Home › Unit Conversion › Stone to Pounds

Stone to Pounds (st to lb)

Convert stone to pounds: 1 st = 14 lb. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

Formula

1 st = 14 lb

pounds = stone × 14 — reverse: stone = pounds × 0.07142857143

The factor is derived from the SI definitions of both units (base unit: kg) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.

Worked examples

5 st = 70 lb
12.5 st = 175 lb
100 st = 1400 lb

Stone to pounds conversion table

Stone (st)	Pounds (lb)
1	14
2	28
3	42
4	56
5	70
6	84
7	98
8	112
9	126
10	140
15	210
20	280
25	350
30	420
40	560
50	700
75	1050
100	1400
200	2800
250	3500
500	7000
1000	14000

FAQ

How many pounds are in one stone?

1 st = 14 lb. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

What is the formula to convert stone to pounds?

Multiply the value in stone by 14: pounds = stone × 14. For example, 5 st = 70 lb.

How do I convert pounds back to stone?

Multiply by the inverse factor 0.07142857143 (stone = pounds × 0.07142857143), or use the pounds-to-stone page.

Related conversions

Pounds to stone (reverse)
Mass / Weight Converter — all mass units in one tool
Kilograms to Pounds
Pounds to Kilograms
Grams to Ounces
Ounces to Grams
Kilograms to Stone
Stone to Kilograms
Pounds to Ounces
Ounces to Pounds

Machine access

API: GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=st&to_unit=lb
MCP: server https://tttkmbb.com/mcp, tool convert_units with {"value":5,"from_unit":"st","to_unit":"lb"}
Markdown: https://tttkmbb.com/conversion/stone-to-lbs.md · JSON: https://tttkmbb.com/conversion/stone-to-lbs.json (add ?value= for a result) · Units: /api/v1/units?quantity=mass
OpenAPI operationId: convert_units. Freshness: static. Authentication: none.