String Lights Calculator

Calculate how many string light strands you need for any space — patio, pergola, backyard, event tent, or wedding venue. Includes power requirements and circuit safety check.

Space dimensions
Hanging pattern
|||
Parallel lines
Strands run same direction
###
Criss-cross grid
Both directions, dense look
[ ]
Perimeter only
Border around the space
///
Diagonal
45-degree angle lines
*
Starburst / radial
From centre point outward
^^
Full canopy
Dense overhead coverage
String light specifications
Distance between parallel strands

Please enter space dimensions.

Strands needed
0 strands
0
Total feet of lights
0
Total bulbs
0W
Total wattage
0
Circuits needed
Layout diagram
Power and circuit information
Space dimensions
Hanging pattern
Total wire length needed
Strands required
Total bulbs
Total wattage
Max strands per circuit (15A)
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The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.