Unlike a golf case or a bike box, a desktop computer's own size doesn't fight the parcel limit.
The size problem other items on this site run into — a computer mostly avoids it
USPS's country page for Canada, read on pe.usps.com 2026-08-21, sets Priority Mail International's limits at a maximum weight of 66 lb, a maximum length of 79 inches, and a maximum combined length and girth of 108 inches (the shorter 59-inch length cap belongs to Priority Mail Express International). A boxed desktop tower, packed to roughly 26 by 22 by 14 inches at 30 to 45 lb, comes nowhere near any of those three numbers.
| Measurement | Desktop tower box | USPS limit to Canada | Where it lands |
|---|---|---|---|
| Length | 26 in | 79 in | Clear |
| Length plus girth 26 + 2×(22+14) | 98 in | 108 in | Clear |
| Weight | 30 lb | 66 lb | Clear |
That is the opposite result from a golf travel case or a full-size bike box on this site, both of which sit right at or over a parcel carrier's international line. A tower's box is compact enough, relative to its weight, that the retail international products USPS, UPS and FedEx already sell will generally take it without any special routing.
No lithium battery to declare
A laptop crossing a border carries its own complication: an installed lithium-ion battery, regulated as UN3481, with its own carrier mark and a declaration on the air waybill. A desktop tower runs on wall power. It has no lithium battery pack of its own, so that entire layer of paperwork simply does not apply to it — one real reason a tower is the more straightforward of the two to send abroad, even though it is the bulkier box. SMKlog's online international labels cover Canada, the UK, Germany and Australia; other destinations are not sold here.
What still applies
Ordinary customs and export rules for electronics still apply to a tower the same as any other commodity — a commercial invoice, an accurate description, and an honest declared value. None of that is battery-specific.
What doesn't
The lithium battery mark, the IATA Section II watt-hour and quantity limits, and the carrier's dangerous-goods surcharge that a laptop or a spare battery pack can trigger. A tower skips all three.
Where the peripherals fit in
A wireless mouse or keyboard shipped in the same box usually runs on a small button or AA/AAA cell, which is a different, much lighter-touch category than a device's own installed lithium-ion pack — but confirm with the carrier before packing anything with its own battery alongside the tower.
What FedEx wants on the box once it crosses a border
FedEx's own customs documentation page, read on fedex.com 2026-08-18, states that “the Commercial Invoice is required for all international commodity shipments” and is the document customs agencies use for import control, valuation and duty. Its international how-to page adds that a description has to answer five questions consistently across every document: what it is, how many there are, what it is made from, its intended use, and its country of manufacture.
No exact HS code from FedEx directly
FedEx's page does not hand you the tariff number to write down; it points to its own International Shipping Assist tool to work one out from the item description, which is the route worth using rather than guessing.
A used machine's value is its used value
Declare the fair resale price of the tower, not the price it sold for new. FedEx's guidance on export licensing separately points exporters to the Commerce Control List to check whether a specific configuration needs one, which is rare for an ordinary consumer PC.
Consistency beats precision
The same description, in the same words, on the commercial invoice, the label and any other paperwork is what FedEx's own page emphasizes — a mismatch between documents is a more common hold-up than an imperfect but consistent one.
The domestic booking, priced live
Headed to Canada, the UK, Germany or Australia, the tower prices in one booking at our checkout, declaration and all. Anywhere else, an international computer shipment commonly moves in two bookings rather than one: an ordinary domestic parcel to a US address, followed by a separate international booking from there, whether that is USPS Priority Mail International bought directly at usps.com, a carrier's own international account, or a freight forwarder. That first leg is one our checkout has always sold, so we quoted it: an HP Pavilion desktop tower, Berkeley Heights, NJ to a Miami, FL ZIP — a city with a heavy concentration of forwarders — captured live on 2026-08-18.
What we typed
HP Pavilion desktop computer tower without monitor
Packed box
26 × 22 × 14 in
66 × 56 × 36 cm
30 lb packed (13.6 kg).
Route
Berkeley Heights, NJ 07922
to Miami, FL 33101
Both ZIPs live at request time. This is the domestic leg only, not a border crossing.
| Carrier | Service | Price | Estimated transit |
|---|---|---|---|
| UPS | Ground | $59.51 | 5-6 business days |
| FedEx | Ground Economy | $70.70 | 5-6 business days |
| UPS | Ground Saver | $82.53 | about 5 business days |
| FedEx | Ground | $85.99 | 5-6 business days |
| UPS | 3 Day Select | $107.93 | 5-6 business days |
This is not an international price and does not get the tower across a border by itself — it is the longest domestic lane SMKlog can quote, shown so the two-booking model has a real number attached rather than a guess. Because this box clears USPS's own international limits, though, the simpler path for many shippers is skipping the forwarder entirely and buying Priority Mail International, or a UPS or FedEx international service, directly.
Where these rules come from
- USPS, Country Conditions for Mailing — Canada — Priority Mail International weight and size limits. Read 2026-08-18.
- FedEx, Customs documents — the Commercial Invoice requirement. Read 2026-08-18.
- FedEx, How to Ship Internationally — the five-question description standard and prohibited-items guidance. Read 2026-08-18.
Every carrier publishes its own limits by destination country and revises them without notice. Treat the figures above as what USPS and FedEx published for the date shown, and check the specific destination country before booking.
Common questions
Can you ship a computer internationally?
Yes. A boxed desktop tower fits comfortably inside USPS Priority Mail International's size and weight limits, and FedEx and UPS both move computers across borders on their international package services every day. SMKlog's online international labels cover Canada, the UK, Germany and Australia; other destinations are not sold here.
Does a desktop computer need a lithium battery declaration to ship internationally?
No. That requirement belongs to laptops, whose battery is installed and regulated as UN3481. A desktop tower runs on wall power and carries no lithium battery pack of its own, so the battery paperwork that complicates an international laptop shipment does not apply to it.
What size computer clears USPS's international limit?
A typical desktop tower, boxed to about 26 x 22 x 14 in, comes to 98 inches of combined length and girth and roughly 30 to 45 lb. USPS Priority Mail International to Canada allows up to 108 inches of combined length and girth and 66 lb, read on pe.usps.com 2026-08-18, so the tower clears with room to spare.
What does FedEx need on the customs form for a computer?
A Commercial Invoice, which FedEx's own page calls the document required for all international commodity shipments. It asks for what the item is, how many there are, what it is made from, its intended use, and its country of manufacture, read on fedex.com 2026-08-18.
What can SMKlog actually price for an international computer shipment?
A tower bound for Canada, the UK, Germany or Australia prices end to end at checkout, live carrier rates with the customs form completed before payment. SMKlog's online international labels cover Canada, the UK, Germany and Australia; other destinations are not sold here.