Skip to Content

LED Strip Driver & Cable Calculator

Calculate driver wattage, current and safety margin for LED strip installations.


Saleh Deco Lighting Tool

LED Strip Driver & Cable Calculator

Calculate LED-strip load, driver capacity, current and a preliminary low-voltage copper-cable recommendation for 12V, 24V or 48V installations.

Example: 14.4W/m
Metres across all connected runs
Equal-load runs connected to the driver
Advanced calculation and cable options
Percentage added above the strip load

Cable recommendation

Enter the one-way distance from the driver or distribution point to the LED strip. The tool sizes copper conductors primarily by voltage drop.

One-way metres: driver to distribution point
One-way metres: distribution point to strip
Both-end feed divides branch current approximately in half
Copper conductors only. Results use a 20°C copper-resistivity approximation and standard metric conductor sizes. Final installation must also account for temperature, cable grouping, insulation, terminals and local rules.

How to Use the LED Strip Driver & Cable Calculator

Use the strip specifications and cable distances to estimate driver capacity and preliminary conductor sizes.

1Select the strip voltage

The driver output voltage must match the LED strip voltage.

2Enter watts per metre and total length

The tool multiplies W/m by total strip length to calculate load.

3Enter the cable distances

Use one-way distances. The calculation automatically includes outgoing and return conductors.

4Review main and branch cables

The main feed carries the full load. Equal branches carry the total load divided by the number of runs.

How cable sizing works

Voltage drop is estimated using conductor length, current, copper resistance and cross-sectional area. The result rounds up to a standard metric size.

What still requires project verification?
  • Maximum strip length per feed point
  • Cable installation method and temperature
  • Controller and terminal current limits
  • Local electrical requirements


What does the LED Strip Driver & Cable Calculator do?

LED strip driver sizing helps determine the power supply wattage needed for a low-voltage LED strip installation. The calculator uses the strip voltage, wattage per metre, total strip length, and number of runs to estimate the total connected load, output current, and recommended driver size.

The cable section provides a preliminary copper cable recommendation based on load, voltage, distance, and allowable voltage drop. This helps users estimate whether the selected cable size is likely suitable for the installation.

How accurate is the calculator?

The Saleh Deco LED Strip Driver & Cable Calculator provides a preliminary planning estimate. It calculates the total strip load, recommended driver wattage, output current, and a basic cable recommendation using standard low-voltage DC voltage-drop logic.

Actual results can vary according to strip construction, maximum run length, power injection points, controller limits, cable routing, ambient temperature, installation method, terminal ratings, and the technical requirements of the selected products.

Need help choosing a fitting?

Browse our LED strip lighting, drivers, and lighting profile solutions, or contact Saleh Deco with your strip length, voltage, installation layout, and application for a more detailed recommendation.

Browse LED Strip Lighting ​Contact Saleh Deco