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Excel Safety Stock Formula

inventory Difficulty:

One-Click Copy

(Max_Daily_Usage * Max_Lead_Time) - (Avg_Daily_Usage * Avg_Lead_Time)

Quick context

• Works in both Excel and Google Sheets.
• Use when you need consistent, auditable results.
• Copy the snippet above and adjust only the ranges.

When to use

Calculates the extra stock needed to mitigate the risk of stockouts due to uncertainties in supply and demand.

Determine how much buffer inventory to keep.

Calculate Safety Stock

Determine how much buffer inventory to keep.

Inputs

Max_Daily_Usage Maximum units sold/used per day.
Max_Lead_Time Maximum time (days) for reorder to arrive.
Avg_Daily_Usage Average units sold/used per day.
Avg_Lead_Time Average time (days) for reorder to arrive.

Practical Example

=(50 * 10) - (40 * 7)

Disclaimer: While we strive for accuracy, these formulas are provided "as is" without warranty of any kind. Please verify all results before use.