Convert Pounds to Grams
1 pound is 453.59 g. One pound is exactly 453.59237 grams.
One pound is 453.59237 grams. To convert pounds to grams, multiply by 453.59237; to go the other way, divide by 453.59237 or multiply by 0.0022046226. The factor is exact rather than rounded: it follows from NIST Handbook 44. Exactly 0.45359237 kilograms by international agreement, and sixteen ounces.
Factor checked against the defining standard · How we check
- Pounds × 453.59237
1 * 453.59237453.592 g
1 pound in every weight unit
| Unit | Value | Exact factor |
|---|---|---|
| ounces | 16 oz | × 16 |
| pounds (as entered) | 1 lb | — |
| stone | 0.07142857143 st | × 0.0714285714286 |
| US tons | 0.0005 ton | × 0.0005 |
| micrograms | 453,592,370 mcg | × 453,592,370 |
| milligrams | 453,592.37 mg | × 453,592.37 |
| centigrams | 45,359.237 cg | × 45,359.237 |
| grams | 453.59237 g | × 453.59237 |
| kilograms | 0.45359237 kg | × 0.45359237 |
| slugs | 0.03108095017 slug | × 0.0310809501716 |
| tonnes | 0.00045359237 t | × 0.00045359237 |
| carats | 2,267.96185 ct | × 2,267.96185 |
| troy ounces | 14.58333333 ozt | × 14.5833333333 |
| grains | 7,000 gr | × 7,000 |
| long tons | 0.0004464285714 LT | × 0.000446428571429 |
Factors are entered by hand from NIST Handbook 44 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert pounds to grams? The converter and the working
- 1.Take the measurement in pounds.
- 2.Multiply by 453.59237 — that is how many grams fit in one pound.
- 3.To go back the other way, divide by 453.59237, or multiply by 0.0022046226.
Worked example: 25 pounds to grams
- Formula
- lb × 453.59237 = g
- Arithmetic
- 25 × 453.59237 = 11,339.81 g
- Answer
- 25 lb = 11,339.81 g
The factor is exact, so this figure is exact too — only the display is rounded.
Pounds to grams conversion table
| Pounds | Grams |
|---|---|
| 1 lb | 453.59 g |
| 2 lb | 907.18 g |
| 3 lb | 1,360.78 g |
| 4 lb | 1,814.37 g |
| 5 lb | 2,267.96 g |
| 6 lb | 2,721.55 g |
| 7 lb | 3,175.15 g |
| 8 lb | 3,628.74 g |
| 9 lb | 4,082.33 g |
| 10 lb | 4,535.92 g |
| 12 lb | 5,443.11 g |
| 15 lb | 6,803.89 g |
| 20 lb | 9,071.85 g |
| 25 lb | 11,339.81 g |
| 50 lb | 22,679.62 g |
| 100 lb | 45,359.24 g |
| 200 lb | 90,718.47 g |
| 300 lb | 136,077.71 g |
| 500 lb | 226,796.19 g |
| 1000 lb | 453,592.37 g |
| 2000 lb | 907,184.74 g |
| 5000 lb | 2,267,961.85 g |
| 10000 lb | 4,535,923.7 g |
Exactly 453.59237 grams, since 1959 and by definition
The international avoirdupois pound was defined as 0.45359237 kg exactly by the 1959 yard and pound agreement, so this conversion terminates rather than rounding. It is the pound on a kitchen scale and in a shipping manifest. The troy pound of bullion is a different unit — twelve troy ounces, 373.24 g — and is lighter despite its ounce being heavier.
NIST — Refinement of values for the yard and the pound (Federal Register notice, 1959)
What is a pound?
Exactly 0.45359237 kilograms by international agreement, and sixteen ounces.
What is a gram?
One thousandth of a kilogram, and the unit nutrition labels use worldwide.
How many grams are in a pound?
One pound is 453.59237 grams, exactly. Going the other way, one gram is 0.0022046226 pounds. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every weight unit here
The whole group — 15 units with their symbols and the size of each one in kilograms — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a pound.
Cite this page
- APA
- Rule Calculator. (2026). Convert Pounds to grams. Rule Calculator. https://rulecalculators.com/convert/pound-to-gram
- MLA
- "Convert Pounds to grams." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/pound-to-gram.
- Chicago
- Rule Calculator. "Convert Pounds to grams." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/pound-to-gram.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many grams are in a pound?
- 453.59237. One thousandth of a kilogram, and the unit nutrition labels use worldwide.
- How do I convert grams back to pounds?
- Divide by 453.59237, or multiply by 0.0022046226 — they are the same operation.
Other weight conversions
Grams to pounds — the same conversion the other way.