Channel Letter Calculator

Size channel letter signage and estimate LED module count, power draw, and fabrication cost.

Number of Letters

Letter Height (in)

Return Depth (in)

Illumination Type

Tab to move between fields

Total Sign Width

10.9 ft

≈ 22 smartphones

Est. Fabrication Cost

$2,640.00

≈ 20 pairs of sneakers

LED Modules48

Power Draw34.6 W

How to Use This Calculator

Enter number of letters and letter height (in).
Set LED modules per letter and power (W) per module, then enter fabrication cost ($) per letter.
Review total sign width (ft), LED module count, power (W), fabrication cost, and installation cost.
Check circuit amperage -- ensure the sign's power requirements match the available electrical service.

How the result changes with Number of Letters

Number of Letters: Total number of channel letters in the sign
Letter Height (in): Average letter height in inches (standard storefront: 18-36 in)
Return Depth (in): Side depth of the channel letter (typically 3-5 inches)
Illumination Type: 1 = Front-lit (face illuminated), 2 = Reverse/halo-lit, 3 = Front + halo combo

Identify Input Parameters
4 parameters
Number of Letters = 8, Letter Height (in) = 24, Return Depth (in) = 5, Illumination Type = 1 = 4 input(s) provided
Calculate Total Sign Width
Total Sign Width
10.9 = 10.9
Calculate LED Modules
LED Modules
48 = 48
Calculate Power Draw
Power Draw
34.6 = 34.6