Shipping Cost Calculator: What Free Shipping Costs

On a $38 order at a 45% margin, free shipping takes 58.5% of the profit — and that is with the cheapest label a US seller can buy. Buy the same label at a Post Office counter instead and it takes 84.8%. Most sellers know shipping costs them something. Very few have worked out that it is most of the order.

Where these numbers come from

The postage figures are USPS’s own published 2026 prices, effective 12 July 2026, taken from the price files on usps.com. They are not estimates and they are not from a comparison site. Everything the calculator does with them is arithmetic, labeled as such.

What I am not claiming. I ship from Bangladesh, not the United States, so none of these are my invoices — they are the published prices, and you can download the same files. The first-hand figures on this page are at the end, and they are about something different: what the label costs versus what shipping costs.

One decision sets the price, and it is not the carrier

For anything jewelry-sized, the question is not which carrier. It is whether you pay the retail price or the commercial price. Same service, same truck, same delivery window, two price lists.

USPS Ground Advantage	Retail, at the counter	Commercial, bought online	Difference
4 oz, Zone 1	$7.90	$6.93	$0.97
12 oz, Zone 1	$9.55	$6.93	$2.62
12 oz, Zone 8	$12.90	$8.40	$4.50
1 lb, Zone 8	$12.90	$10.67	$2.23

That flatness is the whole game for a jewelry seller. Anything under a pound ships for one price, so the box, the padding, the card and the ribbon are free weight. On the retail list the same parcel jumps 21% between eight and twelve ounces, and 36% in Zone 8.

At 60 parcels a month that one choice — buying the label online rather than at the counter — is $270 a month, $3,240 a year, on exactly the same service. Put $12.90 into the calculator instead of $8.40 and watch what happens to the last three rows.

The number almost nobody works out

Shipping is not a cost against the order. It is a cost against the profit on the order, and those are very different sizes. Run the defaults — a $38 order, a 45% gross margin, an $8.40 label, $1.60 of packaging, free shipping to the buyer:

Order value	$38.00
Gross profit at 45%	$17.10
Label and packaging	− $10.00
What the order really leaves you	$7.10
True margin after shipping	18.7%, not 45%
Share of the profit shipping took	58.5%

Three outputs follow from that, and they are the reason this page exists rather than being another postage lookup.

1. The order value where free shipping stops working. At these numbers it is $22.22. Below that, the order costs you money to fulfil, however good the margin looks on paper. If you sell anything under that price with free shipping, you are paying people to take it.
2. What absorbing it costs a year. $10 an order at 60 orders a month is $600 a month and $7,200 a year. That is not a line in most sellers’ heads, because it never appears as a bill — it appears as a slightly smaller number on every payout.
3. The price rise that would actually hold your margin, and it is not $10. Raising the price raises the cost of goods you are measuring against, so to keep 45% while absorbing $10 you have to add $18.18, taking a $38 piece to $56.18. The formula is the absorbed cost divided by (1 − margin), and getting it wrong is how “I built shipping into my prices” quietly becomes a smaller margin than before.

Check the third one if you like: at $56.18 the goods still cost $20.90, shipping still costs $10, and $25.28 is left — which is 45.0% of $56.18.

Free shipping, charged shipping, and the honest middle

Change one field — what you charge the buyer — and the whole picture moves. Same $38 order, same costs:

You charge the buyer	$0 (free shipping)	$5.95	$8.40 (the label)
You absorb	$10.00	$4.05	$1.60
Order leaves you	$7.10	$13.05	$15.50
True margin	18.7%	34.3%	40.8%
Share of profit gone	58.5%	23.7%	9.4%
Cost to you, a year	$7,200	$2,916	$1,152

That last point is the one worth sitting with. A seller who charges the exact label price believes they have passed shipping on in full, and they have not. The box, the tissue, the card and the tape are still theirs, every single order.

Those are Bangladeshi prices and they are not benchmarks for a US seller — my courier charges a fraction of USPS. What transfers is the shape: the label is the number you can look up, and it is not the number that matters. Put your real packaging cost into the field above, not zero.

