1/4 Cup to ml: Convert a Quarter Cup to Milliliters
Convert 1/4 cup to ml: a US quarter cup equals 59.15 milliliters. Learn the exact factor, why a quarter cup matters in baking, and common values.
Why a Quarter Cup Comes Up
A quarter cup is one of the most common small measures in US baking and cooking, used for butter, liquids, and chopped items. The milliliter value is what a metric recipe or scale expects.
One US quarter cup equals 59.15 ml. Our cup to ml converter returns it directly; 59.15 ml is the rounded figure.
The 1/4 Cup to ml Formula
One US cup is 236.59 ml, so a quarter cup is one fourth of that: 236.59 / 4 = 59.1475 ml, rounded to 59.15 ml.
The Exact Calculation
For 1/4 cup: 236.59 × 0.25 = 59.15 ml. For 1/2 cup it doubles to 118.29 ml, and for 3/4 cup it is 177.44 ml.
To go the other way, divide milliliters by 236.59: 59.15 ml / 236.59 = 0.25 cup.
Why the US Cup Is 236.59 ml
The US customary cup is defined as 8 US fluid ounces, and one fluid ounce is 29.5735 ml, so 8 × 29.5735 = 236.588 ml, rounded to 236.59 ml.
What 59.15 ml Looks Like
A quarter cup of milk, oil, or water is 59.15 ml; it is about 4 US tablespoons (each 14.79 ml). A stick of butter is 1/2 cup, so a quarter cup is half a stick.
For the full-cup value, our guide to 1 cup to ml covers the base measure.
When You Need 1/4 Cup in ml
The conversion matters for baking and scaling. A US recipe calling for 1/4 cup of liquid is 59.15 ml on a metric scale; halving a half-cup measure gives the same.
It also helps when a metric recipe lists 60 ml and you use a quarter-cup measure, which is close enough for most cooking.
Frequently Asked Questions
How many ml is 1/4 cup?
1/4 US cup equals 59.15 ml, because one US cup is 236.59 ml and a quarter of that is 59.1475 ml.
How do I convert 1/4 cup to ml?
Multiply 0.25 by 236.59 ml: 0.25 × 236.59 = 59.15 ml.
Is 1/4 cup the same as 60 ml?
Close. 1/4 cup is 59.15 ml, so 60 ml is a near-equivalent often used in metric recipes.
How many tablespoons is 1/4 cup?
1/4 cup is 4 US tablespoons (4 × 14.79 ml = 59.15 ml).
How do I convert 59.15 ml to cups?
Divide by 236.59: 59.15 / 236.59 = 0.25 cup.
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US Cups to mL Converter
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Quick Summary
1/4 US cup equals 59.15 ml (236.59 / 4). A quarter cup is about 4 tablespoons. The reverse: 59.15 ml / 236.59 = 0.25 cup.
Related Guide
1 Cup to ml: The Essential US Cooking Conversion
Convert 1 cup to ml with the exact formula: 1 US cup equals 236.59 ml. The key link between American recipes and metric measuring tools.
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Disclaimer
Unit conversions on this site use internationally recognized, fixed conversion factors (for example, 1 inch = 2.54 cm, 1 pound = 0.45359237 kg, 1 °F = (°C × 9/5) + 32). They are provided for general, informational, and educational use. For applications where accuracy is critical — such as medical dosing, engineering, scientific research, trade, or legal compliance — always verify results against authoritative sources such as the U.S. National Institute of Standards and Technology (NIST) and the official International System of Units (SI) brochure, and follow any applicable local standards.
Exact Constants & Authoritative Sources
Every conversion on this page uses the fixed, internationally agreed constants below — drawn from NIST and the SI Brochure. No values are estimated or rounded as if exact. See the full list on our Sources & Standards page.
- EXACT1 US gallon (gal) = 3.785411784 litres (exact, 231 in³)
- EXACT1 US fluid ounce (fl oz) = 29.5735295625 mL (exact, 1/128 gal)
- EXACT1 US cup = 236.5882365 mL (exact, 8 fl oz)
- EXACT1 US pint (pt) = 473.176473 mL (exact, 16 fl oz)
- EXACT1 US quart (qt) = 946.352946 mL (exact, 32 fl oz)
- EXACT1 litre (L) = 1000 millilitres (definition)
Common Pitfalls & How to Avoid Them
US vs. Imperial (UK) cups
A US cup is 236.59 mL, but a UK/metric cup is 250 mL and an Imperial cup is ~284 mL. Recipes from different countries are not interchangeable drop-in.
Fluid ounce is volume, not mass
A US fl oz is 29.57 mL of volume. 1 fl oz of water ≈ 29.57 g, but 1 fl oz of honey or oil weighs more. Do not treat fluid ounces as grams.
Teaspoon/tablespoon sizes differ
1 US tbsp = 14.7868 mL; 1 US tsp = 4.92892 mL. Metric measuring spoons are 15 mL and 5 mL — close but not exact; for baking precision use weighed grams.
A unit-conversion reference site has no manufacturer-specific or device calibration parameters, so "layered tuning" does not apply here. The only real error-handling is input validation: the converter rejects non-numeric, empty, or out-of-range entries and shows a clear message, then falls back to exact constants above. No estimated or rounded figures are ever presented as exact.
Authoritative sources for this page
- NIST (U.S. National Institute of Standards and Technology) — NIST SP 330 — The International System of Units (SI), 2019 edition
- BIPM (International Bureau of Weights and Measures) — SI Brochure — The International System of Units (9th edition)
Last Updated 2026 | This article was reviewed for accuracy