Act on the result
Prioritise the failure mode with the largest controllable expected cost and recovery time.
Educational only: Business decision support, not accounting, tax or legal advice.
Privacy: No account is required. Tool inputs and results stay in this browser. Anonymous categorical usage analytics send only governed page, tool, cluster and action identifiers; tool inputs and results are never sent. Error monitoring is disabled. Optional saved state stays only on this device.
Update policy: Reviewed when formulas or official dependencies change.
Scope: Market-neutral small-business planning using your own assumptions.
What this planner helps you decide
Best for
Operators quantifying the economics of a specific downtime event or recurring period.
Outputs
Lost contribution, idle labour, recovery cost and total downtime cost.
Start here
Enter the unavailable time, affected throughput and incremental recovery effort on one consistent period.
Use a different tool when: Do not use this to test the savings, capacity value and payback of a process improvement; use Process Improvement Payback Planner for that decision. Use this tool to quantify the contribution, labour and recovery cost of operational downtime.
Profit & break-even
Operational Downtime Cost: lost contribution
Lost contribution, idle labour, recovery cost and total downtime cost.
Amounts use the same currency as your inputs. No currency conversion is performed.
Operational Downtime Cost
Reconcile lost contribution, idle labour, recovery cost and recoverable contribution to estimate the net impact of an operational interruption.
Your numbers stay in this browser
Enter the hours the operation was or may be unavailable.
Enter revenue less avoidable operating cost normally earned per hour. Use one consistent ex-tax currency basis.
Enter labour cost that continues during downtime. Use one consistent ex-tax currency basis.
Enter repair, restart or recovery expenditure attributable to the incident. Use one consistent ex-tax currency basis.
Enter the share of lost contribution expected to be recovered later.
Decision result
Review the operating threshold and incremental comparison on the same entered capacity, cost and demand basis.
- Lost contribution
- 1,000.00
- Idle labour cost
- 200.00
- Total downtime cost before recovery
- 1,250.00
- Recovered contribution
- 250.00
- Net downtime impact
- 1,000.00
Scenario comparison
Each row names the assumption axis changed from the baseline.
ScenarioResultDifference
Entered scenario1,000.00Baseline
Lower Contribution recovery rate1,025.0025.00
Higher Contribution recovery rate975.00-25.00
Save these results, change an input, then compare the updated figures with this baseline.
The baseline is temporary in this tab and is not added to shared scenario links or generated reports.
Calculation details
View calculation detailsView the formulas and inputs used for these results.
Lost contribution
Lost contribution
downtime hours × contribution per operating hour1,000.00Result1,000.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Operational Downtime Cost Planner formulas →Inputs used by these formula steps
- Lost contributionDowntime Hours
- 10
- Lost contributionContribution Per Operating Hour
- 100
- Lost contributionIdle Labour Cost Per Hour
- 20
- Lost contributionRecovery Cost
- 50
- Lost contributionRecovery Rate
- 0.25
Idle labour cost
Idle labour cost
downtime hours × idle labour cost per hour200.00Result200.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Operational Downtime Cost Planner formulas →Inputs used by these formula steps
- Idle labour costDowntime Hours
- 10
- Idle labour costContribution Per Operating Hour
- 100
- Idle labour costIdle Labour Cost Per Hour
- 20
- Idle labour costRecovery Cost
- 50
- Idle labour costRecovery Rate
- 0.25
Total downtime cost before recovery
Total downtime cost before recovery
lost contribution + idle labour cost + recovery cost1,250.00Result1,250.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Operational Downtime Cost Planner formulas →Inputs used by these formula steps
- Total downtime cost before recoveryDowntime Hours
- 10
- Total downtime cost before recoveryContribution Per Operating Hour
- 100
- Total downtime cost before recoveryIdle Labour Cost Per Hour
- 20
- Total downtime cost before recoveryRecovery Cost
- 50
- Total downtime cost before recoveryRecovery Rate
- 0.25
Recovered contribution
Recovered contribution
lost contribution × recovery rate250.00Result250.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Operational Downtime Cost Planner formulas →Inputs used by these formula steps
- Recovered contributionDowntime Hours
- 10
- Recovered contributionContribution Per Operating Hour
- 100
- Recovered contributionIdle Labour Cost Per Hour
- 20
- Recovered contributionRecovery Cost
- 50
- Recovered contributionRecovery Rate
- 0.25
Net downtime impact
Net downtime impact
gross impact − recovered contribution1,000.00Result1,000.00
Uses the exact shared engine result and only the entered market-neutral operating assumptions. The engine retains raw precision; display formatting does not feed calculation.
