Pick the right printing cylinder in seconds
Type in your label size and the RK Label Calculator shows you the cylinders that can print it, with the gap between labels sorted out for you. Free to download.

What it is
The RK Label Calculator is a small Windows program for people who print labels on flexo presses. You tell it the label length you want, and it gives you the cylinders that can print it, with the gap between labels already worked out. Work that used to mean a call to the workshop, or a test print you end up throwing away, now takes a few seconds at your own desk. We built it at RK Label Printing Machinery and give it to our customers for free.
Who it is for
Built for the people on the floor and at the desk who plan and run label jobs.
Printers choosing a cylinder before a run.
Estimators who need repeat lengths quickly.
Operators checking a size before they set up the press.
Anyone buying a press from us who wants to plan work before it arrives.
What you can do with it
Everything you need to size a job — nothing you don't.
Start from a label length
Enter the length and your gap, and see every cylinder that matches.
Start from a cylinder
Enter a tooth count, and see the label sizes it prints well.
Set your own gap range
Set your own smallest and largest gap between labels.
Search the results
Search a long list of results to find the option you want.
Keep a record
Keep a record of what you worked out during a session.
Use it offline
Use it offline once it is installed.
How it works
Three steps, and you have a shortlist ready for the press.
Enter your label length, or a cylinder tooth count, and the gap you want between labels.
The tool checks it against the cylinder sizes we work with.
You get a list of options that are ready to run on the press.
Download it
The calculator is free for everyone. Enter a few details, then download it and install it on your Windows computer. No fee, and nothing to renew.
Get the free download
All fields are required so we can send you the tool.
We only use your details to send you the tool and occasional updates. Nothing from the calculator itself is uploaded.
Frequently Asked Questions
You give it a label length, or a cylinder tooth count, and it shows you the printing cylinders that fit your job, with the gap between labels already worked out. It saves you a test print and a call to the workshop.
Yes, for everyone. There is no licence fee and nothing to subscribe to. Enter a few details on the page and download it.
No. It runs on your own Windows computer. Once it is installed you can use it offline.
No. Your inputs and your history stay on your computer. Nothing is uploaded.
The cylinder sizes we work with day to day.
Size your next job in seconds
Download the RK Label Calculator free and keep it on your desk.