Compare prices. Understand the real cost. Pay less. All of it, for free.
Compare price per unit/measurement
Find the real price per metre, kilogram, litre or unit. (For example: toilet paper A has 8 rolls of 20 m each; package B has 8 rolls of 25 m each.)
Product A
Product B
Product B is cheaper. You save US$ 0.01 per m — 12.5% less.
Product A: US$ 0.08/mProduct B: US$ 0.07/m
The result uses the prices and quantities you entered. Also consider quality, expiration date, waste, and the amount you will actually use.
Compare the cost of refill-based devices
See which option costs less and when the more expensive device starts paying off. (Capsule coffee machine, printer...)
Device A
Each use costs US$ 10.00
Device B
Each use costs US$ 3.00
Device B becomes cheaper after 15 uses. At this rate, after about 15 days, Device B becomes cheaper. After that, you save US$ 7.00 per use.
Cost per use — A: US$ 10.00B: US$ 3.00
The result is an estimate based on the prices and usage frequency you entered. Changes in prices or consumption may change the break-even point.
Compare cost per use
Find out which item pays off more per use — and how that answer can change depending on how long you plan to use each one. (For example: a $150 basic pair of sneakers that lasts 6 months vs. a $500 premium pair that lasts 5 years.)
Product A
Product B
Over each product's lifetime, Product B is cheaper per use — 66.7% less.
Product A: US$ 1.15/use Product B: US$ 0.38/useAfter about 1.5 years of use, Product B becomes the cheaper option per use.The result is an estimate based on the price, usage frequency, and durability you entered. The product's actual lifespan may change the cost per use.
Cost per use over time
Why does the chart form a “sawtooth”? The chart represents a repeated cycle of buying and using. When a product has to be replaced, the accumulated spending rises all at once and the average cost per use jumps. As the new item keeps being used, that average cost falls again until the next replacement.
Before you buy, look beyond the price
Articles to help you decide with more confidence, beyond the calculators.
Other interesting costs to consider
Energy, upkeep, accessories and the domino effect: what a purchase charges you after the price tag.
Read the articleBonus tipPlan your purchases strategically
How much to save each month, where to keep the money and how to negotiate before paying.
Read the article