How to Convert Ounces to Pounds (oz to lb)
Weight units matter at the wet market, where older stalls and Chinese medical halls still quote prices per kati or tael, and when following American recipes in ounces and pounds. This guide shows how to convert ounces into pounds by hand, with examples and a quick-reference table.
The conversion
To convert ounces to pounds, multiply the value by 0.0625. To go the other way, divide by the same number (or multiply by 16). For a quick estimate, multiply by about 0.062.
Pounds = ounces × 0.0625
Worked examples
- 3 oz = 0.1875 lb
- 12.5 oz = 0.78125 lb
- 75 oz = 4.6875 lb
Ounces to Pounds table
| Ounces | Pounds |
|---|---|
| 1 oz | 0.0625 lb |
| 2 oz | 0.125 lb |
| 5 oz | 0.3125 lb |
| 10 oz | 0.625 lb |
| 20 oz | 1.25 lb |
| 25 oz | 1.5625 lb |
| 50 oz | 3.125 lb |
| 100 oz | 6.25 lb |
| 250 oz | 15.625 lb |
| 500 oz | 31.25 lb |
| 1,000 oz | 62.5 lb |
Common questions
Is oz to lb exact?
The factors used here are the internationally defined values where they exist; results are rounded for display only.
How do I convert back?
Use the Pounds to Ounces converter.
Mistakes to avoid
Forgetting squared and cubed units
Area and volume factors are the length factor squared or cubed, so 1 m² is about 10.76 sq ft, not 3.28.
Dropping the units
A bare number without a unit is easy to misread later. Always write the unit with the result.
Rounding the factor too early
Using 3 instead of 3.28 for feet per metre introduces an error of almost 9% before you have started.
Background
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.
For any value, use the Ounces to Pounds Converter or browse all weight converters.
Run your own numbers: Ounces to Pounds Converter