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21 Milliliters to Fluid Ounces

21 milliliters equals 0.7101 fluid ounces. Use the formula, worked example, and conversion table below to check the math.

21 mL = 0.7101 fl oz
mL × 0.033814 = fl oz
Try: 16 mL to fl oz 20 mL to fl oz 22 mL to fl oz 26 mL to fl oz
21 mL is also
21 mL = 0.021 L 21 mL = 0.005548 gal 21 mL = 0.0888 cup 21 mL = 0.0444 pt 21 mL = 0.0222 qt 21 mL = 1.42 tbsp 21 mL = 4.26 tsp
mL
0.7101 fl oz

How to Convert Milliliters to Fluid Ounces

mL × 0.033814 = fl oz
  1. Start with 21 mL
  2. Multiply by 0.033814: 21 × 0.033814 = 0.7101
  3. Result: 21 mL = 0.7101 fl oz

The same formula works for any value. Multiply by 0.033814 to go from milliliters to fluid ounces.

Common Milliliter to Fluid Ounce Conversions

Milliliters (mL) Fluid Ounces (fl oz)
1 mL 0.0338 fl oz
2 mL 0.0676 fl oz
5 mL 0.1691 fl oz
10 mL 0.3381 fl oz
15 mL 0.5072 fl oz
20 mL 0.6763 fl oz
21 mL 0.7101 fl oz
25 mL 0.8454 fl oz
50 mL 1.69 fl oz
75 mL 2.54 fl oz
100 mL 3.38 fl oz
250 mL 8.45 fl oz
500 mL 16.91 fl oz
1,000 mL 33.81 fl oz
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Frequently Asked Questions

21 milliliters equals 0.7101 fluid ounces.
The formula is: mL × 0.033814 = fl oz. See the mL to fl oz formula page for worked examples.
Use the fluid ounces to milliliters converter. The reverse formula is: fl oz × 29.57353 = mL.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (mL × 0.033814 = fl oz) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026