58mm vs 80mm thermal printer: which should your shop buy?
The two standard receipt widths look similar on a catalogue page but behave differently at a busy counter. Here is how to choose without overbuying.
What the numbers actually mean
Thermal receipt printers are sold by paper width. A 58 mm roll is about 58 millimetres wide, and an 80 mm roll is about 80 millimetres wide. The printable area is smaller than the paper: roughly 48 mm on a 58 mm printer and 72 mm on an 80 mm one, though this varies by model. The wider paper simply fits more characters on each line.
Thermal printers use heat-sensitive paper, so there is no ink or ribbon to buy. Running cost is the paper roll, which is why paper width and roll length affect your monthly spend.
58 mm: compact and cheap
- Smaller, lighter and usually the cheapest to buy.
- Cheaper rolls, and they take less space on a crowded counter.
- Fits roughly 30 to 32 characters per line, so long item names wrap or get shortened.
- A good fit for small shops with short item names and simple receipts.
80 mm: more room, easier to read
- Roughly 42 to 48 characters per line, so item names, quantity, rate and amount sit on one line.
- Easier to read for customers, and better for receipts with GST details.
- Usually has a faster print speed and often supports auto-cutter and cash-drawer ports.
- Slightly higher price for the printer and the rolls.
A simple way to choose
If you are unsure, 80 mm is the safer default for a shop that bills all day. Always check that the model has a Windows driver, because the billing app prints through Windows.
| Your situation | Better fit |
|---|---|
| Short item names, few items per bill, tight counter space | 58 mm |
| Long product names, GST detail on the receipt, busy counter | 80 mm |
| You want a cash drawer connected to the printer | 80 mm (check the model) |
| Lowest upfront cost matters most | 58 mm |
Other things to check before buying
- Connection: USB is the simplest. Network or Wi-Fi models suit shops where the printer is away from the PC.
- Auto-cutter: saves tearing the paper by hand at every bill.
- Cash drawer port: needed if you want the drawer to open on each sale.
- Driver support for Windows 10 and 11.
- Availability of rolls in your town, so you are not stuck waiting for paper.
Using your printer with RathTech Billing POS
RathTech Billing POS prints to USB or Windows-installed thermal printers, network and Wi-Fi thermal printers, and any regular system printer. Auto-cut and cash-drawer opening work where the printer supports them. If the printer is off or out of paper, the sale is still saved and you can reprint the receipt from Sales History. Details are in receipt printing.
Since printer hardware varies, install your printer, then run a test bill during the free 14-day trial before you buy extra units. For full tax invoices, the app prints a separate A4 GST invoice. See the GST invoice format guide.
Keeping receipts legible
Thermal paper fades with heat, light and age. If a customer may need a receipt for warranty or returns months later, mention that thermal prints can fade, and keep your own record. In the app, every bill stays in Sales History, so you can reprint a clean copy at any time. Back up regularly with the one-click backup so those records are safe. Read about offline billing and where your data lives.
Frequently asked questions
Is 80 mm better than 58 mm?
80 mm fits more text per line and suits GST detail and long names. 58 mm is cheaper and more compact. Choose by your counter and receipt content.
Do thermal printers need ink?
No. They print on heat-sensitive paper, so you only buy rolls.
Will a cash drawer open automatically?
On supported printers with a drawer port, yes. Check the printer model and test it in the trial.