What is the Cost Per Use?
Cost per use reframes a purchase from its sticker price to what it costs each time you actually use it. It is the single most useful test for discretionary spending, because it exposes both expensive mistakes and genuinely good value.
A ₹15,000 coat worn weekly for three years costs ₹104 a wear. The same coat worn five times costs ₹3,000 a wear. Same price, entirely different decisions.
Formula & worked example
Cost per use = Total cost / (uses per month × 12 × years)
Worked example: ₹15,000 used four times a month for three years = 144 uses, so ₹104 per use. If you only used it once a month, it would be ₹417 per use — four times more expensive for exactly the same purchase.
How to use this cost per use calculator
- Enter the purchase price.
- Be honest about uses per month — use your actual past behaviour, not intentions.
- Add running costs (servicing, consumables, subscriptions) and any resale value.
- Compare the cost per use against renting or simply doing without.
Smart tips
- Estimate usage from what you did last year, not from what you plan to do. Gym memberships fail this test most often.
- For items used under twice a month, renting or borrowing is usually cheaper.
- Factor resale value on durable goods — a phone sold after two years can cut cost per use by 30%.
- Quality that lasts three times longer at twice the price is still 33% cheaper per use.
Frequently asked questions
What is cost per use?
Total cost of ownership divided by the number of times you use something. It measures value far better than price alone.
What is a good cost per use?
It depends entirely on the item, but comparing it against the rental cost or a cheaper alternative gives you a clear benchmark.
Should I include running costs?
Yes. For cars, appliances and gadgets, servicing and consumables often exceed the purchase price over the item's life.
Does this work for subscriptions?
Very well. A ₹500 monthly service used twice costs ₹250 a use — the calculation that usually triggers a cancellation.
Want the theory behind the numbers? Read our spending guides on the Money Blog.
Written by Gurjeet Singh, Sharpen Solutions. Last reviewed 30 Sep 2026. How we check these numbers.