Repair vs Replace Calculator
Decides whether repairing or replacing an item is the smarter financial move based on cost, remaining life, and failure risk.
Get a clear “Repair vs Replace” money decision
This calculator helps you decide whether paying for a repair is smarter than buying a replacement by comparing repair cost, replacement cost, and expected remaining life. It also factors in the risk that the same problem comes back soon after the repair. Use it for cars, appliances, electronics, tools, and equipment when you’re weighing a one-time repair expense against the next purchase.
Risk-adjusted value: repair is only “worth it” if it lasts
First, the tool computes the upfront cost gap (replacement cost − repair cost). Then it calculates a risk-adjusted “effective remaining life” for the repair: remaining life if repaired × (1 − repeat failure probability). It converts both choices into a cost-per-month (or cost-per-life-unit) metric and uses that, along with the risk-adjusted life benefit, to produce a verdict: Repair, Replace, or Borderline.
Why the probability of repeat failure can flip the result
Even a cheap repair can lose to replacement if the probability of repeat failure is high enough to make the risk-adjusted remaining life small. Conversely, a repair that costs more than you’d like can still be recommended if the expected repaired life is much better and the repeat failure probability is low. The remaining-life inputs should be on the same time scale (months vs. years) to keep the comparison meaningful.
What this calculator does NOT include
The decision is based on direct costs and remaining useful life only. It does not include downtime/inconvenience, resale value, safety risk, warranty coverage, or differences in labor quality between repair and replacement. If those factors are important for your situation, treat the calculator’s result as a financial baseline and add your real-world considerations on top.
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