Inventory Reorder Planner

What this Inventory Reorder Planner does

Calculate safe reorder points and buffer stock based on supplier lead times and daily sales. The tool is part of FBA Master's free Amazon seller resource collection, covering amazon wholesale sourcing and inventory planning. It is intended to help you organize the inputs and understand the result before taking action in Seller Central, with a supplier, or in your business records.

Related search topics include inventory reorder planner, inventory reorder planner online, free inventory reorder planner, Amazon seller inventory reorder planner. Choose the inputs that match your own marketplace and business situation rather than relying on default examples.

How to use the Inventory Reorder Planner

Enter average daily sales and lead time.
Get your exact reorder point trigger in units.

Before using the result, check that every amount, percentage, unit and date matches the source information you intend to analyze.

Inputs used by this tool

The calculator displays the following fields. Your exact inputs depend on the selected tool and its available options.

Average Units Sold/Day
Supplier + Prep Lead Time (Days)
Safety Stock Buffer (Days)

Calculation method and formula

The tool's registered calculation explanation is:

Reorder Point = (Daily Sales Velocity * Lead Time Days) + Safety Stock Buffer.

The result depends on the values you enter and the assumptions built into the tool. Where marketplace fees, carrier prices or tax rules apply, confirm the latest official figures before relying on the estimate.

Practical tips before you use the result

Use current figures from your Seller Central reports, supplier quotation, invoice or other primary records.
Keep the units consistent. Do not mix inches with centimetres, kilograms with pounds, or one currency with another.
Test more than one realistic scenario when comparing prices, costs or campaign settings.
Save or record the result you need before closing or refreshing the page.
Extend your lead time buffer by an extra 14 days ahead of Chinese New Year when manufacturing facilities and port terminals shut down annually.
Audit Amazon's historical check-in latency for your assigned fulfillment centers and incorporate receiving delays into total supplier lead time.

Use supplier quotations and current marketplace data for your inputs. Recheck minimum order quantities, prep costs, freight and payment terms before placing an order.

Worked example: Inventory Reorder Planner

Sample inputs:

Average Units Sold/Day: 18
Supplier + Prep Lead Time (Days): 21 days
Safety Stock Buffer (Days): 10 days

Calculation:

Reorder Point = 558 units
Lead Time Units = 378
Safety Stock = 180

Result: Reorder Point: 558 units, Lead Time Units: 378, Safety Stock: 180

Executing the tool logic with these inputs yields Reorder Point: 558 units, confirming operational profitability and compliance.

Tool disclaimer

This Inventory Reorder Planner is provided for educational and planning purposes. Results depend on the information you enter and the assumptions shown by the tool. Amazon fees, marketplace rules, tax rates, shipping charges and regulatory requirements change. Verify current figures with Amazon Seller Central, the relevant tax authority, carrier or qualified professional before making financial, tax, legal or compliance decisions. FBA Master does not guarantee accuracy for every business situation or any commercial outcome.

Frequently asked questions

What is safety stock buffer?

Extra days of inventory reserved to prevent stockouts if the distributor delays shipment or Amazon FC check-in stalls.

How do I use the Inventory Reorder Planner?

Open the calculator on this page, enter the values requested by its fields, and review the calculated result. Calculate safe reorder points and buffer stock based on supplier lead times and daily sales.

Does the Inventory Reorder Planner send my entries to a server?

The calculator logic runs in your browser using the values you enter. Do not enter confidential information into a shared or public device, and save any results you need before closing or refreshing the page.

What does the Inventory Reorder Planner calculate?

Calculate safe reorder points and buffer stock based on supplier lead times and daily sales. The tool uses the calculation logic described in its formula section and displays the result from your inputs.

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