21 ml to cc

"Ml to Cc" Calculator
Convert
ml to Cubic Centimeters

How many cc is 21 ml?

Answer

21 ml = 21 cc
mlcc020400204021 ml21 cc

21 ml × 1 = 21 cc

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FAQ

How many cc is 21 ml?

21 ml = 21 cc

Why is 21 ml exactly 21 cc?

Because the liter has been defined as exactly one cubic decimeter since 1964, which makes a milliliter one cubic centimeter. The factor is 1, so nothing is calculated: 21 ml = 21 cc. Between 1901 and 1964 the liter was 1.000028 dm³ and the two units differed in the fifth digit.

Is cc the same as cm³?

Yes, cc is only a keyboard-friendly spelling of cubic centimeter. 21 cc, 21 cm³ and 21 ml name one and the same volume, which is 0.021 L.

Where is cc used instead of ml?

In engine displacement — a 125 cc scooter — and on syringe barrels, where a 21 cc dose and a 21 ml dose are the same thing. Medication-safety guidance still asks prescribers to write ml, because a handwritten cc is easily misread as u for units.