86 Calculator

Calculate the Cost of an “86’d” Item

Determine the true financial impact when you have to 86 an item from your menu. This 86 calculator helps you quantify lost revenue, lost profit, and waste-related costs.

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Cost Breakdown

Metric	Description	Calculated Value

This table provides a detailed breakdown of the financial impact from the “86” event.

What is an “86”?

In the restaurant and bar industry, “86” is a universal shorthand term meaning an item is no longer available. When a chef or manager declares an item is “86’d,” it signals to all staff—from the front-of-house servers to the back-of-house line cooks—to stop selling it immediately. This can happen for several reasons, such as selling out of a popular dish faster than anticipated, a supplier failing to deliver key ingredients, or spoilage making ingredients unusable. Effectively managing and tracking these instances is crucial, and a specialized 86 calculator is an essential tool for understanding the true financial consequences. While the term simply means “it’s gone,” the ripple effects on revenue, profit, and customer satisfaction can be significant.

This 86 calculator should be used by restaurant owners, kitchen managers, bar managers, and chefs who are responsible for inventory, menu planning, and financial performance. If you are tracking profit and loss, understanding the cost of stockouts is not just an academic exercise—it’s a critical data point for improving purchasing, prep pars, and sales forecasting. Common misconceptions are that an 86 only represents lost revenue. In reality, it includes lost profit, potential costs from wasted prepped ingredients, and the intangible cost of a disappointed customer who may not return.

86 Calculator Formula and Mathematical Explanation

Calculating the true cost of an 86 event involves more than just the missed sale. The formula provides a comprehensive view of the financial damage by combining lost opportunity cost (profit) with tangible losses (waste). Our 86 calculator uses the following core logic:

Step 1: Calculate Profit Per Unit. This is the foundational profit you make on each item sold.
Formula: Profit Per Unit = Sale Price per Item – Cost per Item

Step 2: Calculate Total Lost Potential Profit. This measures the total profit you missed out on because you couldn’t sell the item.
Formula: Lost Potential Profit = Profit Per Unit × Potential Units Sold

Step 3: Calculate the Total Cost of the 86 Event. This is the primary output of the 86 calculator, combining the lost profit with the cost of any ingredients that had to be thrown away.
Formula: Total Cost of “86” = Lost Potential Profit + Cost of Wasted Ingredients

Variable	Meaning	Unit	Typical Range
Cost per Item	The direct cost to produce one menu item.	Dollars ($)	$1 – $15
Sale Price per Item	The menu price paid by the customer.	Dollars ($)	$5 – $50
Potential Units Sold	The forecasted or historical sales number for the item during the stockout period.	Units	5 – 100+
Cost of Wasted Ingredients	Value of prepped ingredients that spoiled or were discarded.	Dollars ($)	$0 – $200+

Practical Examples (Real-World Use Cases)

Example 1: The Sold-Out Steak Special

A steakhouse offers a Friday night special “12oz Ribeye” that is extremely popular. They prep enough for 40 portions. By 8 PM, they’ve sold out completely but continue to get orders for it.

• Inputs:
  • Cost per Item: $8.50
  • Sale Price per Item: $29.99
  • Potential Units Sold (after stockout): 15
  • Cost of Wasted Ingredients: $0 (all steaks were sold)
• Calculator Output:
  • Profit per Unit: $21.49
  • Lost Potential Profit: $322.35
  • Total Cost of “86”: $322.35

Interpretation: By under-prepping for the demand, the steakhouse missed out on over $300 in pure profit. This data strongly suggests increasing the prep level for this item on future Fridays. Analyzing this with a menu engineering strategy is the next logical step.

Example 2: The Spoiled Guacamole

A Mexican restaurant has to 86 its “Fresh Guacamole” appetizer because the delivery of avocados was poor quality and they had to be thrown out after being prepped.

• Inputs:
  • Cost per Item: $1.20
  • Sale Price per Item: $9.00
  • Potential Units Sold: 30
  • Cost of Wasted Ingredients: $25.00 (The cost of the bad avocados plus cilantro and onions that were prepped with them)
• Calculator Output:
  • Profit per Unit: $7.80
  • Lost Potential Profit: $234.00
  • Total Cost of “86”: $259.00

Interpretation: The total damage was $259. This loss was driven primarily by lost potential profit, but the wasted ingredient cost added a significant extra sting. This highlights the importance of supplier quality control. Using an 86 calculator helps quantify the financial argument for potentially switching to a more reliable, albeit slightly more expensive, produce vendor.

How to Use This 86 Calculator

Using this tool is straightforward. Follow these steps to accurately assess the financial impact of a stockout.

