Free Inventory Tool

Free Safety Stock Calculator

Calculate the exact buffer inventory you need to protect against supplier delays and sudden demand spikes without tying up cash in dead stock.

Your Variables

Maximum Daily Sales (Units)

The most units you've ever sold in a single day.

Maximum Lead Time (Days)

The longest it has ever taken a supplier to deliver an order.

Average Daily Sales (Units)

Your normal, everyday sales volume.

Average Lead Time (Days)

Your normal, expected supplier delivery time.

Your Safety Stock

160

Units

How this is calculated:

Safety Stock = (Max Daily Sales × Max Lead Time) - (Avg Daily Sales × Avg Lead Time)

Max Lead Time Demand: 300 units (Absolute worst-case scenario demand)
Average Lead Time Demand: 140 units (Normal, expected demand)

Tired of calculating this manually?

Slapsoil automatically tracks your stock levels and calculates moving averages so you always know when to order. It runs completely offline, and it's 100% free.

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