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Pounds to Ounces (lb to oz)

Convert pounds to ounces: 1 lb = 16 oz. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

Formula

1 lb = 16 oz

ounces = pounds × 16 — reverse: pounds = ounces × 0.0625

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 lb = 80 oz
12.5 lb = 200 oz
100 lb = 1600 oz

Pounds to ounces conversion table

Pounds (lb)	Ounces (oz)
1	16
2	32
3	48
4	64
5	80
6	96
7	112
8	128
9	144
10	160
15	240
20	320
25	400
30	480
40	640
50	800
75	1200
100	1600
200	3200
250	4000
500	8000
1000	16000

FAQ

How many ounces are in one pound?

1 lb = 16 oz. 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 pounds to ounces?

Multiply the value in pounds by 16: ounces = pounds × 16. For example, 5 lb = 80 oz.

How do I convert ounces back to pounds?

Multiply by the inverse factor 0.0625 (pounds = ounces × 0.0625), or use the ounces-to-pounds page.

Related conversions

Ounces to pounds (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
Kilograms to Grams
Grams to Kilograms

Machine access

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