WooCommerce Square integration that keeps the register and the online shop in step
For shops that take money on a Square register and also sell online through WooCommerce. Square caps a SKU at 80 characters against WooCommerce’s 300, and it has no field for a tracking number, so posted orders keep their courier reference on the WooCommerce side. Both sides tell us the moment something sells, so the other is corrected in under a second.
No credit card · connected in about ten minutes · nothing changes until you say so · Updated 7 August 2026
WooCommerce
SquareWhat a WooCommerce Square integration actually moves
One row per job, based on how QuickSync connects to WooCommerce and Square today. Where a side does not allow something, the cell says so.
| What | WooCommerce | Square |
|---|---|---|
| Stock count | Both ways | Both ways |
| New listings | We can create and update | We can create and update |
| Prices | Sent, with your rule applied | Sent, with your rule applied |
| Orders in | Into QuickSync | Into QuickSync |
| Tracking back | Sent to the order | Square does not accept one |
| Photos and options | Photos, sizes and colours | Photos, sizes and colours |
| How fast we update it | Under a second | Under a second |
| How fast it tells us | The moment it happens | The moment it happens |
Running the register and the other channel by hand
A Square counter sale that never reaches WooCommerce is how you oversell online. Holding a buffer in both places so you cannot is how you sit on stock you could have sold.
| Two shops, run by hand | Two shops, connected |
|---|---|
| The last one sells in both shops within the same hour | Whichever shop sells it, the other one drops to match |
| Typing the same stock numbers into WooCommerce and Square each morning | One count, sent to both, without anyone opening a spreadsheet |
| Changing a price means editing the same product twice | Change it once and each shop gets the price you set for it |
| Orders in two dashboards, matched up by hand at the end of the week | Every order already matched to the right product |
| A refund leaves your numbers wrong until someone notices | A refund puts the stock back and tells both shops |
| Guessing how stale each shop’s number is | A sale on either shop reaches the other in under a second |
One Square order, start to finish
Real timings, second by second.
Square · order #447114:02:11Square41sourceWooCommerce41+0.3sCorrecting WooCommerce takes under a second once we have the sale. The order is in your packing list with the Square order number on it.
The other direction is the same: a sale on WooCommerce reaches Square just as quickly, because WooCommerce pushes it to us the moment it happens too.
Connecting WooCommerce and Square takes about ten minutes
Most of that is us matching your catalogues. The two connections themselves are a login each.
Connect WooCommerce
You install the QuickSync plugin on your WordPress site and paste a key. Nothing on your shop changes until you turn a sync on.
Connect Square
You sign in to Square and approve QuickSync. It covers your catalogue, stock and orders across the locations you pick.
Let it match your products
We line the two catalogues up by SKU, then by title, and hand you a short list of anything we could not match. You decide what happens to those.
Watch, then switch it on
Leave it watching for a few days and check the numbers agree. When you are happy, let it start making changes, one shop at a time.
The limits: know them before you connect
Every WooCommerce Square integration has constraints. These are the ones that apply here.
Quick between WooCommerce and Square
Both WooCommerce and Square tell us the moment something sells, so a sale in one is reflected in the other in under a second. There is no polling gap on this pair.
No tracking number back to Square
Square has no field for us to write a tracking number into, so shipping detail lives in QuickSync and in whichever shop the order came from. Counter sales rarely need it; posted ones are worth knowing about.
Nothing publishes itself to WooCommerce or Square
Copying a listing from WooCommerce to Square (or the other way) always waits for you to look at it. Stock is the only thing that moves on its own, and only once you have turned it on.
One count between the till and the shop
WooCommerce holds the website, Square holds the room. Neither reads the other.
Square keeps its own catalogue for the register and WooCommerce keeps its own for the site, and neither has any idea what the other has sold. Left alone they separate quickly, and the moment you notice is usually the wrong one: someone buys online the last of something that just went through the till.
QuickSync holds one count between them and corrects each side from the other, so neither platform has to be the master. A counter sale lowers the website; a web order lowers what the register will let you sell. Both sides announce their changes to us immediately, so neither is waiting on a scheduled check.
