FBA Restock Calculator
Work out how many units to send into Amazon FBA.
Sending too little to FBA risks a stockout and lost Prime sales; too much racks up storage fees. This calculator sizes a shipment to cover your lead time plus a coverage buffer, net of what's already there.
Results update when you click Calculate or change a value.
Send = max(0, daily sales x (lead time + coverage days) - current FBA stock)
How it works
The target stock position is everything you'll sell while the shipment is in transit plus the coverage window you want on hand once it lands. Subtract what's already at Amazon and you get how much to send now.
Tune the coverage target to your cash and storage constraints -- longer coverage means fewer shipments but more capital and fees parked at Amazon. Skuwell tracks FBA stock alongside the rest of your inventory and feeds restock and sell-through signals into the same forecasting that drives your other channels.
Skuwell does this math for every SKU, automatically.
Reorder points, safety stock, turnover, and GMROI — computed live and turned into purchase orders. See it on a 30-minute walkthrough.
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