Convert Ounce to Pound
Convert ounces to pounds instantly. 1 ounce = 0.0624999999 pound — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Pound to Ounce converter for the reverse conversion.
Units explained
Ounce
The (avoirdupois) ounce (oz) equals one-sixteenth of a pound, about 28.35 grams.
From Latin 'uncia', meaning a twelfth part.
US food portions, postal weights, and boxing weight classes.
Standardized as 1/16 of the international pound from 1959.
Pound
The pound (lb) is a unit of mass equal to exactly 0.45359237 kilogram.
From Latin 'libra pondo' (a pound by weight); the symbol lb comes from 'libra'.
The primary weight unit in the United States and informally in the UK.
The international avoirdupois pound was fixed in the 1959 yard-and-pound agreement.
Ounce to Pound conversion formula
The relationship between ounces and pounds:
To convert ounces to pounds, multiply the value in ounces by 0.0624999999. To reverse, multiply pounds by 16.0000000141.
How to use this converter
Type a value into the calculator. The result in pounds updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Pound to Ounce converter for the reverse direction.
Step-by-step: convert ounces to pounds
- Write down the value in ounces (oz).
- Multiply that value by the factor 0.0624999999.
- The product is the equivalent value in pounds (lb).
- To reverse, multiply the pound value by 16.0000000141.
Worked examples
Example 1 — Convert 1 oz to lb:
1 × 0.0624999999 = 0.0624999999 lb
Example 2 — Convert 100 oz to lb:
100 × 0.0624999999 = 6.2499999945 lb
Real-world example — Children's height milestones
A 150-ounce-tall child measures a value in pounds that's commonly used for theme-park ride height requirements when travelling between countries that use different measurement units.
150 oz × 0.0624999999 = 9.3749999917 lb
Real-world example — Body height conversion
You enter your height as 180 ounces into an international job or visa application. The form then asks for the same value in pounds — converting between these adjacent units is one of the most-used length conversions globally.
180 oz × 0.0624999999 = 11.2499999901 lb
Real-world example — Furniture and large objects
A 72-ounce piece of furniture converts to a value in pounds that's easier to mentally compare with room dimensions. This is the typical workflow when shopping internationally and product specs use a different unit than your room measurements.
72 oz × 0.0624999999 = 4.499999996 lb
Ounce to Pound conversion table
Standard reference values for converting ounces to pounds:
| Ounce [oz] | Pound [lb] |
|---|---|
| 0.01 | 0.000625 |
| 0.1 | 0.00625 |
| 1 | 0.0624999999 |
| 2 | 0.1249999999 |
| 3 | 0.1874999998 |
| 4 | 0.2499999998 |
| 5 | 0.3124999997 |
| 10 | 0.6249999994 |
| 20 | 1.2499999989 |
| 30 | 1.8749999983 |
| 40 | 2.4999999978 |
| 50 | 3.1249999972 |
| 100 | 6.2499999945 |
| 500 | 31.2499999724 |
| 1000 | 62.4999999449 |
Frequently asked questions
How many pounds is 1 ounce?
How do I convert ounces to pounds?
How do I convert pounds back to ounces?
How many pounds is 100 ounces?
Popular weight unit conversions
Convert Ounce to other weight units
Show all Ounce conversions
Metric / SI (18 units)
Avoirdupois (14 units)
Troy & Apothecary (10 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 oz = 0.0624999999 lb) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.