CC to oz converter
One US fluid ounce is exactly 29.5735295625 cc, so a syringe reading or a lab volume in cc becomes the ounce figure on an American bottle or recipe card, without the rounded 30 ml shortcut. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Cc
- 100
- Result
- 3.3814022702 fl_oz
- Fl oz
- 3.3814022702
- Oz
- 3.3814022702
- From unit
- cc
A cubic-centimeter to US-fluid-ounce converter turns laboratory, medical, and engine-style cc readings into the fluid ounces printed on American bottles, syringes, and recipe cards. Approximate kitchen shortcuts such as “thirty millilitres per ounce” are rejected in favour of the legal gallon of 231 cubic inches and the international inch of 2.54 centimetres.
What cubic centimeters and US fluid ounces actually measure
A cubic centimeter, abbreviated cc or written cm³, is the volume of a cube one centimetre on each edge. By SI definition it is identical to one millilitre, which is why syringe barrels, motorcycle engine stamps, laboratory volumetric flasks, and many cosmetic droppers all use cc as a liquid-volume mark even when the surrounding copy talks in millilitres. A United States fluid ounce is a different legal unit: one hundred twenty-eight of them fill a US liquid gallon, and that gallon is defined as exactly two hundred thirty-one cubic inches.
Combined with the international inch of exactly 2.54 centimetres, the gallon is 3785.411784 cubic centimeters, so one US fluid ounce is exactly 29.5735295625 cubic centimeters. This converter implements that identity and nothing else: fluid ounces equals cubic centimeters divided by 29.5735295625. It does not use the rounded kitchen shortcut of thirty millilitres per ounce, does not switch to the imperial United Kingdom fluid ounce of 28.4130625 millilitres, and does not convert avoirdupois ounces of mass.
Searchers who type cc to oz converter almost always want this liquid-volume path—medical instructions, bottle labels, and lab notebooks—rather than a general multi-unit Swiss-army converter. Zero cubic centimeters maps to zero fluid ounces; any finite number, including a signed delta, is converted; non-finite values are rejected as invalid input.
Practical tips, checks, and related searches
Prefer sending bare numbers when you control the client; string numbers are accepted only when they match a strict finite numeric pattern without unit suffixes, thousand separators, or currency symbols. Round-trip sanity checks are easy: convert 29.5735295625 cubic centimeters and confirm you receive exactly one US fluid ounce after rounding, or convert one hundred cubic centimeters and confirm about 3.381402270189 fluid ounces. When teaching, pair this exact NIST path with the rounded thirty-millilitre kitchen rule so students see why laboratory notebooks and package labels disagree by a few percent.
Prefer this capability when the input is already in cubic centimeters and you only need US fluid ounces; if you must convert among many kitchen units in one call, use a broader volume converter instead.
What you can do with it
Syringe and medication labels
Clinics and caregivers convert a syringe reading in cc into US fluid ounces so patient instructions match bottle and cup markings without a rounded 30 ml guess.
Lab notebooks and quality checks
Technicians convert volumetric-flask or pipette volumes in cubic centimeters to US fluid ounces for bilingual datasheets and incoming-goods labels.
FAQ
What formula converts cc to US fluid ounces?
US fluid ounces = cubic centimeters ÷ 29.5735295625. That ounce size follows from 231 cubic inches per US gallon, 128 ounces per gallon, and the exact international inch of 2.54 cm.
Is 1 cc the same as 1 ml?
Yes. One cubic centimeter is exactly one millilitre, so a cc reading and a millilitre reading are interchangeable before this conversion to US fluid ounces.
Does this use US or imperial fluid ounces?
US customary fluid ounces only (29.5735295625 ml). The imperial (UK) fluid ounce is 28.4130625 ml and is not applied here.
Is the cc to oz converter free?
The in-browser converter is free and needs no account.
Why not just divide by 30?
Thirty millilitres per ounce is a rounded kitchen rule, and it leaves results off by a few percent. The converter divides by the exact 29.5735295625, so 100 cc gives 3.381402270184 US fluid ounces.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/conv/cc-to-oz-converter \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"cc":100}'const res = await fetch("https://api.kit.forhosting.com/conv/cc-to-oz-converter", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"cc": 100
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/conv/cc-to-oz-converter",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"cc": 100
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/conv/cc-to-oz-converter", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"cc":100}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"cc":100}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/conv/cc-to-oz-converter", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"cc": 100
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "conv.cc_to_oz_converter",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
Missing or non-finite input fails with invalid_input instead of inventing an ounce count.
How to call the API and what comes back
Keep the unit meaning explicit in your docs: cubic centimeters in, US fluid ounces out, not imperial fluid ounces and not ounces of weight. Send a JSON body with one required finite number field named cc. Aliases cubic_centimeters, cubic_centimetres, volume, value, cm3, and cubic_cm are accepted so SDK clients and form posts can use the name that fits the product. The value may arrive as a JSON number or as a strict numeric string; booleans, arrays, objects, empty strings, bare plus or minus signs, and non-numeric text all fail. On success the response echoes rounded cc, sets fl_oz, oz, and result to the same rounded US fluid-ounce magnitude, unit to the token fl_oz, from_unit to cc and to_unit to fl_oz, factor to the rounded reciprocal of 29.5735295625, cc_per_us_fl_oz to that exact ounce size after stable rounding, and formula to the printable identity fl_oz equals cc divided by 29.5735295625. Failed validation—missing fields, NaN, Infinity, or a conversion that is no longer finite—returns invalid_input naming the problem and is never charged. Pricing is a flat $0.002 per successful request with unit item.
Practical tips, checks, and related searches
Stay inside the IEEE finite range so the division cannot overflow into a non-finite result the solver must reject. This landing targets people searching for cc to oz converter, cubic centimeters to fluid ounces, or cc to US fl oz; it is not a general multi-unit volume hub, not an ounces-to-cc primary form, and not a cooking cup or tablespoon converter. Failed tasks that return invalid_input do not consume prepaid balance, which keeps exploratory scripts cheap when learners deliberately omit cc or pass plain text instead of a number.
Integration use cases
Deterministic tests for volume apps
Developers generate golden cc→fl oz pairs plus deliberate invalid-input rejections for unit tests, CI fixtures, and recipe or dosing pipelines.
Technical questions
What happens if the volume is not a finite number?
Missing cc, empty strings, NaN, Infinity, and non-numeric text return invalid_input. Failed tasks are not charged.