#120 · E-commerce Tool

Amazon Reorder Calculator

Find when to reorder Amazon inventory using daily sales, lead time, safety stock, and current inventory.

Your numbers

Amazon Reorder
Ad space

How to use this Amazon Reorder Calculator

Enter your marketplace assumptions and review the result before changing price, discounts, advertising, shipping, or inventory decisions.

Formula

Reorder Point = Average Daily Sales × Lead Time + Safety Stock

Amazon sellers should include inbound delays and safety stock because stockouts can hurt sales rank and paid ad momentum.

This is an independent planning calculator. Verify final marketplace, payment, shipping, and tax details inside your seller dashboard.

What this calculator includes

  • Uses daily sales, supplier lead time, safety stock, current inventory, and inbound units.
  • Shows reorder point, days of cover, days until reorder, and reorder status.
  • Flags reorder now, reorder soon, or healthy stock conditions.

FAQ

What does this calculator estimate?

Find when to reorder Amazon inventory using daily sales, lead time, safety stock, and current inventory.

What formula does it use?

Reorder Point = Average Daily Sales × Lead Time + Safety Stock

Is this an official marketplace fee quote?

No. This calculator uses your inputs for planning. Actual Amazon, Shopify, payment, shipping, and tax rules can vary by market, category, plan, and time.

What should I check next?

Review profit, fees, shipping, conversion, inventory, returns, and repeat purchasing together before changing price or spend.

Inventory status guide

Stock Healthy means current units are safely above reorder point. Reorder Soon means lead time risk is approaching. Overstock Risk can happen when inventory cover is high compared with demand.