Convert Ounce to Pound
1 ounce = 0.0625 pound (lb). For example, 10 ounce = 0.625 pound and 100 ounce = 6.25 pound. Type any value below to convert ounce to pound both ways — it runs entirely in your browser.
Quick answer: Ounce to Pound
1 Ounce = 0.0625 Pound (oz → lb). To convert ounce to pound, multiply by 0.0625. To convert pound to ounce, multiply by 16. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common ounce-to-pound questions.
How to convert Ounce to Pound
To convert ounce to pound, multiply the number of ounce by the conversion factor 0.0625, because 1 oz = 0.0625 lb. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 lb = 16 oz, so you divide by 0.0625 (or multiply by 16) to turn pound back into ounce.
lb = oz × 0.0625 ·
oz = lb × 16
- Write down the value you want to convert, in ounce.
- Multiply it by 0.0625.
- The result is the same area/length/quantity expressed in pound.
Ounce to Pound — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 ounce is 0.3125 pound because 5 oz × 0.0625 = 0.3125 lb.
| Ounce | Calculation | Pound |
|---|---|---|
| 1 oz | 1 oz × 0.0625 = 0.0625 lb | 0.0625 lb |
| 2 oz | 2 oz × 0.0625 = 0.125 lb | 0.125 lb |
| 3 oz | 3 oz × 0.0625 = 0.1875 lb | 0.1875 lb |
| 5 oz | 5 oz × 0.0625 = 0.3125 lb | 0.3125 lb |
| 7 oz | 7 oz × 0.0625 = 0.4375 lb | 0.4375 lb |
| 10 oz | 10 oz × 0.0625 = 0.625 lb | 0.625 lb |
| 12 oz | 12 oz × 0.0625 = 0.75 lb | 0.75 lb |
| 15 oz | 15 oz × 0.0625 = 0.9375 lb | 0.9375 lb |
| 20 oz | 20 oz × 0.0625 = 1.25 lb | 1.25 lb |
| 25 oz | 25 oz × 0.0625 = 1.5625 lb | 1.5625 lb |
| 50 oz | 50 oz × 0.0625 = 3.125 lb | 3.125 lb |
| 100 oz | 100 oz × 0.0625 = 6.25 lb | 6.25 lb |
Common Ounce to Pound conversions
These are the ounce-to-pound values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 ounce = 0.0625 pound
- 2 ounce = 0.125 pound
- 2.5 ounce = 0.15625 pound
- 3 ounce = 0.1875 pound
- 4 ounce = 0.25 pound
- 5 ounce = 0.3125 pound
- 6 ounce = 0.375 pound
- 7 ounce = 0.4375 pound
- 8 ounce = 0.5 pound
- 9 ounce = 0.5625 pound
- 10 ounce = 0.625 pound
- 12 ounce = 0.75 pound
- 15 ounce = 0.9375 pound
- 20 ounce = 1.25 pound
- 25 ounce = 1.5625 pound
- 30 ounce = 1.875 pound
- 50 ounce = 3.125 pound
- 75 ounce = 4.6875 pound
- 100 ounce = 6.25 pound
- 200 ounce = 12.5 pound
- 500 ounce = 31.25 pound
- 1000 ounce = 62.5 pound
Ounce to Pound conversion chart (both directions)
The chart below converts ounce to pound and pound to ounce side by side, so it works whichever way you need. 1 ounce = 0.0625 pound, and 1 pound = 16 ounce.
| Ounce → Pound | Pound → Ounce |
|---|---|
| 0.25 oz = 0.015625 lb | 0.25 lb = 4 oz |
| 0.5 oz = 0.03125 lb | 0.5 lb = 8 oz |
| 1 oz = 0.0625 lb | 1 lb = 16 oz |
| 2 oz = 0.125 lb | 2 lb = 32 oz |
| 3 oz = 0.1875 lb | 3 lb = 48 oz |
| 4 oz = 0.25 lb | 4 lb = 64 oz |
| 5 oz = 0.3125 lb | 5 lb = 80 oz |
| 6 oz = 0.375 lb | 6 lb = 96 oz |
| 7 oz = 0.4375 lb | 7 lb = 112 oz |
| 8 oz = 0.5 lb | 8 lb = 128 oz |
| 9 oz = 0.5625 lb | 9 lb = 144 oz |
| 10 oz = 0.625 lb | 10 lb = 160 oz |
| 12 oz = 0.75 lb | 12 lb = 192 oz |
| 15 oz = 0.9375 lb | 15 lb = 240 oz |
| 20 oz = 1.25 lb | 20 lb = 320 oz |
| 25 oz = 1.5625 lb | 25 lb = 400 oz |
| 30 oz = 1.875 lb | 30 lb = 480 oz |
| 40 oz = 2.5 lb | 40 lb = 640 oz |
| 50 oz = 3.125 lb | 50 lb = 800 oz |
| 75 oz = 4.6875 lb | 75 lb = 1,200 oz |
| 100 oz = 6.25 lb | 100 lb = 1,600 oz |
| 150 oz = 9.375 lb | 150 lb = 2,400 oz |
| 200 oz = 12.5 lb | 200 lb = 3,200 oz |
| 250 oz = 15.625 lb | 250 lb = 4,000 oz |
| 500 oz = 31.25 lb | 500 lb = 8,000 oz |
| 1000 oz = 62.5 lb | 1000 lb = 16,000 oz |
Ounce vs Pound: which is bigger?