Operational Downtime Cost Planner formulas →Inputs used by these formula steps
- Net downtime impactDowntime Hours
- 10
- Net downtime impactContribution Per Operating Hour
- 100
- Net downtime impactIdle Labour Cost Per Hour
- 20
- Net downtime impactRecovery Cost
- 50
- Net downtime impactRecovery Rate
- 0.25
Inputs used
- Downtime hours
- 10
- Contribution per operating hour
- 100
- Idle labour cost per hour
- 20
- Recovery cost
- 50
- Contribution recovery rate
- 0.25
Open this calculator with preset values
This calculator supports documented, shareable scenario URLs. Compatible assistants and applications can construct links using the parameters below.
Scenario links contain only allowlisted numeric and closed-choice inputs shown in the URL; Margin101 excludes free text and identifying fields. Anyone you share the URL with can read those numbers, so do not include private or identifying data.
| Parameter | Meaning | Unit | Allowed values | Presence | Default |
|---|---|---|---|---|---|
| contributionPerOperatingHour | Enter revenue less avoidable operating cost normally earned per hour. Use one consistent ex-tax currency basis. | currency units/operating hour, ex tax | 0 to 10000000 | Required | 100 |
| downtimeHours | Enter the hours the operation was or may be unavailable. | hours/incident | 0 to 100000000 | Required | 10 |
| idleLabourCostPerHour | Enter labour cost that continues during downtime. Use one consistent ex-tax currency basis. | currency units/downtime hour, ex tax | 0 to 10000000 | Required | 20 |
| recoveryCost | Enter repair, restart or recovery expenditure attributable to the incident. Use one consistent ex-tax currency basis. | currency units/downtime incident, ex tax | 0 to 10000000 | Required | 50 |
| recoveryRate | Enter the share of lost contribution expected to be recovered later. | decimal fraction of lost contribution (1 = 100%) | 0 to 1 | Required | 0.25 |
Operational Downtime Cost: lost contribution
Downtime cost combines lost contribution and incremental recovery effects, not total revenue alone.
Formula summary
- Primary formula
- gross impact − recovered contribution.
Data used here
- The estimate uses your inputs and the general business formula documented in the methodology.
Decision checks
Stress-test the decision
Retest longer outages, lower recoverability and higher idle-labour cost.
When this estimate can be misleading
- Volumes, rates, capacity, time, costs and contribution are your records or scenarios; no benchmark or demand forecast is embedded.
- Keep all money and operating records on one consistent ex-tax basis and decision period.
- Incremental comparisons exclude disclosed sunk cost and do not guarantee demand, delivery capacity or a commercial outcome.
- This is educational business decision support, not accounting, tax, legal or financial advice.
- Downtime cost combines lost contribution and incremental recovery effects, not total revenue alone.
Educational estimate, not advice. See all assumptions & limitations →
Related reading
Guides to interpret the decision and its assumptions.
- No-Show and Late-Cancellation Economics
Measure lost appointment contribution, recoverable capacity and policy trade-offs without prescribing a cancellation fee.
Read guide
Frequently asked questions
How do I quantify the contribution, labour and recovery cost of operational downtime?
Prioritise the failure mode with the largest controllable expected cost and recovery time.
Which planning assumptions should I stress-test?
Compare a plausible alternative scenario and verify the decision-critical assumption that changes the plan most.