1. Enter Cost per Item: Input the total cost of the ingredients and direct labor to make a single serving of the item.
2. Enter Sale Price per Item: Input the price you charge customers on the menu.
3. Enter Potential Units Sold: This is the most critical estimate. Use historical sales data from your POS for similar service periods to estimate how many more units you realistically would have sold.
4. Enter Cost of Wasted Ingredients: Quantify the cost of any food that was prepped but had to be thrown away as a direct result of the 86’d item (e.g., a sauce that can only be used for that dish).
5. Review the Results: The 86 calculator instantly updates the Total Cost, Lost Revenue, and Lost Profit. Use these figures to inform your decisions.
6. Analyze the Chart and Table: The visual breakdown helps you see if the loss came more from lost opportunity (profit) or direct waste, guiding whether you should adjust purchasing or prep levels. For deeper analysis, consider using a food cost calculator to refine your item costs.

Key Factors That Affect 86 Calculator Results

The output of an 86 calculator is highly sensitive to several operational factors. Understanding them is key to reducing losses.

• Sales Forecasting Accuracy: The “Potential Units Sold” is the biggest lever in the calculation. Inaccurate forecasting leads to either consistent under-prepping (high 86 costs) or over-prepping (high kitchen waste costs).
• Inventory Management: A lack of real-time inventory tracking is a primary cause of unexpected stockouts. Implementing a par level system or using inventory management software can drastically reduce the frequency of 86 events.
• Supplier Reliability: Late deliveries or poor-quality ingredients from vendors can force an item to be 86’d, as seen in the guacamole example. This directly impacts both waste and lost sales.
• Menu Engineering: Items with high popularity and high profit margins (Stars) are the most damaging to 86. The cost of running out of a Star item is far greater than running out of a low-margin item (Plowhorse). A robust 86 calculator provides crucial data for your menu engineering matrix.
• Staff Training and Communication: How quickly is an impending 86 communicated? Slow communication can lead to servers taking orders for items that are no longer available, leading to customer dissatisfaction on top of the financial loss.
• Recipe Costing Accuracy: The “Cost per Item” input must be precise. If your recipe costing is outdated and ingredient prices have risen, your calculated lost profit will be artificially high, skewing the results of the 86 calculator. Regularly update your recipes to reflect current invoice prices.

Frequently Asked Questions (FAQ)

1. How can I accurately estimate “Potential Units Sold”?

The best method is to consult your POS system’s historical data. Look at sales for the same item on the same day of the week over the past 4-6 weeks. Average those numbers to get a reliable baseline. If it’s a new item, use sales data from a comparable item on your menu.

2. What’s the difference between lost revenue and lost profit?

Lost Revenue is the total top-line sales amount you missed out on (Sale Price x Units). Lost Profit is the bottom-line amount you missed (Profit per Unit x Units). Profit is the more important metric for decision-making, which is why it’s a focus of this 86 calculator.

3. Should I include labor costs in the “Cost per Item”?

For the most accurate result, yes. You should include the cost of direct labor involved in prepping that specific item. However, many restaurants omit this for simplicity and focus only on ingredient cost (Cost of Goods Sold). If you focus only on ingredients, be consistent across all your calculations.

4. How often should I use an 86 calculator?

You should log every single 86 event and calculate its cost. Keep a running tally (e.g., in a weekly log). This turns “we ran out of the fish” into “we lost $1,200 in profit this month from 86’ing the fish special.” This data is vital for weekly manager meetings and making smarter purchasing decisions. It’s a key part of your restaurant profit margin analysis.

5. Can this calculator account for the cost of a disappointed customer?

No, the calculator quantifies the direct financial loss. The “soft cost” of a lost customer is real but impossible to calculate precisely. However, you can use the frequency and total cost of 86 events as a proxy for customer friction. A high monthly 86 cost suggests you are likely disappointing customers regularly.

6. Is it always bad to 86 an item?

Not necessarily. For very expensive, low-turnover items, it can be a strategic decision to prep very few and risk an 86 to avoid the much higher cost of spoilage. The goal isn’t to have zero 86s, but to eliminate *unplanned* 86s on your core, profitable menu items. A good cost of goods sold strategy involves balancing these risks.

7. What if an 86’d item has no wasted ingredients?

That’s a common scenario, especially when you simply sell out of a product. In that case, you just enter “$0” into the “Cost of Wasted Ingredients” field in the 86 calculator. The total cost will then equal your total lost potential profit.

8. Why did the restaurant industry start using the term “86”?

The exact origin is debated, but one popular theory traces it back to a speakeasy at 86 Bedford Street in New York City during Prohibition. When police were about to raid, the bartender would shout “86!” to tell customers to flee out the back. The term stuck as a general code for getting rid of something or someone.