Label Size Planner

Ever printed a full sheet of labels only to find the last row cut
off, or the margins so tight the edges jam your printer? Label Size
Planner exists to end that guesswork entirely.

This is a focused, no-nonsense layout calculator for anyone who
prints labels regularly — small business owners packaging products,
teachers labeling supplies, home organizers, crafters, or anyone
prepping a print job that actually needs to line up. Pick your
paper size — A4, US Letter, Legal, or enter fully custom dimensions
— then enter your label size and desired shape (rectangle, rounded
rectangle, circle, or oval). From there, the app does the math for
you: it calculates the maximum number of labels that will fit, the
ideal margins to keep everything centered, and the exact spacing
needed between labels so nothing overlaps.

Prefer to set your own grid instead? Switch to Manual Override Mode,
lock in the exact rows and columns you want, and the app will
recalculate the margins and spacing required to make that grid fit
perfectly on your chosen page.

Every calculation is shown visually — a live, to-scale preview of
your label sheet updates as you type, so you can see your layout
before you ever touch a printer.

What's included:
- Paper size presets (A4, Letter, Legal) plus fully custom sizing
- Rectangle, rounded rectangle, circle, and oval label shapes
- Live unit conversion between millimeters, centimeters, and inches
- Auto-Fit calculator for maximum labels per sheet
- Manual Override mode for locking your own row/column grid
- To-scale visual preview with margin and spacing callouts
- Save and reuse your favorite layouts anytime
- A built-in formula reference so you always know exactly how the
numbers were calculated
- Clear warnings for oversized labels, invalid margins, or layouts
that won't fit

No clutter, no unnecessary steps — just open the app, enter your
numbers, and get a layout you can trust before you hit print.