Letter Spacing Calculator — Optimal Calligraphy Spacing

There is no single number — spacing is judged optically, not mathematically. The aim is even white space: the area between each pair of letters should look equal even though the measured gaps differ by letter shape (Edward Johnston; Sheila Waters). This tool uses a fraction of x-height (default 15%) as an indicative starting gap, then scales it by the hand so you have a figure to set your guide sheet against — it is not a substitute for the eye.

The traditional broad-pen rule is that word spacing equals the width of a lowercase o of the script you are writing — many calligraphers "ghost" an o between words to gauge it (Crossroads Calligraphy). This tool therefore sets word spacing equal to the average character (o) width for the selected hand. Too wide and the text looks scattered; too narrow and words run together.

Yes. Gothic/Blackletter is the densest broad-pen hand — letters sit roughly one nib width apart and almost touch — while Italic is the most open, with Foundational and Uncial in between. This calculator reflects that: at the same x-height and style, Gothic returns a tighter letter gap than Italic. Copperplate is a pointed-pen script, so its broad-pen figures here are indicative only (see below).

Copperplate (and Spencerian) are pointed-pen scripts written with a flexible nib that has no fixed width. Their spacing is governed by the slant guide and the entry/exit strokes of each letter, not by broad-pen counter geometry. The nib-width and x-height ratios this tool uses do not strictly apply, so treat any Copperplate figures as a loose starting point rather than a rule.

Focus on the white space between letters rather than the distance between strokes. Two straight-sided letters (HH) need the most space, round-to-round (OO) the least, and mixed pairs fall in between (Sheila Waters). Practise with the word "minimum" — its repeated verticals make uneven spacing obvious.

Traditional calligraphy uses about 1.5x the word spacing after a full stop, which is why this tool reports a separate sentence-spacing figure. Modern lettering often keeps a single word space; the wider gap mainly helps readability in formal, dense texts.