Enter the values used by stockout loss
Estimate contribution at risk when products are unavailable, using missed units per day and profit contribution per unit. Enter the assumptions for the same time period and currency, and check any minimum or maximum values displayed next to the input fields.
Expected stockout duration, Estimated missed unit sales per day, Contribution per missed unit.
Change one variable so you can see the effect without mixing several assumptions.
The worked example below shows the formula and the independently rendered default-input results.
Calculate stockout loss from sample inputs
These are the same starting values loaded into the interactive calculator above. The displayed results below come from the same calculation engine as the live tool.
Step 1 — Record the inputs
Step 2 — Identify the formula
Step 3 — Substitute the values
For this exact worked case, use Expected stockout duration = 5 days; Estimated missed unit sales per day = 20 units/day; Contribution per missed unit = $14. Replace named formula variables with their input values as shown below. Keep the units consistent; a percent is divided by 100 wherever the model requires a decimal rate.
Step 4 — Read the calculated answer
Rounding follows the calculator display: whole units may be rounded up when an indivisible unit is required, while other values typically show up to two decimal places. The result is conditional on the entered assumptions, not a market quotation.
How to interpret this stockout loss result
This is contribution at risk, not automatically realized loss. Substitutions, delayed orders and customer retention can reduce actual losses.
Connect the number to a replenishment, capacity, or working-capital decision. Verify whether the data represent actual demand or a forecast.
Scenario comparison
Compare average demand with a peak-demand period and extend the lead time to see where the plan becomes fragile.
Assumptions and limitations
Lead-time variation, supplier constraints and demand spikes can make a simple average misleading.
- Expected stockout duration: Enter a finite numeric value of at least 0. Use a consistent definition across comparison cases.
- Estimated missed unit sales per day: Enter a finite numeric value of at least 0. Use a consistent definition across comparison cases.
- Contribution per missed unit: Enter a finite monetary value of at least 0. Use a consistent definition across comparison cases.
Frequently asked questions
What does this calculator include?
It uses the named inputs above and the formula shown in the worked example. No other fees, revenue streams, or external data are automatically included.
Why could my real result be different?
Lead-time variation, supplier constraints and demand spikes can make a simple average misleading.
How should I compare two results?
Compare average demand with a peak-demand period and extend the lead time to see where the plan becomes fragile. Record the assumption that changed so a higher or lower answer is interpretable.
Stockout Loss calculation method
This is contribution at risk, not automatically realized loss. Substitutions, delayed orders and customer retention can reduce actual losses.
Apply this calculator to a business decision
Compare the formula with a worked scenario and check the assumptions in the supporting guide.
What this estimate does—and does not—include
This tool is designed for quick planning and comparison. For tax, accounting, legal, investment, lending, or other regulated decisions, verify the result against the rules and assumptions that apply to your situation.
CalcScoutHQ shows the calculation logic so you can check assumptions, understand the result, and reproduce the math independently when needed.