Cost Per Use Calculator

Cost Per Use divides Total Lifetime Cost by Expected Total Uses directly -- it doesn't matter how those uses are spread out over time. Uses Per Week only feeds the Cost Per Use Over Time chart, which shows how quickly the running cost-per-use declines week by week as you approach your Expected Total Uses, but the final Cost Per Use figure is the same regardless of pace.

A longer lifespan means more years of Annual Maintenance Cost accumulate, which does raise Total Lifetime Cost. But Daily Cost spreads that total across far more days -- and since the fixed Purchase Price gets divided over a longer stretch, the amortized daily cost of the purchase itself falls faster than the added maintenance raises it, so Daily Cost trends down as Expected Lifespan increases.

Excellent is under $1 Cost Per Use, Good is under $5, Fair is under $15, and anything at or above $15 per use is rated Poor. These thresholds are this calculator's own simplified categorization for quick comparison across purchases, not a published financial standard -- what counts as good value ultimately depends on the item and your own budget.

Purchase Price alone tells you what you paid, not what you got for it. Cost Per Use accounts for how many times you'll actually use the item and any ongoing Annual Maintenance Cost, so a cheap item you rarely use can have a worse Cost Per Use than an expensive item you use constantly -- it reframes the buying decision around value delivered per use rather than sticker price.

Annual Maintenance Cost is treated as a recurring yearly expense, multiplied by Expected Lifespan (years) to get its full contribution to Total Lifetime Cost -- so entering it represents the maintenance cost you expect every year the item is in use, not a one-time charge. A higher Annual Maintenance Cost or a longer Expected Lifespan both raise Total Lifetime Cost and, in turn, Cost Per Use.