Price per Weight Calculator

Enter a total price and weight (in your chosen unit) to find the price per weight unit. The Price per Weight Calculator divides your cost by the weight amount and returns the cost per gram, ounce, pound, or kilogram — useful for comparing grocery prices, precious metals, bulk goods, and more.

Enter the total price you paid or are comparing.

Enter the total weight of the product.

If buying multiple identical items, enter the quantity here.

Results

Price per Weight Unit

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Total Weight

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Price per 100g Equivalent

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Price per kg Equivalent

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Frequently Asked Questions

How do I calculate the price per weight?

Divide the total cost of the item by its total weight. For example, if a product costs $15 and weighs 500 grams, the price per gram is $15 ÷ 500 = $0.03 per gram. The formula is: Price per weight unit = Total cost ÷ Total weight.

How do I calculate the price per gram of an item?

To get the price per gram, divide the total price by the weight in grams. If you have the weight in another unit, convert it to grams first (e.g., 1 kg = 1000 g, 1 oz ≈ 28.3495 g). Then apply: Price per gram = Total price ÷ Weight in grams.

What is the per-gram price of 3g of gold at $250?

Divide $250 by 3 grams: $250 ÷ 3 ≈ $83.33 per gram. Enter 250 as the total price and 3 as the weight (in grams) in the calculator to confirm.

How do I calculate the cost per pound?

Divide the total cost by the total weight in pounds. For instance, a 60 lb item priced at $40 costs $40 ÷ 60 ≈ $0.67 per pound. Select 'Pounds (lb)' as the weight unit in this calculator and it will do the math for you.

What is the per-pound cost for a 60 lb item priced at $40?

$40 ÷ 60 lbs ≈ $0.6667 per pound. You can verify this by entering 40 as the total price, 60 as the weight, and selecting Pounds as the weight unit.

Why is comparing price per weight useful when shopping?

Retailers often sell the same product in different pack sizes at different prices. Comparing the price per gram or price per ounce lets you identify which size or brand offers better value, even when the quantities differ significantly.

How does the Number of Items field affect the result?

If you're buying multiple identical items — say, 4 packs each weighing 500g — enter 4 in the Number of Items field. The calculator multiplies the single-item weight by that quantity before dividing, giving you an accurate price per weight unit across the entire purchase.

Can I use this calculator for precious metals like gold or silver?

Yes. Enter the purchase price and the weight in your preferred unit (grams, ounces, kilograms, etc.). The calculator returns the cost per unit weight, which is the standard way to quote and compare precious metal prices.

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