From
To
Learn more about
Ounces to stone: exact avoirdupois chain, step-by-step examples, conversion chart, and UK body-weight tips
Conversion formula
Verification: factors follow standard unit definitions; round for display only.
Quick reference chart
| Ounce | Stone |
|---|---|
| 1 | 0.004464 |
| 2 | 0.008929 |
| 3 | 0.013393 |
| 4 | 0.017857 |
| 5 | 0.022321 |
| 6 | 0.026786 |
Educational explanation
Ounces to stone
Convert oz to st when a US nutrition label, postal receipt, or recipe lists avoirdupois ounces but a UK scale, NHS form, or stone-and-pound conversation expects stone.
One stone equals 14 pounds, and each pound is 16 ounces. Therefore 1 st = 224 oz exactly. With catalog Stone = 6.35029318 kg and Ounce = 0.028349523125 kg:
stone = ounces ÷ 224 · equivalently st = oz × 0.00446429
The calculator uses the same catalog graph. Avoirdupois only—not troy ounces.
Step-by-step conversion (worked example 1)
Convert 224 oz to stone—one stone anchor:
- 224 ÷ 224 = 1 st
- kg: 224 × 0.028349523125 = 6.35029318 kg ✓
Step-by-step conversion (worked example 2)
Convert 2464 oz to stone—11 stone:
- 2464 ÷ 224 = 11 st
- Check: 11 st = 154 lb = 2464 oz ✓
Step-by-step conversion (worked example 3)
Convert 7 oz—remainder pounds on a UK scale (0 st 7 lb):
- 7 ÷ 224 = 0.03125 st
- As mixed: 0 st 7 lb (7 oz remainder after whole stone × 224)
Quick mental estimate (no calculator)
Divide ounces by 224 for stone. Example: 2240 oz → 10 st. For body weight, convert to pounds first (÷ 16), then ÷ 14 for stone.
Ounce to stone conversion chart
| Ounces (oz) | Stone (st) | Pounds (lb) | Typical context |
|---|---|---|---|
| 1 oz | ≈ 0.00446 st | 0.0625 lb | Small food portion |
| 16 oz | ≈ 0.0714 st | 1 lb | One pound |
| 224 oz | 1 st | 14 lb | Definition anchor |
| 2240 oz | 10 st | 140 lb | UK fitness milestone |
| 2464 oz | 11 st | 154 lb | Mid-range UK adult |
Where oz → st comes up
- US food data vs UK weight: Recipe or label in oz compared to patient weight in stone.
- Mixed units: Total oz from US sources converted to st for NHS templates.
- Remainder ounces: 7 oz in a stone-and-pound display = 0 st 7 lb, not 7 st.
Stone to ounces
Convert st to oz when a UK scale shows stone but US nutrition or shipping math expects ounces.
Multiply stone by 224. For mixed stone-and-pound readings, multiply whole stone by 224 and add remainder pounds × 16.
ounces = stone × 224 · 12 st 7 lb = (12 × 224) + (7 × 16) oz
Step-by-step conversion (worked example)
Convert 12 st 7 lb to total ounces:
- Whole stone: 12 × 224 = 2688 oz
- Remainder: 7 × 16 = 112 oz
- Total: 2688 + 112 = 2800 oz (175 lb)
Quick reference (st → oz)
| Stone (st) | Ounces (oz) | Typical context |
|---|---|---|
| 1 st | 224 oz | Definition anchor |
| 10 st | 2240 oz | UK fitness milestone |
| 11 st | 2464 oz | Mid-range UK adult |
See stone to ounces.
Units compared, common mistakes, and related tools
Stone chains through pounds (14) and ounces (16)—224 oz per stone is exact.
Ounce vs stone at a glance
| Topic | Ounce (oz) | Stone (st) |
|---|---|---|
| System | Avoirdupois (US/UK small mass) | UK body weight |
| Exact relationship | 224 oz = 1 st | 1 st = 14 lb = 224 oz |
| Catalog kg factor | 1 oz = 0.028349523125 kg | 1 st = 6.35029318 kg |
| Primary use | Food, parcels, recipes | UK/Ireland body weight |
Common mistakes to avoid
- Dividing by 16 only—that gives pounds, not stone. After lb, divide by 14.
- Treating 7 oz as 7 st—7 oz is 0 st 7 lb remainder, not seven stone.
- Troy ounces—not 224 troy oz per stone; use avoirdupois.
Related weight converters
See stone to ounces, ounces to pounds, and stone to pounds.
Frequently asked questions
What is the formula to convert ounces to stone?
stone = ounces ÷ 224. Example: 224 oz = 1 st exactly.
What is the formula to convert stone to ounces?
ounces = stone × 224. Example: 11 st = 2464 oz.
How many ounces are in 1 stone?
Exactly 224 oz (14 lb × 16 oz/lb).
How many stone are in 224 ounces?
224 oz = 1 st exactly.
How do I convert 175 pounds to stone using ounces?
175 lb = 2800 oz; 2800 ÷ 224 = 12.5 st = 12 st 7 lb.
What is 11 stone in ounces?
11 st = 2464 oz (11 × 224).
Is ounce to stone conversion exact?
Yes for avoirdupois units. 1 st = 14 lb = 224 oz by definition chain.
Can I convert oz to st via pounds?
Yes: oz ÷ 16 = lb, then lb ÷ 14 = st. Same as oz ÷ 224.
What is 16 ounces in stone?
16 oz = 1 lb = 1/14 st ≈ 0.0714 st.
Does the US use stone?
No for body weight. Stone is UK/Ireland; ounces appear on US labels.
Are troy ounces used for stone?
No. Body weight and stone use avoirdupois ounces (224 per stone).
What is 7 ounces in stone?
7 oz = 7/224 st = 0.03125 st—the remainder in 0 st 7 lb notation.
Popular conversions