Price Per kg To Price Per lb
The label says 8.50 a kilogram, the sign next door says 3.99 a pound, and one division settles which is cheaper.
Quick answer: divide the price per kilogram by 2.20462. So 10.00 per kg is 4.54 per lb, and 8.50 per kg is 3.86 per lb.
The price per kilogram to price per pound formula
A pound weighs 0.45359237 kg, so each pound costs about 45 percent of the price of a kilogram.
Divide the price per kilogram by 2.20462262, or multiply it by 0.45359237, to get the price per pound.
For 10.00 per kg, 10 ÷ 2.20462 is 4.54 per lb.
For 8.50 per kg, 8.50 ÷ 2.20462 is 3.86 per lb.
Why unit prices matter
A unit price states the cost per standard quantity, so products sold in different units can be compared fairly (Wikipedia: Unit price).
Most of the world prices food by the kilogram, while the United States prices it by the pound.
The pound is defined as exactly 0.45359237 kg (Wikipedia: International yard and pound).
How to convert price per kg to price per lb step by step
- Write down the price per kilogram.
- Divide it by 2.20462262.
- Round to two decimals for money.
- Label the answer as price per pound in the same currency.
Example 1: cheese at 10.00 per kg
- Start with 10.00 per kg.
- 10 ÷ 2.20462 = 4.5359.
- Round to the cent.
10.00 per kg = 4.54 per lb
Example 2: fish at 8.50 per kg
- Start with 8.50 per kg.
- 8.5 ÷ 2.20462 = 3.8555.
- Round to the cent.
8.50 per kg = 3.86 per lb
Example 3: coffee at 30.00 per kg
- Start with 30.00 per kg.
- 30 ÷ 2.20462 = 13.608.
- Round to the cent.
30.00 per kg = 13.61 per lb
The currency stays the same, because only the weight unit changes.
price per kg to price per lb conversion table
| Price per kilogram | Price per pound | Price per ounce |
|---|---|---|
| 2 per kg | 0.91 per lb | 0.057 per oz |
| 5 per kg | 2.27 per lb | 0.142 per oz |
| 8.5 per kg | 3.86 per lb | 0.241 per oz |
| 10 per kg | 4.54 per lb | 0.283 per oz |
| 12.5 per kg | 5.67 per lb | 0.354 per oz |
| 15 per kg | 6.8 per lb | 0.425 per oz |
| 20 per kg | 9.07 per lb | 0.567 per oz |
| 30 per kg | 13.61 per lb | 0.85 per oz |
| 50 per kg | 22.68 per lb | 1.417 per oz |
The highlighted row is 10.00 per kg, which is 4.54 per lb or 0.28 per oz. The last column helps with per-ounce shelf labels.
A quick mental shortcut for price per kg to lb
Halve the price per kilogram, then take off about 10 percent of that half. So 10.00 per kg becomes 5.00 minus 0.50, which is 4.50.
The answer is always a little under half the price per kilogram.
Comparing shops that use different units
When one label shows a price per kilogram and another a price per pound, convert one of them first. Compare 8.50 per kg with 3.99 per lb by turning the first into 3.86 per lb.
In that case the kilogram shop is cheaper.
Price per kg to lb for travellers and importers
Visitors to the United States see per-pound prices that look low next to home prices per kilogram. Converting back puts both on the same footing.
Importers use the same step when a supplier quotes per kilogram and a buyer budgets per pound.
Checking your answer
Multiply the pound price back by 2.20462 to recover the kilogram price. If 4.54 gives 10.00, the conversion is right.
The pound price should always be a little under half the kilogram price.
A meat counter example
Meat at 12.00 per kg is 5.4431 per lb. A pack that costs 9.00 per lb is the more expensive choice.
A bulk bag example
A 5 kg bag at 18.00 costs 3.60 per kg, which is 1.6329 per lb.
This lets you compare it with a 10 lb bag priced in pounds.
The currency does not matter
The conversion only changes the weight unit. It works the same in any currency, so you can use it for dollars, pounds or euros.
Convert prices before you compare shops, not after.
Fish and produce
Fish at 20.00 per kg is 9.0719 per lb. Tomatoes at 3.50 per kg are 1.5876 per lb.
Round only at the end, so small errors do not build up when you compare several items.
Checking a shop receipt
A receipt may show the weight in kg and the price per kg. Divide the total by the weight to confirm the unit price, then convert it if you want to compare with a shop that sells by the pound.
Quick conversion answers
| Conversion | Result |
|---|---|
| 2.00 per kg to per lb | 0.91 per lb |
| 5.00 per kg to per lb | 2.27 per lb |
| 8.50 per kg to per lb | 3.86 per lb |
| 10.00 per kg to per lb | 4.54 per lb |
| 20.00 per kg to per lb | 9.07 per lb |
| 50.00 per kg to per lb | 22.68 per lb |
Where this conversion is used
Shoppers compare unit prices across stores and countries.
Cooks and caterers budget for bulk meat, produce and dry goods.
Importers and travellers convert quotes between kilograms and pounds.
Common mistakes to avoid
- Multiplying instead of dividing. A pound is lighter, so its price is lower.
- Dividing by 2.0. That overstates the price by about 10 percent.
- Mixing currencies. Convert the weight unit only.
- Rounding early. Round only the final price.
Related converters
Frequently asked questions
How do I convert price per kilogram to price per pound?
Divide the price per kilogram by 2.20462.
What is 10.00 per kg in price per lb?
4.54 per lb.
Why is the price per lb lower than per kg?
Because a pound weighs less than half a kilogram.
Is 8.50 per kg cheaper than 3.99 per lb?
Yes. 8.50 per kg is about 3.86 per lb, so it is slightly cheaper.
Does the currency change the formula?
No. Only the weight unit changes.
How many kilograms are in a pound?
Exactly 0.45359237 kg.
Sources
- Wikipedia: Unit price (en.wikipedia.org)
- Wikipedia: International yard and pound (en.wikipedia.org)
- Wikipedia: Ounce (en.wikipedia.org)
