Use this calculator to estimate the amount of Christmas lighting needed for tree wrapping projects. Calculate footage and strand counts for tree trunks, branches, or both.
Enter your measurements below and the calculator will automatically estimate total footage, strand quantities, and overall material requirements. The strand length defaults to 24 feet, which is standard for many professional Christmas light installers, but can be adjusted to match your specific products.
Enter trunk measurements, branch measurements, or both to estimate footage and strand count.
For average branch circumference, measure a branch somewhere in the middle of the group you are decorating.
Understanding electrical loads is critical when designing and installing Christmas lighting displays. Use these calculators to quickly determine wattage requirements or amperage draw based on your project specifications.
The calculators below use the standard electrical formulas:
Watts = Amps × Volts
Amps = Watts ÷ Volts
These calculations can help you verify circuit capacity, estimate power consumption, and ensure your holiday lighting displays remain within safe operating limits. Standard residential power in the United States is typically 120 volts, which is preloaded into the calculators below for convenience.
Use these quick electrical calculators to estimate wattage or amperage for Christmas lighting and décor projects.
Enter amps and volts to calculate watts.
Enter watts and volts to calculate amps.