Compare a repair quote with the price of a suitable replacement as a simple first-pass ratio.
Repair Cost Percentage Calculator
Formula
How to use the result
There is no universal percentage rule that determines the right decision. Use the ratio as one input alongside safety, reliability and expected remaining life.
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.