Pounds to Hectograms
An instant pounds-to-hectograms converter, with the formula and a reference table below.
| Pounds | Hectograms |
|---|---|
| 1 lb | 4.535924 hg |
| 2 lb | 9.071847 hg |
| 3 lb | 13.607771 hg |
| 5 lb | 22.679618 hg |
| 10 lb | 45.359237 hg |
| 25 lb | 113.398092 hg |
| 50 lb | 226.796185 hg |
| 100 lb | 453.59237 hg |
How to use
- Enter a value in the Pounds field.
- The Hectograms figure appears immediately — no button to press.
- Typing in the Hectograms field converts back to Pounds the same way.
- Use the reference table for the values that come up most often.
Pounds to Hectograms formula
To convert pounds to hectograms, multiply by 4.5359237.
hg = lb × 4.5359237
Why this factor: the pound and the hectogram are both defined against the kilogram, so dividing one definition by the other gives 4.5359237 directly. Both definitions are set out in full below.
To go the other way, divide by 4.5359237 — or use the Hectograms to Pounds converter, which is the same calculation reversed.
Worked example
Take 2 lb and multiply by the factor 4.5359237: the result is 9.071847 hg.
2 lb × 4.5359237 = 9.071847 hg
The converter above does this for any value you type, in either direction.
What is a pound?
The pound is the primary unit of weight in the United States.
Definition: Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.
Where it is used: Body weight, grocery and produce pricing, shipping rates, and gym weights in the US.
Worth knowing: This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
What is a hectogram?
A hectogram is 100 grams — one tenth of a kilogram.
Definition: Exactly 0.1 kilogram by SI prefix definition.
Where it is used: Seen on Italian and some other European food labels and deli scales, where prices are quoted per 'etto'.
Pounds vs Hectograms
The pound is an imperial unit while the hectogram is a metric unit. That is why the factor between them is not a round number: the two systems were defined independently and only later tied together by exact agreement.
Frequently asked questions
How many hectograms are in a pound?
One pound equals 4.5359237 hectograms.
What is the formula to convert pounds to hectograms?
Multiply the number of pounds by 4.5359237. To reverse it, divide by 4.5359237 instead.
How do I convert hectograms back to pounds?
Divide by 4.5359237, which is the same as multiplying by 0.220462262.
How many hectograms are in 10 pounds?
10 lb works out to 45.359237 hg.
Is there anything to watch out for with pounds?
This is the avoirdupois pound. The troy pound used for precious metals is different (about 373 g).
How is the pound defined?
Exactly 0.45359237 kilogram since the 1959 International Yard and Pound Agreement — an exact definition, not a rounded one.