Items pair up by SKU and Square is the tighter of the two at 80 characters against WooCommerce’s 300. That is roomy enough that most catalogues never hit it, but it is worth a glance at your longest SKUs before you connect, because anything over the limit gets truncated on the way to Square and then stops matching.
Square will not take a tracking number back
Fine for counter sales. Worth knowing if you also post from the same stock.
Square has no field for us to write a tracking number into, so when you ship an order that originated at the register, the tracking stays in QuickSync and on the WooCommerce order rather than appearing anywhere in Square. Most counter sales walk out of the shop and never need one, which is why this rarely bites.
It matters if you take orders at the counter for posting later, or if someone on your team works out of Square and expects to read tracking off the sale. WooCommerce orders take a tracking number normally, so the gap is only on the Square side.
Two shops fits the smallest plan
Your catalogue size picks the plan, and your plan price covers two connected shops with every shop after that adding it again. Three shops on Lite is $38 a month.
Lite
$19/mo for two shops1,000 items and up to eight connected integrations, with stock matched on both sides automatically. Enough for WooCommerce and Square on their own, at $19 a month for the two.
Pro
$29/mo for two shops2,500 items and up to eight connected integrations. Listings and orders sync here as well as stock. Most sellers running two shops properly end up here.
Ultra at $69 and Ultra+ at $99 add larger catalogues, price rules and setup help. Every plan starts with a 14-day free trial and no card.
Questions people ask about this pair
How quickly does Square update after something sells on WooCommerce?
Under a second in normal conditions. WooCommerce tells us the moment the sale happens and we write the new count to Square straight away. The reverse is the same when Square sells. If either side is briefly unreachable we hold the update and keep trying rather than dropping it.
How do I sync inventory between WooCommerce and Square?
Neither platform can do it alone, so it takes something sitting between them. QuickSync pairs items up by SKU and keeps a single figure that both sides are corrected against, which means the till and the website stop disagreeing about what is left. Changes are reported by both as they happen, not gathered up on a schedule.
Does QuickSync send tracking numbers to Square?
No. Square has no field for a tracking number, so it stays visible in QuickSync and on the WooCommerce order instead. Counter sales rarely need one; it is worth knowing if you also post orders taken at the register.
Do I have to re-list my WooCommerce products on Square?
No. We match your existing WooCommerce and Square listings by SKU first, then by title, and hand you a short list of whatever we could not match. You can also copy a listing from one side to the other if you want it in both places; that step always waits for you.
Can I charge a different price on Square?
Yes. Set a rule once for Square: a percentage, a fixed uplift, or a price you type yourself. We apply it whenever the price changes, and nothing forces WooCommerce and Square to the same number.
Does the tracking number go back to both shops?
Not to Square. Square has no way for us to send a tracking number back, so the shipping detail stays in QuickSync and in whichever shop the order came from.
What happens if a buyer cancels or I refund them on WooCommerce or Square?
The stock goes back. A cancellation or a refund puts the item back into your count and we send the corrected number to both WooCommerce and Square.
Which plan do I need for WooCommerce and Square?
Lite covers WooCommerce and Square. Lite is $19 a month for two shops and holds 1,000 items, with up to eight connected integrations. You would move up a plan for catalogue size, and your bill goes up by another $19 if you connect a third shop.
Guides for running WooCommerce and Square together
Setup walkthroughs, edge cases and comparisons that go deeper than this page — each one is a sub-question, not another page chasing the same head term.
Selling somewhere else as well?
Each combination has its own page, including the limits that apply to that pair, not a generic WooCommerce write-up with the logo swapped.
Or read about one shop on its own
Every channel has a page covering exactly what syncs, what does not, and how fast.
Connect WooCommerce and Square and watch one correct the other
Make one test sale and watch the other shop’s count drop. If it doesn’t work the way this page describes, you’ve spent ten minutes and no money.
No credit card required
Setup guides for this pair
Connect each shop with its own walkthrough, then come back to this page for how WooCommerce and Square stay in step.