Kitchen Measurement Converter

Which cup does this converter use?

The US customary cup of 236.588 ml. Recipes written for a 250 ml metric cup are about 6% larger per cup, and an imperial cup is larger again, so converting those recipes with the US cup will leave you slightly short. The converter has no switch for other cup sizes.

How many millilitres are in the spoons and fluid ounces here?

The stored values are 14.787 ml per tablespoon, 4.929 ml per teaspoon and 29.574 ml per fluid ounce, all US sizes. Three tablespoons therefore convert to 44.36 ml, whereas a recipe using a 15 ml metric tablespoon would mean 45 ml. A UK fluid ounce is about 28.4 ml, which is not what this tool applies.

Why does cups to grams say it cannot convert?

Volume units (cup, tablespoon, teaspoon, fluid ounce, ml, litre) and mass units (gram, ounce, pound, kg) are kept in separate groups. Going from one group to the other needs the density of the specific ingredient, which the tool does not hold, so it returns "Cannot convert between volume and mass" instead of guessing.

Is the "ounce" a weight or a fluid measure?

Ounce means weight, at 28.3495 g, and fluid ounce means volume, at 29.574 ml. They are separate options in the list and cannot be converted into each other, because one is mass and the other is volume.

How are results rounded?

Values of 100 or more keep one decimal place, values from 10 to under 100 keep two, and smaller values keep up to four, with trailing zeros removed. That is why 350 ml shows as 1.4794 cup, 500 g as 17.64 oz and 2.5 cups as a clean 40 tbsp.

What happens with negative, blank or same-unit inputs?

A negative or non-numeric amount is treated as 0. Choosing the same unit on both sides simply returns the amount, for example 100 ml to ml gives 100 ml.

Can it convert temperatures or ingredient-specific weights?

No. It handles only the ten units in its list, and only within volume or within weight. Oven temperatures and per-ingredient cup weights for flour, sugar or butter are not included.