4.5 Milliliters to Ounces

4.5 mL ≈ 0.15216 fl oz

Calculation: fl oz = 4.5 mL × 0.033814 ≈ 0.15216 fl oz

Milliliter to Ounce Converter

Choose the type of measurement to convert
Select the source unit to convert from
Select the target unit to convert to
Enter a numeric value or fraction to convert
Sig. Figures:

How much is 4.5 mL?

4.5 mL (0.15 fl oz) is about one metric teaspoon, a standard small medicine dose.

What does 4.5 mL look like?

Illustration of a medicine dropper (teaspoon volume)
4.5 mL (0.15 fl oz) is about one metric teaspoon, a standard small medicine dose.

4.5 mL on the ounce scale

mL0246810fl oz00.050.10.150.20.250.3

4.5 mL = 0.1522 fl oz

Did you know? One teaspoon is 5 mL.

The metric teaspoon is exactly 5 mL. The US customary teaspoon is 4.93 mL — close enough for cooking.

How to Convert Milliliter to Ounce

1 milliliter = 0.033814 ounces

Ounce = Milliliter × 0.033814

Example: 4 12 mL × 0.033814 = 0.15216 fl oz

Reverse Conversion

To convert ounces back to milliliters:

  • Remember, 1 ounce equals 29.5735 milliliters.
  • To convert 0.15216 fl oz to mL, multiply 0.15216 x 29.5735, resulting in 4 12 mL.

4 12 mL is also equal to:

  • 0.0045 liter
  • 0.01902 cup
  • 0.0095102 pint
  • 0.0047551 quart

Frequently Asked Questions

How much is 4.5 milliliters in ounces?

4.5 milliliters equals 0.15216 ounces. This is calculated by multiplying 4.5 by the conversion factor 0.033814.

What does 4.5 milliliters look like in ounces?

4.5 milliliters (0.15216 ounces) is a teaspoon or a small medicine dose.

How do you calculate 4.5 milliliters to ounces?

Multiply 4.5 by the conversion factor 0.033814. The calculation is 4.5 × 0.033814 = 0.15216 ounces. This factor is defined by international measurement standards.

Share This Calculation

4.5 milliliters = 0.152163 ounces
4.5 milliliters = 0.152163 ounces — conversion chart

Nearby Conversions

0.5 milliliters0.01691 ounces 1.5 milliliters0.05072 ounces 2.5 milliliters0.08454 ounces 3.5 milliliters0.1183 ounces 5.5 milliliters0.186 ounces 6.5 milliliters0.2198 ounces 7.5 milliliters0.2536 ounces 8.5 milliliters0.2874 ounces 9.5 milliliters0.3212 ounces 10.5 milliliters0.355 ounces 11.5 milliliters0.3889 ounces 12.5 milliliters0.4227 ounces 13.5 milliliters0.4565 ounces 14.5 milliliters0.4903 ounces

For general conversions between milliliters and ounces, see the milliliters to ounces converter.

Also convert Milliliters to:

Conversion factors verified against NIST, BIPM, ISO 80000-3 1 US gallon = 3.785411784 L (exact, US customary). Last reviewed: March 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.