How to convert pounds to ounces
Useful when expressing customary mass in a smaller unit. CalcOS converts through the kilogram and keeps the exact international pound definition until display rounding.
oz = lb × 16
Worked example: 5 lb = 80 oz.
pounds to ounces conversion table
| pound (lb) | ounce (oz) |
|---|---|
| 1 | 16 |
| 5 | 80 |
| 10 | 160 |
| 16 | 256 |
| 25 | 400 |
| 100 | 1600 |
Mass is not force
Kilograms, grams, pounds, and ounces measure mass. Weight is technically the force gravity exerts on a mass and is measured in newtons in SI. Everyday language often says “weight converter,” but this calculator preserves the correct mass quantity.
Avoirdupois units
These pages use the international avoirdupois pound and ounce used for common goods and body mass. Troy ounces, used for precious metals, are a different unit and are not silently substituted.
Related mass conversions
- Kilograms to Pounds Converter
- Pounds to Kilograms Converter
- Grams to Ounces Converter
- Ounces to Grams Converter
Sources: BIPM SI Brochure and NIST Handbook 44, Appendix C. See the complete Weight and Mass guide.