Shipping Cost per Garment Calculator: The Short Answer
A brand ships 5,000 hoodies in 100 cartons of 60 × 40 × 40 centimetres, with 12 kilograms in each. The forwarder quotes a placeholder rate of £100 per cubic metre by sea and £4 per kilogram by air, plus £300 of fixed charges. The shipping cost per garment calculator turns those inputs into a cost per piece: £0.25 by sea and £1.34 by air. Air costs about five times as much per garment with these assumptions, and the whole difference comes from how the carrier measures the cartons.
The rates here are placeholders chosen to show the arithmetic, not market prices. Your own quote will differ, and the point of the calculator is that you can type it in and see the answer in seconds.
Use the Shipping Cost per Garment Calculator
Enter the number of pieces in the shipment, the pieces per carton and the outside size and gross weight of a carton. Then add the sea rate per cubic metre and the air rate per kilogram from your quotes, and any fixed charges. The calculator rounds the cartons up, works out the volume and the chargeable weight, and shows the total and the cost per piece for both modes. Add a selling price if you want freight as a share of what the customer pays.
Shipping cost per garment calculator
Sea and air cost per piece
The rates and fixed charges are your own inputs; the defaults are placeholders, not market rates. Duty, VAT and other landed costs are not included.
Run the shipping cost per garment calculator with the quotes you have actually received, then change one thing at a time. Raise the pieces per carton, trim the carton height or move to a larger shipment, and watch which input moves the cost per piece most. The answer is usually the carton.
It also helps to run the shipping cost per garment calculator for more than one scenario before you commit. Try your expected quantity, then a smaller trial order and a larger repeat order, and compare the cost per piece. If the small order costs far more per piece, you know the fixed charges are the cause, and you can decide whether to combine styles or wait for a larger run.
How the Calculation Works
The method is the same for any garment. First count the cartons by dividing the pieces by the pieces per carton and rounding up. For sea freight, multiply the carton volume in cubic metres by the number of cartons, compare it with the weight in tonnes, take the greater and multiply by the rate. For air freight, work out the actual weight and the volumetric weight, take the greater and multiply by the rate per kilogram. Finally add the fixed charges and divide the total by the number of pieces.
From quote to cost per garment
- 1Count cartonsPieces ÷ pieces per carton, rounded up.
- 2Measure the shipmentTotal CBM and total gross weight.
- 3Find the chargeable basisGreater of CBM and tonnes by sea; greater of actual and volumetric kg by air.
- 4Apply the rateChargeable basis × your quoted rate.
- 5Add fixed chargesDocuments, handling and any other fixed items.
- 6Divide by piecesShipment total ÷ pieces = cost per garment.
Our volumetric weight calculator explains the air step in more detail, and the CBM calculator for clothing cartons does the same for sea volume.
Why Pieces per Carton Moves the Cost per Piece
For a fixed rate, the freight cost per garment depends mainly on how much space each garment takes. A carton holds more pieces when garments are folded and packed tightly, and each extra piece shares the same carton cost. The table holds the carton at 60 × 40 × 40 centimetres, with the placeholder rates from the example, and varies only the pieces per carton.
Freight cost per piece by pieces per carton, before fixed charges
| Pieces per carton | Sea at £100 per CBM | Air at £4 per kg |
|---|---|---|
| 25 | £0.38 | £2.56 |
| 50 | £0.19 | £1.28 |
| 75 | £0.13 | £0.85 |
| 100 | £0.10 | £0.64 |
Arithmetic: sea = 0.096 CBM × £100 ÷ pieces; air = 16 kg chargeable × £4 ÷ pieces. Placeholder rates, not market prices.
Doubling the pieces per carton halves the freight cost per piece, whichever mode you use. It is the most direct lever you have, and it costs nothing in freight terms to ask for it. The catch is that the packing must still protect the garments.
How Quantity Spreads Fixed Charges
Fixed charges such as documentation and handling do not grow with the shipment, so they weigh heavily on small orders and almost vanish on large ones. The second table spreads the £300 of fixed charges in the example across four shipment sizes.
Fixed charges per piece by shipment size
| Pieces in the shipment | Fixed charge per piece (£300 total) |
|---|---|
| 500 | £0.60 |
| 1,000 | £0.30 |
| 5,000 | £0.06 |
| 10,000 | £0.03 |
Arithmetic: £300 ÷ pieces. The £300 is a placeholder for illustration.
A first order of 500 pieces carries £0.60 of fixed charges on each garment before any freight is counted, while a 10,000-piece order carries £0.03. That is one reason repeat orders cost less to ship per piece, and why combining styles into one shipment can help. See our landed cost calculator to place the freight among the other costs.
Sea and Air Side by Side
The bar chart compares the two modes at three packing densities, with fixed charges left out so that only the freight rate is visible. Bars are in pence per piece to keep the scale readable.
Freight cost per piece in pence, sea against air, by pieces per carton
Pence per piece
Arithmetic from the placeholder rates in the example: 0.096 CBM per carton at £100 per CBM and 16 kg chargeable at £4 per kg. Fixed charges excluded.
At every packing density air costs several times as much as sea, which is why most garment programmes use sea for bulk and keep air for emergencies. The right choice still depends on the delay cost of stock arriving late, which our guide to sea freight versus air freight for clothing covers.
Where the Money Goes on a Sea Shipment
In the example, the sea shipment totals £1,260: £960 of freight and £300 of fixed charges. The pie shows the split, which makes clear how much of a small shipment is overhead rather than freight.
Split of the £1,260 sea shipment in the example
- Freight charge (£960)76.2%
- Fixed charges (£300)23.8%
Arithmetic: 9.6 CBM × £100 = £960 plus £300 fixed. Placeholder rates for illustration.
Nearly a quarter of this shipment is fixed charges. On a larger shipment the same £300 would be a sliver. Ask your forwarder for every fixed item on the quote, and which of them apply at each end, because trade terms decide who pays what. The ICC Incoterms rules rules set out the usual divisions.
What to Check on a Freight Quote
A quote is easy to compare when it lists the same items every time. Before you type a number into the calculator, check that the quote states what it covers.
Items to confirm on a freight quote
- The trade term, so you know what is included at each end
- The chargeable basis: CBM, tonnes or volumetric kilograms
- The divisor used for air freight and any rounding rules
- Every fixed charge, by name, and which side pays it
- Insurance, whether it is included and what it covers
- The validity date of the rate, since rates change
A general checklist. Your forwarder confirms what applies to your shipment.
Our guide to landed cost for clothing imports into the UK shows where freight sits among duty, VAT and handling, and the forwarders' international federation FIATA explains the role of the forwarder.
From Freight per Piece to Your Price
Once the shipping cost per garment calculator gives you a figure, carry it into your landed cost and your margin. A cost of £0.25 on a £25 wholesale price is one per cent; £1.34 is more than five per cent. The share matters for pricing decisions, and the calculator shows it if you add a selling price. Test the effect on margin with our clothing profit margin calculator.
Treat the output of the shipping cost per garment calculator as a range, not a point, because rates, exchange rates and fuel charges move. Run the calculator with a high and a low quote to see how sensitive your price is, and keep both results beside the quote so that the assumption behind your landed cost is recorded and can be revisited when rates change.
How Ruhrose Helps You Keep Shipping Predictable
Ruhrose develops hoodies, fleece, jersey, denim and woven casualwear for UK buyers, with production in Bangladesh. We can agree carton size and pieces per carton during development, so the data you need for a shipping quote is known early and does not change at packing. Ruhrose's clothing manufacturing pages describe what we make.
Before you accept a freight quote, ask yourself one question: do you know what it adds to each garment, in pence?