Fluid Ounces to Milliliters Converter (fl oz to mL)
Convert fluid ounces (fl oz) to milliliters (mL) instantly with real-time two-way calculation, exact formulas, and comprehensive reference tables.
Conversion Formula & Exact Calculation
How to convert Fluid Ounces to Milliliters: Multiply by 29.5735.
Fluid Ounces to Milliliters Quick Reference Table
| Fluid Ounces (fl oz) | Milliliters (mL) |
|---|---|
| 1/8 (0.125) fl oz | 3.696687 mL |
| 1/4 (0.25) fl oz | 7.393375 mL |
| 1/3 (0.333) fl oz | 9.857833 mL |
| 1/2 (0.5) fl oz | 14.78675 mL |
| 2/3 (0.667) fl oz | 19.715667 mL |
| 3/4 (0.75) fl oz | 22.180125 mL |
| 1 fl oz | 29.5735 mL |
| 1 1/2 (1.5) fl oz | 44.36025 mL |
| 2 fl oz | 59.147 mL |
| 2 1/2 (2.5) fl oz | 73.93375 mL |
| 3 fl oz | 88.7205 mL |
| 4 fl oz | 118.294 mL |
| 5 fl oz | 147.8675 mL |
| 10 fl oz | 295.735 mL |
| 25 fl oz | 739.3375 mL |
| 50 fl oz | 1,478.675 mL |
| 100 fl oz | 2,957.35 mL |
| 250 fl oz | 7,393.375 mL |
| 500 fl oz | 14,786.75 mL |
| 1,000 fl oz | 29,573.5 mL |
⚠️ 5 Fatal Metrology & Dimensional Analysis Traps
Unit conversion errors have historically caused catastrophic aerospace accidents, structural overloads, and pharmacological dosage failures. Watch out for these 5 traps:
Linear conversions do not scale linearly into area or volume. While 1 meter = 100 centimeters, 1 square meter = 10,000 cm² (100²), and 1 cubic meter = 1,000,000 cm³ (100³). Applying linear conversion ratios to surface area, HVAC ductwork, or tank volume causes severe 100× to 1,000× estimation errors.
US fluid ounces (29.57 mL) and British Imperial fluid ounces (28.41 mL) are different. Even more drastically, a US liquid gallon is 128 US fl oz (3.785 L), while a UK Imperial gallon is 160 UK fl oz (4.546 L)—a massive 20.1% volume discrepancy that causes critical miscalculations in aviation fueling and chemical synthesis.
Standard formulas (°F = °C × 1.8 + 32) apply strictly to absolute scale readings. When converting temperature differentials or temperature changes (ΔT), the +32 offset MUST be omitted: a temperature change of 1°C equals a change of exactly 1.8°F. Adding 32 to heat pump delta-T metrics, building insulation R-values, or thermal expansion calculations corrupts engineering calculations.
Hardware manufacturers sell storage in decimal SI prefixes (1 GB = 1,000,000,000 bytes = 10⁹), whereas operating systems like Windows calculate filesystem allocation in binary IEC prefixes (1 GiB = 1,073,741,824 bytes = 2³⁰). This causes a 1 TB drive to register as approximately 931 GB in OS file explorers, leading to unexpected disk partition shortfalls.
Truncating decimal places during intermediate conversion steps compounds floating-point error across multi-stage formulas. In aerospace telemetry, CNC metal fabrication, or pharmaceutical microgram compounding, conversions must retain full IEEE 754 64-bit double precision until final display formatting.