Advanced Analysis
Cost of Downtime Calculator
The full financial impact of equipment failures — lost production, labour, parts, and penalties — to justify maintenance investment with data.
What is cost of downtime?
Cost of downtime quantifies the total financial impact when equipment or systems are unavailable. It goes beyond lost production to include repair costs, penalty fees, and secondary effects like overtime and expedited shipping.
- Justifies predictive maintenance investments
- Drives spare parts stocking decisions
- Prioritizes equipment upgrades
- Supports capital expenditure proposals
Cost components
| Component | What it covers |
|---|---|
| Production loss | Revenue lost during downtime hours |
| Labour | Maintenance technician time per repair |
| Parts & materials | Replacement components per repair event |
| Penalties | SLA violations, contractual fines, rush shipping |
Frequently asked questions
How do I estimate hourly production loss?
Take your annual revenue for the product line and divide by annual operating hours. For a $10M/year line running 24/7: $10,000,000 ÷ 8,760 ≈ $1,142/hour. Add margin for overtime, expediting, and customer impact.
How can I use this data to justify maintenance spending?
Compare total annual downtime cost against the cost of a preventive maintenance programme. If a $50,000 PM programme reduces failures by 30% and current downtime costs $200,000/year, the ROI is ($60,000 savings − $50,000 investment) ÷ $50,000 = 20%.