150 mL to Cups
Exactly how many US cups are in 150 mL? 150 mL = 0.634 cup, with a quick reference table for other common milliliter amounts.
150 mL to Cups: The Quick Answer
150 mL converts to 0 cups. Whether you are reading a metric label, a recipe, or an international spec, knowing how to convert 150 mL keeps your numbers consistent. Use our ml to cups converter for any value, or read on for the full breakdown of the 0 cups result.
The Exact Milliliters to US Cups Formula
A US cup is 236.588 mL. To convert milliliters to US cups, divide the milliliters by 236.588.
Step-by-Step Calculation
Start with 150 mL. Divide by 236.588: 150 / 236.588 = 0.63393 cups, which rounds to 0.63 cups.
A Quick Mental Estimate
150 mL is a bit over half a cup; since 250 mL is about 1 cup, 150 mL is roughly 3/5 of a cup.
Where 150 mL Comes Up
150 mL is a frequent single-serve drink size and a common addition in metric baking (think 150 mL of milk or cream). In cup terms it is about two-thirds of a cup.
150 mL Compared With Nearby Values
Nearby milliliter amounts: 100 mL = 0.42 cups, 125 mL = 0.53 cups.
On the other side, 200 mL = 0.85 cups, 250 mL = 1.06 cups. Each step moves the figure smoothly, so the same formula scales to any amount.
Practical Uses of the 150 mL Conversion
Use this when a metric recipe calls for 150 mL of liquid and your kit is in cups. Our mL to cups converter handles any value, and US cups to mL converts cups to milliliters.
Frequently Asked Questions
How many cups is 150 mL?
150 mL × 0.00422675 = 0.634 cup.
How many mL is two-thirds of a cup?
0.667 cup × 236.588 = 157.73 mL.
How many mL is one cup?
1 US cup = 236.588 mL.
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Quick Summary
150 mL equals 0 cups. Use the milliliters to us cups relationship shown above for exact, repeatable results.
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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