What this calculator does not include

Said plainly, because a calculator that hides its omissions is worse than no calculator.

• Marketplace fees. On Etsy the transaction fee is charged on the shipping you collect as well as the item, so charging for shipping costs a little more than it looks. The Etsy fee calculator handles that side.
• Returns. A separate and larger cost than most sellers think, with its own arithmetic: the return cost calculator works out what the parcels that come back take from the orders that arrive.
• Your time packing. Deliberately out, because an hourly rate makes the number arguable. Add it to the packaging field if you want it in.
• Insurance above what the service includes, signature confirmation, and Saturday delivery.
• What free shipping wins you in extra orders. This is real, it is the honest counterweight to the whole page, and I have no first-hand number for it so I will not invent one. What the calculator gives you is the cost side, measured properly, so the trade is made with one real figure rather than two guesses.

Three things to do with this

1. Buy labels online, today, if you are not already. It is the same service for less money and it is the single largest saving on this page — $4.50 a parcel at the far end of the country, $3,240 a year at 60 parcels a month. Nothing else here is that easy.
2. Weigh one finished parcel, with the box and the padding. Not the piece — the parcel. Commercial pricing is flat under a pound, so most jewelry sellers are nowhere near a price break and can stop worrying about packaging weight entirely. Knowing that for certain is worth the two minutes.
3. Find your free-shipping floor and hold it. The calculator gives you the order value below which a free-shipping order loses money. If some of your listings sit under it, that is the list to reprice — not the whole shop.

Two companion pieces: what free shipping actually costs when you absorb it, worked on a real order from my own shop, and what a handmade margin looks like once every cost is in it. All the free calculators sit on one page, and every first-hand figure this site publishes is on the data page, free to quote.

Sources: USPS published 2026 price files for Ground Advantage, prices effective 12 July 2026, read from usps.com; service inclusions from the Ground Advantage service page. Packaging and courier costs are measured in my own shop and converted at 123.07 taka to the US dollar, read 9 October 2026. Every other figure on this page is arithmetic on those two, and is labeled where it appears.

Questions people ask about this

What is the cheapest way to ship a small parcel in the US?

For anything jewelry-sized, USPS Ground Advantage bought at the commercial price. Under a pound it is one flat price within a zone — $6.93 locally and $8.40 coast to coast on the 2026 list — and it includes tracking and $100 of insurance. The same parcel bought over a Post Office counter is $12.90.

How do I get the commercial price without a business account?

Any platform that sells USPS labels passes it on, including Etsy’s own label purchase and free standalone services. The commercial rate is not a volume discount you have to qualify for — it is simply the price of a label bought online instead of at a counter. If you are printing labels at the Post Office, you are paying retail for no reason.

Should I offer free shipping or charge for it?

This page cannot answer that, and any page claiming to is guessing at half the equation. Free shipping genuinely lifts conversion; I have no measurement of by how much and will not invent one. What the calculator gives you is the cost side: if free shipping is taking 58.5% of your profit on an order, you are deciding whether it wins you more than 58.5% more orders. That is a real question with one real number in it.

I raised my prices to cover shipping. Is that enough?

Probably not, if you added the shipping cost straight onto the price. Raising the price also raises the figure your margin is measured against, so the amount that actually holds your margin is the absorbed cost divided by (1 − your margin). Absorbing $10 at a 45% margin needs $18.18, not $10. The calculator’s last row does this for you.

Does charging the exact postage make shipping free for me?

No, and this is the quiet one. Postage is not packaging. Charge the buyer the full $8.40 label and you are still buying the box, the padding, the card and the tape on every order — $1.60 in the default here, which is $1,152 a year at 60 parcels a month. Put your real packaging cost in the field and look at the yearly row.

Why is the heaviest parcel sometimes the same price as the lightest?

Because commercial Ground Advantage is flat under one pound. Four ounces and fifteen ounces cost the same. For a jewelry seller that means the gift box and the ribbon are free weight, which is the opposite of the instinct most sellers have about packaging.