Order Fulfillment Cost Calculator (Cost per Order)

Find out what it really costs to fulfill one order. Enter your own figures, no account needed.

By Tibeau De Grauwe, FounderUpdated September 2026

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Fulfillment cost per order tells you how much it costs to pick, pack and ship one order. It is the number to compare against your shipping charges, your margins and any 3PL quote.

Enter your costs for one period: warehouse labor, packaging materials, other overhead (rent share, software, utilities) and postage you pay, then the number of orders shipped in the same period. The calculator shows the total cost per order and the cost without postage, so you can separate your own operation from carrier charges.

Be honest about labor. Include the time of owners and part-time helpers at a realistic hourly rate; leaving it out is the most common reason a business believes its fulfillment is cheaper than it is.

Order Fulfillment Cost Calculator

orders

Fulfillment cost per order

3.63

Excluding postage: 2.38 per order

How the calculation works

Cost per order = (labor + packaging + overhead + postage) ÷ orders. Excluding postage: (labor + packaging + overhead) ÷ orders.

Example: 12,000 labor + 3,000 packaging + 4,000 overhead + 10,000 postage = 29,000, divided by 8,000 orders is 3.63 per order, or 2.38 without postage.

The figure is an average. Orders with many lines or heavy items cost more to pick and ship than a single-item order, so consider splitting the calculation by order type.

See also: Landed cost calculator, Picking productivity calculator, Ecommerce warehouse management.

Embed this calculator on your site

Copy this code into your page. The calculator runs in the visitor's browser and includes a link back to StockFlow.

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Frequently asked questions

How do you calculate fulfillment cost per order?
Add labor, packaging, overhead and postage for a period and divide by the number of orders shipped in that period.
Should postage be included?
Include it to see the full cost of an order, and exclude it to see the cost of your own operation. The calculator shows both.
What costs are easy to forget?
Owner and part-time labor, returns handling, storage share of rent, software subscriptions and payment or marketplace fees if you count them as part of fulfillment.
Does this calculator store my data?
No. The calculation runs entirely in your browser; nothing is sent to or stored on a server.

Topic guide

Inventory Management Software

Part of our complete guide. Start with inventory management software.

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