Independent planning guide

Sign Letter Size Calculator

Estimate a practical capital-letter height from viewing distance and whether the viewer is stationary or moving.

Free browser-based toolEntries stay in your browserPlanning estimate only

Enter your assumptions

Change the fields to reflect the project you are considering.

Planning result

Estimated result

Planning range
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How this calculator works

The recommendation uses a comfortable-reading rule and increases size for moving viewers. Typeface, contrast, message length, angle, lighting and clutter still require a site check.

Do not order from this estimate. Confirm dimensions, materials, permits, electrical requirements, access and written prices with qualified local suppliers.

Improve your budget

  • Measure the available sign area and viewing distance
  • Photograph the surface and installation access
  • Check landlord and local approval requirements
  • Separate fabrication, installation and electrical costs
  • Keep contingency until the site survey is complete

Next planning step

Read how to compare sign quotations and the approvals guide before requesting prices.