Convert volume to mass or mass to volume using ingredient density, with US or Imperial fluid ounces, cups, grams and pounds. Preset ingredient densities are rough estimates.
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Liquid Oz to Dry Oz Formula
The following formula converts US fluid ounces to ounces (weight) using density in g/mL; swap the 29.5735 constant with 28.4131 for Imperial fl oz.
- US fluid ounce = 29.5735295625 mL
- Imperial (UK) fluid ounce = 28.4130625 mL
- Ounce (avoirdupois) = 28.349523125 g
- Pound = 16 oz = 453.59237 g
- Density ρ in g/mL (examples): water 1.00; olive oil ~0.92; honey ~1.42; all-purpose flour ~0.53.
Liquid Oz to Dry Oz Conversion Table
| Fluid Ounces (US) | Ounces (Weight) |
|---|---|
| 0.5 | 0.522 |
| 1 | 1.043 |
| 2 | 2.086 |
| 4 | 4.173 |
| 6 | 6.259 |
| 8 | 8.345 |
| 12 | 12.518 |
| 16 | 16.691 |
| 24 | 25.036 |
| 32 | 33.382 |
| * Assumes a rounded density of exactly 1.00 g/mL for this table. Real water density varies with temperature. For other ingredients, multiply table masses by the numerical density in g/mL. | |
How do you convert liquid ounces to dry ounces? Multiply US fl oz by 29.5735295625 mL/fl oz, multiply by the ingredient’s density (g/mL), then divide by 28.349523125 g/oz; for Imperial fl oz use 28.4130625 mL/fl oz instead.
How do you convert dry ounces to liquid ounces? Multiply ounces by 28.349523125 g/oz, divide by density (g/mL), then divide by 29.5735295625 (US) or 28.4130625 (Imperial) to get fl oz.
Example Problem
Convert 12 US fl oz of honey to ounces (weight).
Use the formula with ρ = 1.42 g/mL (typical honey): oz = fl oz × 29.5735 × ρ ÷ 28.3495.
oz ≈ 12 × 29.5735 × 1.42 ÷ 28.3495 ≈ 17.78 oz
