Convert US Fluid Ounce to Millilitre

Quick answer: US Fluid Ounce to Millilitre

1 US Fluid Ounce = 29.57353 Millilitre (US fl oz → mL). To convert us fluid ounce to millilitre, multiply by 29.57353. To convert millilitre to us fluid ounce, multiply by 0.03381402. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common us fluid ounce-to-millilitre questions.

How to convert US Fluid Ounce to Millilitre

To convert us fluid ounce to millilitre, multiply the number of us fluid ounce by the conversion factor 29.57353, because 1 US fl oz = 29.57353 mL. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 mL = 0.03381402 US fl oz, so you divide by 29.57353 (or multiply by 0.03381402) to turn millilitre back into us fluid ounce.

mL = US fl oz × 29.57353  ·  US fl oz = mL × 0.03381402

1. Write down the value you want to convert, in us fluid ounce.
2. Multiply it by 29.57353.
3. The result is the same area/length/quantity expressed in millilitre.

US Fluid Ounce to Millilitre — worked examples

Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 us fluid ounce is 147.8676 millilitre because 5 US fl oz × 29.57353 = 147.8676 mL.

Common US Fluid Ounce to Millilitre conversions

These are the us fluid ounce-to-millilitre values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:

• 1 us fluid ounce = 29.57353 millilitre
• 2 us fluid ounce = 59.14706 millilitre
• 2.5 us fluid ounce = 73.93382 millilitre
• 3 us fluid ounce = 88.72059 millilitre
• 4 us fluid ounce = 118.2941 millilitre
• 5 us fluid ounce = 147.8676 millilitre
• 6 us fluid ounce = 177.4412 millilitre
• 7 us fluid ounce = 207.0147 millilitre
• 8 us fluid ounce = 236.5882 millilitre
• 9 us fluid ounce = 266.1618 millilitre
• 10 us fluid ounce = 295.7353 millilitre
• 12 us fluid ounce = 354.8824 millilitre
• 15 us fluid ounce = 443.6029 millilitre
• 20 us fluid ounce = 591.4706 millilitre
• 25 us fluid ounce = 739.3382 millilitre
• 30 us fluid ounce = 887.2059 millilitre
• 50 us fluid ounce = 1,478.676 millilitre
• 75 us fluid ounce = 2,218.015 millilitre
• 100 us fluid ounce = 2,957.353 millilitre
• 200 us fluid ounce = 5,914.706 millilitre
• 500 us fluid ounce = 14,786.76 millilitre
• 1000 us fluid ounce = 29,573.53 millilitre

US Fluid Ounce to Millilitre conversion chart (both directions)

The chart below converts us fluid ounce to millilitre and millilitre to us fluid ounce side by side, so it works whichever way you need. 1 us fluid ounce = 29.57353 millilitre, and 1 millilitre = 0.03381402 us fluid ounce.

US Fluid Ounce vs Millilitre: which is bigger?

A us fluid ounce is the larger unit: one us fluid ounce equals 29.57353 millilitres. Put another way, you need 29.57353 millilitres to make a single us fluid ounce.

What is a US Fluid Ounce? History, origin and usage

The US fluid ounce is one sixteenth of a US pint and one one-hundred-twenty-eighth of the US gallon, deriving from the Queen Anne wine gallon kept by the United States. It is the liquid cousin of the avoirdupois ounce of weight, the shared name reflecting their common medieval origin.

The US fluid ounce labels American drink containers, spirits pours, baby-bottle volumes and many recipe ingredients. It is the small liquid unit Americans use before stepping up to cups and pints.

The US fluid ounce is slightly larger than the imperial fluid ounce, by about four percent, because the two systems define their pints and gallons differently. A US fluid ounce of water weighs a little more than one avoirdupois ounce.

