How to convert fl oz to ml
Example: an 8 oz cup of coffee is 8 × 29.57 = 236.6 ml — the size of a standard US measuring cup. Quick math: ×30 gives 240, close enough for any kitchen. Perfume and skincare labels print both: that "1.7 fl oz" bottle is 50 ml, and "3.4 fl oz" is 100 ml.
Oz to ml conversion chart
| fl oz | ml |
|---|---|
| 0.5 | 14.8 |
| 1 | 29.6 |
| 1.5 | 44.4 |
| 2 | 59.1 |
| 3 | 88.7 |
| 3.4 | 100.6 |
| 4 | 118.3 |
| 5 | 147.9 |
| 6 | 177.4 |
| 8 | 236.6 |
| 10 | 295.7 |
| 12 | 354.9 |
| 16 | 473.2 |
| 16.9 | 499.8 |
| 20 | 591.5 |
| 24 | 709.8 |
| 32 | 946.4 |
| 64 | 1892.7 |
| 128 | 3785.4 |
Bar, kitchen, and bathroom anchors
- Cocktails: a US shot/jigger is 1.5 oz = 44 ml; a double is 3 oz = 89 ml. Classic recipes in "parts" convert cleanly once you fix the shot.
- Cooking: 1 cup = 8 oz = 237 ml; a US pint (2 cups) = 473 ml; a quart = 946 ml — just shy of a litre; a gallon = 128 oz = 3.785 L.
- Cosmetics: 1.7 oz = 50 ml and 3.4 oz = 100 ml dominate because 100 ml is the international travel limit.
Which ounce does your recipe mean?
US recipes mean US fluid ounces (29.57 ml). Older British recipes may mean imperial fluid ounces (28.41 ml) — 4% smaller — and a UK pint is 20 imperial oz (568 ml), not 16. For dry ingredients listed in ounces, that's weight (28.35 g each): use a scale, because ounces of flour by volume and by weight differ wildly.
Frequently asked questions
How many ml is 8 oz?
236.6 ml — one US cup. The '8 glasses of water a day' adage translates to about 1.9 litres.
How many ml is 1.5 oz (a shot)?
44.4 ml. Bars abroad pour metric: a 40 ml or 50 ml measure — so a 'shot' varies by country more than drinkers expect.
What is 16.9 oz in ml?
Exactly 500 ml — the half-litre bottle. The odd-looking 16.9 is just metric packaging translated for US labels.
How many ml in a gallon?
A US gallon is 128 fl oz = 3,785 ml. The imperial gallon is larger: 4,546 ml — the two 'gallons' differ by 20%.
Do I multiply by 29.57 or 30?
Use 30 for cooking and quick estimates (1.4% high); use 29.5735 when filling regulated sizes — medicine doses, lab work, or anything near the 100 ml travel limit.