Pounds to Grams
Pounds to Grams (lb to g) Converter
Convert from
- Kilogramskg
- Poundslb
- Gramsg
- Milligramsmg
- Microgramsµg
- Tonnest
- Ouncesoz
- Stone (UK)st
- US short tonston (US)
- UK long tonston (UK)
- Troy ouncesoz t
- Grainsgr
- Caratsct
- Slugsslug
1 pound = 453.59 grams
Default is 5 significant figures. “Units typed as” decides what words like gallon, pint or cup mean when you type them. Scientific input such as 1e15 or 2.5e-3 works in the value box; type unit names or a whole conversion in the unit picker’s search.
- 1 lb = 453.59 g
- 5 lb = 2268 g
- 10 lb = 4535.9 g
- 25 lb = 11340 g
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How it’s calculated
Multiply pounds by 453.59237, the exact gram value of the avoirdupois pound used in both the US and the UK.
1 lb = 453.59237 g (exact) · 1 g ≈ 0.0022046226 lb
g = lb × 453.59237
- Multiply the value in pounds by 453.59237.
- To go back, divide by 453.59237 (or multiply by 0.002204622622).
- 1 lb = 453.59237 g · 1 g = 0.002204622622 lb
Step by step
Find the conversion factor
By definition 1 lb = 0.45359237 kg and 1 g = 0.001 kg, so 1 lb = 453.59237 g. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.).
Multiply by the factor written as a fraction
Put lb in the denominator so it cancels, leaving g.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 453.59 g
Formula: g = lb × 453.59237. Factors last reviewed 2026-10-27.
Pounds to grams conversion table
1 pound = 453.59 grams · 1 g = 0.0022046 lb
- 1 pound = 453.59 grams
- 5 pounds = 2,268 grams
- 10 pounds = 4,535.9 grams
- 25 pounds = 11,340 grams
- 100 pounds = 45,359 grams
| Pounds (lb) | Grams (g) |
|---|---|
| 0.1 lb | 45.359 g |
| 0.5 lb | 226.8 g |
| 1 lb | 453.59 g |
| 2 lb | 907.18 g |
| 3 lb | 1,360.8 g |
| 4 lb | 1,814.4 g |
| 5 lb | 2,268 g |
| 6 lb | 2,721.6 g |
| 7 lb | 3,175.1 g |
| 8 lb | 3,628.7 g |
| 9 lb | 4,082.3 g |
| 10 lb | 4,535.9 g |
| 15 lb | 6,803.9 g |
| 20 lb | 9,071.8 g |
| 25 lb | 11,340 g |
| 30 lb | 13,608 g |
| 40 lb | 18,144 g |
| 50 lb | 22,680 g |
| 75 lb | 34,019 g |
| 100 lb | 45,359 g |
| 250 lb | 113,400 g |
| 500 lb | 226,800 g |
| 1,000 lb | 453,590 g |
FAQ
How do I convert pounds to grams?
Use g = lb × 453.59237. Multiply the value in pounds by 453.59237.
How many grams are in 1 pound?
1 pound (lb) equals 453.59 grams (g); more precisely 453.59237.
How many pounds are in 1 gram?
1 gram (g) equals 0.0022046 pounds (lb); more precisely 0.002204622622.
What is 10 lb in g?
10 pounds = 4,535.9 grams.
What is a pound?
The everyday (avoirdupois) pound, defined as exactly 0.45359237 kg since 1959.
What is a gram?
Defined as exactly 1/1,000 of a kilogram.
About these units
Pound (lb)
US & imperial (identical)
1 lb = 0.45359237 kg (exact)
The everyday (avoirdupois) pound, defined as exactly 0.45359237 kg since 1959.
Source: NIST SP 811 / Handbook 44
Gram (g)
SI (metric)
1 g = 0.001 kg (exact)
Defined as exactly 1/1,000 of a kilogram.
Source: BIPM SI Brochure (9th ed.)