What is a Millilitre? History, origin and usage

The millilitre is the litre scaled by the metric prefix milli- (Latin mille, a thousandth), so it inherits the litre's origin in the 1795 French metric reforms. Because the litre was defined in relation to the metre, the millilitre became exactly one cubic centimetre when the litre was tied to the cubic decimetre. It has been part of the coherent metric vocabulary ever since the SI prefixes were standardised.

The millilitre is the workhorse small-volume unit almost everywhere outside the United States: medicine doses, syringes and IV bags, drink and food nutrition labels, perfume and cosmetics, and home cooking. Laboratories and pharmacies use it constantly for measuring liquids. In medicine the equivalent term cubic centimetre (cc) is still heard, especially for syringes.

One millilitre is identical in volume to one cubic centimetre, because a litre is exactly one cubic decimetre. A standard metric teaspoon is taken as five millilitres, which is why liquid-medicine dosing cups are graduated in millilitres rather than spoons.

Convert 1 US Fluid Ounce to other units

It can help to see a us fluid ounce next to the other units it is commonly compared with. One us fluid ounce (US fl oz) is equal to:

Convert 1 Millilitre to other units

One millilitre (mL) is equal to:

Tips for converting US Fluid Ounce to Millilitre

• To go from us fluid ounce to millilitre, multiply by 29.57353; to go back, divide by 29.57353 (or multiply by 0.03381402).
• For a quick mental estimate, remember that 1 us fluid ounce ≈ 29.57353 millilitre, so 10 us fluid ounce ≈ 295.7353 millilitre.
• The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
• Both fields update live as you type — change either side to convert in that direction.

How to use this US Fluid Ounce to Millilitre converter

Type a number into the US Fluid Ounce field and the equivalent in Millilitre appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Millilitre field to convert the other way (millilitre to us fluid ounce). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.

Accuracy and method

Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 US fl oz = 29.57353 mL), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for us fluid ounce-to-millilitre conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.

Sources

• NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary units. The inch, foot, yard and mile are defined exactly in metres by the 1959 international yard-and-pound agreement, so every imperial figure on this page is exact, not rounded.
• BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.

Watch the system: a <strong>US</strong> gallon, quart, pint and fluid ounce are <strong>not</strong> the same size as the <strong>imperial (UK)</strong> ones — a US gallon is 3.785 L while an imperial gallon is 4.546 L, and a US fluid ounce (29.57 mL) is slightly larger than an imperial fluid ounce (28.41 mL). The units on this page are labelled US or Imperial so the result is unambiguous.

Frequently asked questions

How many millilitre are in 1 us fluid ounce?

1 us fluid ounce = 29.57353 millilitre (mL). To convert any number of us fluid ounce to millilitre, multiply by 29.57353.

How do I convert us fluid ounce to millilitre?

Multiply the number of us fluid ounce by 29.57353. For example, 10 us fluid ounce = 10 × 29.57353 = 295.7353 millilitre, and 25 us fluid ounce = 739.3382 millilitre.

How many us fluid ounce are in 1 millilitre?

1 millilitre = 0.03381402 us fluid ounce. So to convert millilitre back to us fluid ounce, multiply by 0.03381402.

What is the formula to convert us fluid ounce to millilitre?

millilitre = us fluid ounce × 29.57353. The reverse formula is us fluid ounce = millilitre × 0.03381402.

How much is 100 us fluid ounce in millilitre?

100 us fluid ounce = 2,957.353 millilitre. (And 1000 us fluid ounce = 29,573.53 millilitre.)

Which is bigger, a us fluid ounce or a millilitre?

A us fluid ounce is larger: 1 us fluid ounce = 29.57353 millilitre.

Is this us fluid ounce to millilitre converter accurate?

Yes — every value is computed from the exact 29.57353 mL per US fl oz factor (not rounded look-up tables), and the factors are re-verified automatically on every update.

Can I convert millilitre to us fluid ounce too?

Yes. The converter works both ways — enter a value in either field. 1 millilitre = 0.03381402 us fluid ounce.

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