A pound is the larger unit: one pound equals 16 ounces. Put another way, you need 16 ounces to make a single pound.
What is a Ounce? History, origin and usage
The ounce comes from the Latin uncia, meaning a twelfth part — originally a twelfth of the Roman libra. English later reorganised its weights around the avoirdupois system, in which the pound is divided into sixteen ounces rather than twelve, and that sixteenth is the ounce used for ordinary goods today.
Ounces are used for food packaging, recipes, letters and small parcels in the United States, and for some foods and postal rates in the United Kingdom. Recipe writers use them constantly for butter, flour and cheese.
The same Latin root uncia also gave English the word "inch" — a twelfth of a foot. Confusingly, the troy ounce used for gold is a different and heavier ounce, and a "fluid ounce" is a measure of volume, not weight at all.
What is a Pound? History, origin and usage
The pound descends from the Roman libra pondo — "a pound by weight". English kept "pound" from pondo and the abbreviation "lb" from libra, which is why the word and its symbol look unrelated. For centuries the pound differed between countries and even between trades. That ended on 1 July 1959, when the United States, United Kingdom, Canada, Australia, New Zealand and South Africa agreed a single international pound of exactly 0.453 592 37 kilograms.
The pound is the everyday weight unit in the United States and is still widely used in the United Kingdom for body weight, food and parcels. Body weight, groceries, baggage limits and shipping rates in the US are all quoted in pounds.
Because the 1959 agreement fixed the pound as an exact number of kilograms, every pound conversion on this site is exact rather than approximate. The same agreement fixed the yard at exactly 0.9144 metres — which is why it is known as the yard-and-pound agreement.
Convert 1 Ounce to other units
It can help to see a ounce next to the other units it is commonly compared with. One ounce (oz) is equal to:
| 1 Ounce equals | Unit |
|---|---|
| 0.02834952 kg | Kilogram |
| 28.34952 g | Gram |
| 28,349.52 mg | Milligram |
| 28,349,520 µg | Microgram |
| 0.00002834952 t | Tonne |
| 0.0002834952 q | Quintal |
| 0.0625 lb | Pound |
| 0.004464286 st | Stone |
| 0.00003125 ton (US) | Short ton |
| 0.00002790179 ton (UK) | Long ton |
| 0.9114583 oz t | Troy ounce |
| 437.5 gr | Grain |
| 141.7476 ct | Carat |
Convert 1 Pound to other units
One pound (lb) is equal to:
| 1 Pound equals | Unit |
|---|---|
| 0.4535924 kg | Kilogram |
| 453.5924 g | Gram |
| 453,592.4 mg | Milligram |
| 453,592,400 µg | Microgram |
| 0.0004535924 t | Tonne |
| 0.004535924 q | Quintal |
| 16 oz | Ounce |
| 0.07142857 st | Stone |
| 0.0005 ton (US) | Short ton |
| 0.0004464286 ton (UK) | Long ton |
| 14.58333 oz t | Troy ounce |
| 7,000 gr | Grain |
| 2,267.962 ct | Carat |
Tips for converting Ounce to Pound
- To go from ounce to pound, multiply by 0.0625; to go back, divide by 0.0625 (or multiply by 16).
- For a quick mental estimate, remember that 1 ounce ≈ 0.0625 pound, so 10 ounce ≈ 0.625 pound.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Ounce to Pound converter
Type a number into the Ounce field and the equivalent in Pound appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Pound field to convert the other way (pound to ounce). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 oz = 0.0625 lb), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for ounce-to-pound conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
Sources
- NIST Special Publication 811 — Guide for the Use of the SI — publishes the exact metric equivalents of the customary weight units. The 1959 international yard-and-pound agreement fixes the international avoirdupois pound at exactly 0.453 592 37 kilogram, and the ounce, stone, grain and both tons are defined as exact fractions or multiples of that pound — so every imperial weight on this page is exact, not rounded.
- BIPM — The International System of Units (SI Brochure) — the defining document for the SI, published by the International Bureau of Weights and Measures. It fixes the base unit that this conversion resolves to, which is why the factor here can be exact rather than approximate.
Weight factors here are exact, anchored to the kilogram: the international pound is exactly 0.45359237 kg, a stone is 14 pounds, a short ton is 2,000 pounds and a long ton is 2,240, a grain is 1/7000 of a pound and a metric carat is exactly 200 mg. So the live tool and every number on this page always agree.
Frequently asked questions
- How many pound are in 1 ounce?
- 1 ounce = 0.0625 pound (lb). To convert any number of ounce to pound, multiply by 0.0625.
- How do I convert ounce to pound?
- Multiply the number of ounce by 0.0625. For example, 10 ounce = 10 × 0.0625 = 0.625 pound, and 25 ounce = 1.5625 pound.
- How many ounce are in 1 pound?
- 1 pound = 16 ounce. So to convert pound back to ounce, multiply by 16.
- What is the formula to convert ounce to pound?
- pound = ounce × 0.0625. The reverse formula is ounce = pound × 16.
- How much is 100 ounce in pound?
- 100 ounce = 6.25 pound. (And 1000 ounce = 62.5 pound.)
- Which is bigger, a ounce or a pound?
- A pound is larger: 1 pound = 16 ounce.
- Is this ounce to pound converter accurate?
- Yes — every value is computed from the exact 0.0625 lb per oz factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert pound to ounce too?
- Yes. The converter works both ways — enter a value in either field. 1 pound = 16 ounce.