Calculators by job
Barcode and GS1
Barcode check digit calculator
Paste the digits without the check digit and get it, or paste the full number and find out whether it is right before you print a thousand of them.
Barcode X-dimension and quiet zone calculator
The narrowest bar has to land on whole printer dots. This shows the width you asked for, the width you will get, and whether that still scans.
Printer and resolution
DPI, millimetre and dot calculator
A thermal printer cannot place half a dot. This shows the exact dot count for a measurement, the value it will round to, and how far that moves the edge.
Label size calculator
Give it the label you are holding and it returns every number a printer setup screen asks for, including the pitch that drives media detection.
Media and consumables
Labels per roll calculator
How many labels are actually on that roll, worked out from its geometry rather than from the number printed on the box.
Thermal ribbon usage calculator
Thermal transfer ribbon advances with the label whether the label is full of ink or nearly blank, so consumption follows label length, not coverage.
Do this on real labels
Free
No signup
Runs in your browser
The calculators answer one number at a time. LabelInn applies the same maths across a whole design, a whole spreadsheet and a whole print run — and sends it to the printer without a driver.
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