How many ml in a cup of coffee? (3 Measurements)

In this brief guide, we will answer the question, ‘how many ml in a cup of coffee?’. We will discuss the various cup sizes and the amount of coffee they hold in milliliters. We will also specify the coffee cup dimension and the volume it has in milliliters.

How many ml in a cup of coffee?

A coffee cup is universally accepted to have 149.94 milliliters which as a whole number is equal to 150 ml or 5.07 Ounces. However, the volume of a cup can range from 236 ml to 250 ml, depending on location, preference, and the preferred system.

The four common cup sizes are the legal U.S. cup, customary U.S. cup, 1 imperial cup, and the metric cup.

It is beneficial to know the milliliters in a cup of coffee, to keep dire track of the quantity held by a cup for any practical reason. It could be to keep precise track of your coffee, caffeine, or beverage consumption.

For others, people associated with culinary science or arts, need precise measurements to make a certain food or beverage. Even if you are making coffee for yourself, it can be helpful to keep track of precise measurements. For beverages like tea and coffee, even the slightest deviation in quantities can alter the taste or experience for most.

 Each of the cups has the following milliliters:

1 legal U.S. cup = 240 milliliters

1 customary U.S. cup = 236.59 milliliters

1 imperial cup = 284.13 milliliters

1 metric cup = 250 milliliters 

Let us delve into some more common sizes of cups:

A cup is a subjective term; especially as we move across the world. Therefore, the cup is not a term that is internationally recognized. A cup can denote around 5 different measurements; Legal US cup, Customary US cup, Imperial cup, and Metric cup.

According to the metric system, the volume held in a cup of coffee is 250 milliliters which are about 8.45 fluid ounces. The standard American system, however, rounds 8. 25 ounces to 8 ounces as the legal cup, which in milliliters is 237 ml. The imperial system holds 240 milliliters or 8.12 ounces.

Other FAQs about Coffee which you may be interested in.

How much coffee for a 10-cup pot?

How much caffeine is in 10 oz of coffee?

What is the difference between the Imperial Cup versus the Metric Cup?

The Imperial Cup is different from the US Fluid unit. One imperial cup is 9.61 U.S. fluid ounces (or 10 imperial fluid ounces), or 284 ml. The Imperial Cup is a little bigger than the US Cup, when measured as multiple cups, becomes noticeable. 

Metric Cup is part of the Metric System, however, does not currently classify as one. A Metric Cup is equal to 8.45 U.S. fluid ounces; smaller than the Imperial Cup.

The above measurements are determined by science as standard measurements. However, when it comes to food and beverage retail; the meaning of cup can vary. Let us discuss what a cup of coffee is equal to in the world of culinary.

The cups served at restaurants, cafes, and shops are served in either ceramics or takeaway paper, or Styrofoam cups.

The following conversions might help you to identify the volumes in everyday cups of coffee and other beverages:

A small cup holds 8 fluid ounces or 237 ml

A medium coffee cup has 12 fluid ounces or 355 ml.

A standard mug also holds 12 fluid ounces or 355 ml.

A large cup contains 16 fluid ounces or 473 ml.

An extra-large, or jumbo cup, is 20 fluid ounces or 591 ml.

What is the difference between the Coffee Cup Metric, the cup, and the mug?

One C or one coffee cup metric is equal to 150 ml. The Coffee Cup metric is exclusively used to measure coffeemaker sizes and quantities in the US, which resonates with the US customary fluid ounces.

If we narrow down our discussion to coffee there are two main sizes of cups. These are espresso cups and standard coffee mugs.

A mug is equal to 16 Fluid ounces or 473 milliliters. The difference between them is that a single espresso cup contains two oz of coffee grounds and the volume it makes up is 29.5 to 37 milliliters. The double espresso shot holds 59 to 74 milliliters, while a standard coffee mug holds an average of 296 milliliters.

If you are making Espresso Double shots in espresso cups, you will be able to brew twenty-five cups of coffee. However, if you are brewing Espresso Double shots in standard coffee mugs, you will be able to brew five cups.

In this brief guide, we answered the question, ‘how many ml in a cup of coffee?’. We discussed the various cup sizes and the amount of coffee they hold in milliliters. We also specified the coffee cup dimension and the volume it has in milliliters.


Hi, I am Charlotte, I love cooking and in my previous life, I was a chef. I bring some of my experience to the recipes on this hub and answer your food questions.