Shipping Cost Calculator
Real cost of shipping an order.
Calculate total shipping cost per order including carrier fees, packaging, and handling. Compare to price charged to customers.
What this tool does
This calculator models the total cost to fulfil a shipped order by combining carrier charges, packaging, and handling expenses. It takes your average package weight, the shipping rate per kilogram, packaging materials cost, and labour or processing costs, then calculates the sum of all these elements. The result shows what it actually costs to get an order to the customer, separate from what the customer paid for shipping. By comparing total cost against the price charged, you can see whether shipping revenue covers expenses or runs at a loss on a per-order basis. The calculation assumes a standard carrier model based on weight; it does not account for dimensional pricing, regional surcharges, insurance, or variable labour rates. This illustration helps visualise how packaging, handling, and carrier rates combine to shape order economics.
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Shipping cost per order is carrier fees plus packaging plus handling labour. Most ecommerce stores under-account for the full cost because they only Reviewing the carrier invoice. The 4 Royal Mail quote becomes 6-8 once the box, tape, dunnage, label printer, and 2 minutes of pick-and-pack labour are added.
A 2kg package at 3/kg carrier rate = 6 shipping. Add 1.50 packaging and 0.80 handling = 8.30 total cost. If you charge customers 5.99 shipping, you're losing 2.31 per order on shipping alone. At 500 orders/month that's 1,155 of margin disappearing unnoticed.
Free shipping doesn't actually make this go away; it just rolls the cost into product margin. Stores offering free shipping typically raise product prices 10-15% to cover it, which tests show increases conversion more than it loses - customers hate adding 5.99 at checkout but barely notice 5 spread across a basket.
Run it with sensible defaults
Using avg package weight of 2, shipping rate per kg of 3, packaging cost of 1.5, handling cost of 0.8, the calculation works out to 8.30. The defaults are meant as a starting point, not a recommendation.
The levers in this calculation
The inputs — Avg Package Weight (kg), Shipping Rate per kg, Packaging Cost, Handling Cost, and Price Charged to Customer — do not pull with equal force.
How the math works
Total cost = weight × rate + packaging + handling. Margin = price charged - total cost.
What the score tells you
Headline financial numbers — income, savings, debt — each tell part of the story. This calculation stitches several together into a single read you can track over time. The value is in the direction, not the absolute number.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
2kg × ££3 + ££1.5 + ££0.8 = 8.30.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes total shipping cost by multiplying the average package weight in kilograms by the per-kilogram shipping rate, then adding fixed packaging and handling costs. The model treats the shipping rate as constant regardless of weight band or destination, and assumes packaging and handling costs remain static per order. It does not account for volume discounts, dimensional weight pricing, carrier surcharges, seasonal rate fluctuations, or variable costs that may change based on destination zone or service level. The profit margin is derived by subtracting the total cost from the price charged to the customer, showing the contribution available to cover other operational expenses.
References
Frequently Asked Questions
Do carriers charge by weight or volume?
Is it cheaper to charge shipping or offer free?
What's a good shipping margin?
to use a 3PL?
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