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Packaging Fill Volume and Weight Converter

Convert between U.S. fluid ounces of volume and U.S. avoirdupois ounces of product mass using a user-supplied product density in lb/ft³. Volume-to-mass formula: U.S. fl oz × (231/128) in³/fl oz × density / 1,728 in³/ft³ × 16 oz/lb; the reverse applies reciprocal factors. Density must match the product formulation and temperature and come from a supported specification or measurement; no density is assumed. Conversion factors: NIST Guide to the SI Appendix B, https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors.

Example values are prefilled to demonstrate the calculation. Replace them with values for your product, package, equipment, and operating conditions.

Inputs

Conversion direction, fill measure, and product density

Range: at least 0 U.S. fl oz

Enter a non-negative volume in U.S. fluid ounces. This is a volume measure, not a weight ounce; zero volume returns zero mass when density is valid.

Range: at least 0

Enter non-negative product mass in U.S. avoirdupois ounces, not fluid ounces. Zero mass returns zero equivalent volume when density is valid.

Range: at least 0 lb/ft³

Enter positive density in lb/ft³ from a product specification or measurement that matches the formulation and temperature being converted.

Result

Valid
Equivalent U.S. fluid volume
128.000 US fl oz
Equivalent product mass (U.S. avoirdupois oz)
133.467 U.S. oz
Conversion scope
Uses the entered density as constant for the product and condition. U.S. fluid ounces measure volume; U.S. avoirdupois ounces measure mass. This conversion does not determine a fill target, package net contents, density correction, or compliance.

Calculation

Equivalent U.S. fluid volume
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Equivalent product mass (U.S. avoirdupois oz)
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