Enter a liquid volume or dry weight to convert between fluid ounces and ounces using ingredient density.

Liquid Oz to Dry Oz Conversion Calculator

Enter exactly 1 value to calculate the other. Choose an ingredient (or use a custom density).


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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.

\mathrm{oz} = \mathrm{fl\,oz_{US}} \times 29.5735295625\,\frac{\mathrm{mL}}{\mathrm{fl\,oz}} \times \rho\,\frac{\mathrm{g}}{\mathrm{mL}} \times \frac{1\,\mathrm{oz}}{28.349523125\,\mathrm{g}}
  • 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

US fl oz to oz (weight), assuming water (ρ = 1.00 g/mL)
Fluid Ounces (US) Ounces (Weight)
0.50.522
11.043
22.086
44.173
66.259
88.345
1212.518
1616.691
2425.036
3233.382
* Assumes water at room temperature. For other ingredients, multiply by density (g/mL) relative to water.

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