Milliliters to Fluid Ounces Converter - Convert mL to fl oz (US)
Convert with the exact identity fl oz = mL ÷ 29.5735295625. The reverse mapping is mL = fl oz × 29.5735295625. The calculator keeps full internal precision and switches to scientific notation only for extreme magnitudes.
Exact constant: 1 US fl oz = 29.5735295625 mL ⇒ 1 mL = 0.0338140227 fl oz. See all online free volume converters.
About Milliliters to Fluid Ounces (US)
Milliliters are the global SI standard for liquid volume. US fluid ounces are common in American menus, bottles, and kitchen measurements. Converting mL to fl oz helps you present metric data to US audiences without losing precision. The constant used here is the exact US definition, so results match regulatory and technical expectations when you publish labels or maintain QA logs.
When you prepare content for international readers, consider offering both mL and fl oz. Keep the exact constant in your source of truth and round once at the end for readability. This prevents compounding errors as recipes or datasets are edited and re-exported.
Milliliters to Fluid Ounces Formula
Exact relationship (SI → US customary)
fl oz = mL ÷ 29.5735295625
// inverse
mL = fl oz × 29.5735295625Reference anchors for quick checks:
30 mL ≈ 1.014 fl oz (~1 fl oz)
240 mL ≈ 8.115 fl oz (~8 fl oz, about 1 cup)
355 mL ≈ 12.004 fl oz (~12 fl oz can)
500 mL ≈ 16.907 fl oz (~17 fl oz)Related Volume Converters
What Are Milliliters and Fluid Ounces?
Milliliters (mL)
The milliliter is one-thousandth of a liter. It is widely used in healthcare dosing, lab protocols, and international packaging. Using mL simplifies calculations, aligns with SI instrumentation, and supports clear, comparable documentation.
US Fluid Ounces (fl oz)
The US fluid ounce is a unit of liquid volume used in cooking and beverages. It maps cleanly to kitchen measures such as cups, tablespoons, and teaspoons, making it practical for line execution and bar service.
Step-by-Step: Converting mL to fl oz
- Enter the volume in milliliters.
- Divide by 29.5735295625 to obtain US fluid ounces.
- Round once at presentation to match your label or menu style (e.g., 1 decimal place for consumer copy).
- Indicate “US fl oz” to distinguish from imperial fluid ounces in cross-border documents.
Example walkthrough:
Input: 500 mL
Compute: fl oz = 500 ÷ 29.5735295625 = 16.907012...
Output: ≈ 16.91 fl oz (rounded to 2 decimals)Applications and Context
International menus and packaging
Convert metric volumes to US fluid ounces so US readers can compare servings they recognize. Keep both units on spec sheets to reduce confusion.
Recipe development and bar operations
When source data is in mL, converting to fl oz allows accurate pours with US bar tools without rewriting the recipe in a new unit system.
Scientific and QA documentation
Storing metric values and publishing US customary equivalents maintains compliance in mixed-unit environments while preserving reproducibility.
Common Conversions (mL → fl oz)
| Milliliters (mL) | Fluid Ounces (US) |
|---|---|
| 30 | 1.01442 |
| 60 | 2.02884 |
| 120 | 4.05768 |
| 240 | 8.11537 |
| 355 | 12.00394 |
| 473 | 15.98573 |
| 500 | 16.90701 |
| 750 | 25.36052 |
| 946 | 31.98230 |
| 1000 | 33.81402 |
Quick Reference Table (Reverse: fl oz → mL)
| Fluid Ounces (US) | Milliliters (mL) |
|---|---|
| 1 | 29.5735295625 |
| 2 | 59.147059125 |
| 4 | 118.29411825 |
| 6 | 177.441177375 |
| 8 | 236.5882365 |
| 12 | 354.88235475 |
| 16 | 473.17647299999997 |
| 20 | 591.47059125 |
| 24 | 709.7647095 |
| 32 | 946.3529459999999 |
Precision, Rounding & Significant Figures
Operational rounding
Compute with exact constants and round once at final display. Select decimals that match audience needs and layout constraints.
Consistent documentation
Record the constant (29.5735295625 mL per US fl oz) and your rounding rules in SOPs and notebooks. Note the unit system as “US” when applicable.
Where This Converter Is Used
- Presenting metric volumes in US fluid ounce terms for US-facing materials.
- Converting lab and trial mL measurements into familiar bar or kitchen units.
- Creating bilingual labels and dashboards that serve both SI and US customary users.
- Teaching how SI quantities translate to common US serving sizes.
Frequently Asked Questions
What is the exact formula to convert milliliters to US fluid ounces?
Use fl oz = mL ÷ 29.5735295625. This constant reflects the US definition of the fluid ounce and is accepted for labeling, technical documentation, and scientific use.
How many US fluid ounces are in 500 mL?
500 ÷ 29.5735295625 ≈ 16.907 fl oz. Many menus round to 16.9 fl oz or 17 fl oz depending on their style guide.
Is this converter using US or imperial fluid ounces?
It uses US fluid ounces (≈29.57 mL). The imperial (UK) fluid ounce is ≈28.4130625 mL. Always check which system your source uses.
How should I round mL to fl oz for labels or menus?
Keep exact math internally and round once at final display. One decimal is common for menu copy; technical uses may keep more decimals.
Can I convert milliliters to both fluid ounces and cups?
Yes. Convert mL to fl oz by dividing by 29.5735295625, then to cups by dividing the fl oz result by 8 (US cup = 8 fl oz).
How many fluid ounces are in 355 mL (typical can size)?
355 ÷ 29.5735295625 ≈ 12.0039 fl oz, which is essentially 12 fl oz. This is why a 12-oz can is often labeled 355 mL internationally.
Does localization affect the milliliters to fl oz calculation?
No. Localization affects the display of numbers, not the arithmetic or constants.
What are quick anchors for mL to fl oz?
30 mL ≈ 1.014 fl oz (~1 fl oz), 240 mL ≈ 8.115 fl oz (~8 fl oz), 500 mL ≈ 16.907 fl oz (~17 fl oz), 1000 mL ≈ 33.814 fl oz.
Is this mapping linear for scaling batches and datasets?
Yes. The relationship is linear. Multiplying milliliters by any factor multiplies fluid ounces by the same factor.
How should I handle very small or large mL values?
The UI switches to scientific notation for extreme magnitudes while maintaining exact math internally, ensuring readable output and accurate exports.
Can I convert mL to fl oz and then to tablespoons or teaspoons?
Yes. After mL → fl oz, convert to tablespoons by ×2 (1 fl oz = 2 tbsp) and to teaspoons by ×6 (1 fl oz = 6 tsp) in US customary units.
Is this conversion acceptable for lab SOPs and QA records?
Yes. The constant is standardized. Include it alongside your rounding policy so others can reproduce your numbers exactly.
Tips for Working with mL & fl oz
- When publishing for US audiences, include both mL and fl oz to reduce confusion.
- Keep exact constants in the source of truth; round once at the end for readability.
- For mass conversions, use density rather than assuming mL equals grams.
- Call out “US fl oz” anywhere imperial measures might be assumed.