liminfoUnit Price Calculator
Free web tool: Unit Price Calculator
Unit Price
$0.0120
Unit Price
$0.0140
About Unit Price Calculator
The Unit Price Calculator lets you compare the true cost of multiple products by calculating the price per unit of measure — such as price per gram, per ml, per sheet, or per serving. Enter any number of items with their total price, quantity, and unit. The calculator immediately divides price by quantity to produce a per-unit cost for each item and highlights the one with the lowest unit price in green, making it easy to identify the best value at a glance.
Savvy shoppers use unit price comparison when choosing between different package sizes at the supermarket — for example, comparing a 500 g pack at $3.49 versus a 1 kg pack at $5.99. Despite the larger upfront cost, the bigger pack may offer a lower cost per gram. The same logic applies to bulk buying for restaurants, comparing subscription tiers, evaluating wholesale versus retail pricing, and selecting between competing suppliers. Any scenario where the same product is sold in different quantities benefits from unit price analysis.
The tool starts with two pre-loaded example items and supports adding unlimited additional rows. Each row shows the calculated unit price in real time as you type. You can customise the unit label (g, kg, ml, L, pieces, sheets, etc.) to match whatever measure is relevant. Removing an item is as easy as clicking the remove button next to it. All computation runs in your browser — no data is sent to any server.
Key Features
- Calculates price per unit of measure for each item (price ÷ quantity)
- Automatically highlights the item with the lowest unit price in green
- Supports unlimited items — add as many comparison rows as you need
- Customisable unit label per item (g, kg, ml, oz, pieces, sheets, servings, etc.)
- Real-time calculation — unit prices update as you type price or quantity
- Remove any item with a single click once you have more than two rows
- 100% client-side processing — no data uploaded to any server
- Responsive layout works on desktop, tablet, and mobile for in-store use
Frequently Asked Questions
What is unit price and why does it matter?
Unit price is the cost per single unit of measurement — for example, price per gram, per ml, per serving, or per sheet. Comparing unit prices across different package sizes or brands reveals which product offers the best value regardless of how it is packaged. Retailers are required to display unit prices in many countries, but doing the calculation yourself gives you full control.
How is the unit price calculated?
Unit price = total price ÷ quantity. For example, a 500 g product costing $3.49 has a unit price of $3.49 ÷ 500 = $0.00698 per gram. A 1 kg product costing $5.99 has a unit price of $5.99 ÷ 1000 = $0.00599 per gram — the better value, despite costing more in total.
Can I compare items with different units?
The unit label is a text field for your reference only. The calculator divides price by quantity regardless of the label. To compare items with truly different units (e.g., grams vs. ounces), convert them to the same unit before entering them, or enter a consistent unit in the label for visual clarity.
How many items can I compare at once?
You can add as many items as you need by clicking the "+ Add Item" button. There is no limit. The best-value item is always highlighted in green among all the rows currently displayed.
What if I enter the same unit but different quantities?
That is exactly the intended use case. Enter the same unit (e.g., "g") for all items and enter the quantity as sold in each package. The calculator normalises all prices to cost per single unit, making them directly comparable regardless of package size.
Is this useful for bulk purchasing decisions?
Yes. Businesses and restaurants comparing wholesale packs of different sizes can enter each option as a row. The highlighted "Best" label instantly identifies the lowest cost per unit, which helps make data-driven purchasing decisions when negotiating with suppliers or choosing between distributors.
Can I use it to compare products sold by the piece vs. by weight?
You can, but you need to choose a common unit. For example, if eggs are sold by the dozen (12 pieces) and also individually, convert the dozen price to a per-egg price by entering quantity = 12. The calculator then shows cost per egg for both rows.
Does the calculator store my data?
No. All data entered in the Unit Price Calculator lives only in your browser session. Nothing is saved to a database, sent to a server, or accessible to anyone else. Closing the browser tab clears all entries.