pound to ounce Converter
Convert lb to oz and back with a live reference table.
1 lb = 16 oz\n5 lb = 80 oz\n10 lb = 160 oz\n25 lb = 400 oz\n50 lb = 800 oz\n100 lb = 1600 oz
Why this conversion matters
Pounds and ounces are exact avoirdupois measures, useful for shipping weights, recipes, and product labels. The widget keeps the direction explicit so you can enter either side of the pair without doing the reciprocal by hand. It is built for quick checks where a calculator, specification sheet, recipe, map, or lab note uses the other unit.
For the default example, 2.5 lb converts to 40 oz. Switching the direction shows the inverse relationship, so 40 oz converts back to 2.5 lb with the same factor.
Formula and privacy note
The calculation uses 1 lb = 16 oz. Forward conversion multiplies by that factor, and reverse conversion divides by it. Results are rounded to six significant figures for readable estimates, so very small scientific units and large planning units stay scannable. Check the unit labels before copying a result, especially when similar abbreviations appear in the same project. The reference table is generated from the same constant, and everything runs locally in your browser.
Frequently Asked Questions
What factor does this converter use?
It uses the standard factor 1 lb = 16 oz, then applies the reciprocal for the reverse direction.
Why are results rounded?
The main result is rounded to six significant figures so very large and very small values stay readable while preserving the useful precision for quick checks.
Can I convert both directions?
Yes. Choose lb to oz or oz to lb from the direction menu and the output updates immediately.
Is this converter private?
Yes. The conversion runs entirely in your browser, and the value you enter is not uploaded or stored.
Browse the full set of free, private, in-browser tools.