Cost per Day Calculator
Daily cost of any purchase over its life.
Calculate daily cost of any purchase over its expected useful life. Enter purchase price and years of use to see cost per day.
What this tool does
Enter purchase price and expected years of use. The tool shows cost per day.
Enter Values
Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
500 jacket worn 2 days a week for 5 years = 520 uses = 96p per use. Or 500/1825 days = 0.27/day. Reframes big purchases. Helps judge whether a 'worth it' premium makes sense. Works for any long-life purchase.
Run it with sensible defaults
Using purchase price of 500, expected years of use of 5, the calculation works out to 0.27. Nudge the inputs toward your own situation and the output recalculates instantly. The defaults are meant as a starting point, not a recommendation.
The levers in this calculation
The inputs — Purchase Price and Expected Years of Use — do not pull with equal force. Frequency and unit price pull the total in different directions. The biggest surprise for most people is how small recurring amounts compound into large annual figures — that's where this calculation earns its keep.
How the math works
Price divided by days of use. The working is transparent — you can verify every step yourself in the formula section below. No black box, no opaque "proprietary model".
Using the result to negotiate
The figure gives you a concrete number to quote when shopping alternatives. "I'm paying £X annually" cuts through marketing in a way "I want a better deal" doesn't. The specificity wins.
What this doesn't capture
Usage varies month-to-month; tariffs change; discounts come and go. The figure here is a clean baseline — your actual annual bill will fluctuate around it. Use the calculation to benchmark providers, not as a prediction of a specific bill.
Related calculations worth running
Plans get firmer when you triangulate. Alongside this one, the true cost of ownership calculator, the annual cost of habit calculator, and the coffee habit calculator tend to come up in the same conversations. Running two or three together exposes inconsistencies in any single assumption — which is usually where the useful insight lives.
Cost per day produces a daily figure based on the inputs provided.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
Price divided by days of use.
Frequently Asked Questions
Works for clothes?
Appliances?
Repairs and maintenance?
Resale value?
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