Estimate how many added years a repair would need to match the annualized purchase cost of a replacement.
Break-Even Added Life Calculator
Formula
How to use the result
This ignores differences in operating cost, risk, downtime and future repairs, which should be considered separately when material.
What the calculator does not know
This site does not diagnose faults or provide repair instructions. Stop using items that may be unsafe, recalled, electrically hazardous, fire-damaged, structurally compromised, leaking dangerous substances or otherwise safety-critical, and follow manufacturer, recall-authority and qualified service-professional guidance.
Improve the estimate
Keep the inputs used for the decision and compare the estimate with actual results. A simple calculator is most useful when it makes the assumptions visible enough to learn from the difference.