492892159375
imperial gallons0.001084211178 gal (UK)× 0.0010842111779
imperial quarts0.004336844712 qt (UK)× 0.00433684471161
imperial pints0.008673689423 pt (UK)× 0.00867368942322
imperial fluid ounces0.1734737885 fl oz (UK)× 0.173473788464
imperial gills0.03469475769 gi (UK)× 0.0346947576929
cubic millimetres4,928.921594 mm³× 4,928.92159375
cubic centimetres4.928921594 cm³× 4.92892159375
cubic inches0.30078125 in³× 0.30078125
cubic feet0.0001740632234 ft³× 0.00017406322338
cubic yards0.000006446786051 yd³× 0.0000064467860511
cubic metres0.000004928921594 m³× 0.00000492892159375

Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.

How do you convert US teaspoons to imperial quarts? The converter and the working

  1. 1.Take the measurement in US teaspoons.
  2. 2.Multiply by 0.0043368447 — that is how many imperial quarts fit in one US teaspoon.
  3. 3.To go back the other way, divide by 0.0043368447, or multiply by 230.58239.

Worked example: 25 US teaspoons to imperial quarts

Formula
tsp × 0.0043368447 = qt (UK)
Arithmetic
25 × 0.0043368447 = 0.11 qt (UK)
Answer
25 tsp = 0.11 qt (UK)

The factor is rounded for display; the figure above is computed from the full value.

US teaspoons to imperial quarts conversion table

US teaspoons to imperial quarts conversion table
US teaspoonsImperial quarts
1 tsp0.004337 qt (UK)
2 tsp0.01 qt (UK)
3 tsp0.01 qt (UK)
4 tsp0.02 qt (UK)
5 tsp0.02 qt (UK)
6 tsp0.03 qt (UK)
7 tsp0.03 qt (UK)
8 tsp0.03 qt (UK)
9 tsp0.04 qt (UK)
10 tsp0.04 qt (UK)
12 tsp0.05 qt (UK)
15 tsp0.07 qt (UK)
20 tsp0.09 qt (UK)
25 tsp0.11 qt (UK)
50 tsp0.22 qt (UK)
100 tsp0.43 qt (UK)
200 tsp0.87 qt (UK)
300 tsp1.3 qt (UK)
500 tsp2.17 qt (UK)
1000 tsp4.34 qt (UK)
2000 tsp8.67 qt (UK)
5000 tsp21.68 qt (UK)
10000 tsp43.37 qt (UK)

What is a US teaspoon?

One third of a tablespoon, about 4.93 ml. A metric teaspoon is a round 5 ml, which is why recipes rarely notice the difference.

What is an imperial quart?

A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.

How many imperial quarts are in a US teaspoon?

One US teaspoon is 0.0043368447 imperial quarts. Going the other way, one imperial quart is 230.58239 US teaspoons. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.

Every volume unit here

The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a US teaspoon.

Source: NIST Handbook 130 — US customary liquid measure

Cite this page

APA
Rule Calculator. (2026). Convert US teaspoons to imperial quarts. Rule Calculator. https://rulecalculators.com/convert/teaspoon-to-imperial-quart
MLA
"Convert US teaspoons to imperial quarts." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/teaspoon-to-imperial-quart.
Chicago
Rule Calculator. "Convert US teaspoons to imperial quarts." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/teaspoon-to-imperial-quart.

The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.

Questions people actually ask

How many imperial quarts are in a US teaspoon?
0.0043368447. A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.
How do I convert imperial quarts back to US teaspoons?
Divide by 0.0043368447, or multiply by 230.58239 — they are the same operation.

Other volume conversions

Imperial quarts to US teaspoons — the same conversion the other way.

Calculators that work in volume