Voltage Drop Calculator for LED Strips

Calculate voltage loss and wire gauge needs for your under-cabinet LED projects.

What you get

• Start Here sheet with input instructions
• Main calculation table with dropdown lists for materials and gauges
• Settings sheet for unit preferences (meters/feet)
• Summary sheet with voltage totals and recommended wire gauge
• Bar chart: Length by Wire Gauge (updates as you type)

Why you will like it

• Automatic calculation of voltage drop based on distance, wire gauge, and current load.
• Input fields for wire material (copper/aluminum), length, and LED strip specifications.
• Visual summary showing remaining voltage at the far end of your run.
• Recommended wire gauge suggestions to keep brightness loss under 3%.

Made for

DIY enthusiasts planning electrical installations

How it works

1. Enter your LED strip length, current draw, and available wire size in the input cells.
2. The formulas will automatically calculate voltage loss and remaining voltage at the end.
3. Review the Summary sheet to see if your brightness will be affected by the drop.
4. Adjust the wire gauge dropdown to find a size that keeps voltage loss low.

Format: Excel file (.xlsx). Works in Microsoft Excel, Google Sheets and LibreOffice. Instant download after purchase.

Designed by ABDALLAT & CO Enterprises with AI-assisted tools and checked before release. Questions or problems? Email [email protected].