Grams to Pounds
Convert grams (g) to pounds (lb). Both measure mass and weight, and the conversion comes up in cooking, shipping, fitness work.
The Formula
``
pounds = grams × 0.00220462262185
grams = pounds × 453.59237
`
One gram is 0.002205 pounds, and one pound is 453.5924 grams.
Conversion Table
| Grams | Pounds |
|---|---|
| 1 g | 0.002205 lb |
| 2 g | 0.004409 lb |
| 5 g | 0.011023 lb |
| 10 g | 0.022046 lb |
| 25 g | 0.055116 lb |
| 50 g | 0.110231 lb |
| 100 g | 0.220462 lb |
| 500 g | 1.1023 lb |
| 1,000 g | 2.2046 lb |
The Other Direction
| Pounds | Grams |
|---|---|
| 1 lb | 453.5924 g |
| 2 lb | 907.1847 g |
| 5 lb | 2,267.96 g |
| 10 lb | 4,535.92 g |
| 25 lb | 11,339.81 g |
| 50 lb | 22,679.62 g |
| 100 lb | 45,359.24 g |
| 500 lb | 226,796.19 g |
| 1,000 lb | 453,592.37 g |
What Each Unit Is
Grams (g) — one thousandth of a kilogram. The metric unit for small masses; cooking, nutrition and postage all work in grams.
Pounds (lb) — exactly 0.45359237 kilograms, by the 1959 international agreement. The Roman libra — which is why its symbol is lb — refined through the English avoirdupois system.
A Sense of Scale
A paperclip is about 1 g- A sheet of A4 is 5 g
- A tennis ball is 58 g
- A bag of sugar is 2 lb
- A newborn is 6–9 lb
- US body weight is given in pounds
Precision
The factor 0.00220462262185 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.
In Code
`javascript
const gramToPound = (value) => value * 0.00220462262185;
``
Where This Conversion Comes Up
- Cooking
- Shipping
- Fitness
- Medicine
- Manufacturing
How Many Decimals Do You Need?
Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 g with the factor truncated at each decimal place:
| Decimals kept | Factor | 137 g becomes | Error |
|---|---|---|---|
| 0 | 0 | 0 | 100.0000% |
| 1 | 0 | 0 | 100.0000% |
| 2 | 0 | 0 | 100.0000% |
| 3 | 0.002 | 0.274 | 9.2815% |
| 4 | 0.0022 | 0.3014 | 0.2097% |
The right number of significant figures is set by your input, not by the converter. If you measured grams to three significant figures, the answer in pounds is only good to three — writing more digits claims precision the measurement never had.