Overview
Use this calculator to turn a total price and a quantity into a clear unit price. It helps when products are sold in different pack sizes, weights, volumes, or counts and you want a like-for-like comparison. Enter the total cost and the number of units, and the tool returns the price for one unit. This makes it easier to spot whether a larger pack is truly cheaper or just looks cheaper at first glance.
Use cases
- Compare two grocery packsCheck which cereal box, rice bag, or yogurt pack gives the lower cost per gram, litre, or item.
- Review supplier quotesCompare bulk prices for screws, paper, cleaning supplies, or raw materials using the same unit basis.
- Judge subscription bundlesWork out the cost per seat, per month, or per feature when vendors sell different package sizes.
How it works
- 1
Enter the total cost and the quantity.
- 2
The calculator divides cost by quantity to get a unit price.
- 3
Compare the result against other offers or pack sizes.
Examples
Price per kilogram
Input: 18.00 total cost, 1.5 kg
Output: 12.00 per kg
Shows how to convert a pack price into a kilogram rate for easy comparison.
Price per litre
Input: 7.49 total cost, 750 ml
Output: 9.99 per litre
Useful when two bottles have different volumes but you want the same unit basis.
Price per item
Input: 24.00 total cost, 8 items
Output: 3.00 per item
Helps compare multipacks, office supplies, or hardware sold by count.
FAQ
What if my quantity is in grams or millilitres?
Convert to the unit you want to compare first, or enter the quantity in that same unit so the result matches your comparison target.
Can I compare packs with different sizes directly?
Yes, as long as both results are converted to the same unit. For example, compare both packs per kilogram or per litre.
Why does my result look smaller than the shelf label?
Some labels show the total pack price, not the unit price. This calculator shows the cost for one unit of the measure you entered.
What mistake causes the wrong result most often?
Using the wrong quantity unit, such as entering 750 when the comparison should be per litre instead of per millilitre, will change the result.