Planning tool
Landscape Lighting Transformer Planner
Group the yard into real zones, total the fixture load, estimate wire distance, and get to a more realistic transformer size before you buy.
Build the plan first, then review the sizing result
Start with the zones, add the fixtures, then review the recommendation below.
Zone 1
Add the main run distance and the fixtures that belong in this zone.
This run looks fairly manageable for a typical residential zone, but still confirm wire gauge against the final layout.
Planner Result
Recommended transformer range
Once the zones are filled out, use this section to review the totals, pressure-test your reserve capacity, and save a clean PDF summary.
Connected load
38 W
Planned load
43.7 W
Recommended minimum
52.4 W
Suggested transformer
75 W
That keeps the planned load around 58.3% of the selected transformer before any future additions.
Front Walk
This run looks fairly manageable for a typical residential zone, but still confirm wire gauge against the final layout.
How to use it
Use the planner after you sketch the zones, not before.
Start by dividing the yard into practical zones such as the front walk, the entry, one tree group, or a side-yard path. Add the fixture types, use the actual wattage when you have it, and estimate the run distance honestly instead of optimistically.
The planner is not meant to replace the rest of the decision-making. It is meant to keep you from buying a transformer based on rough fixture counts alone. Once the zone totals are clearer, use the voltage-drop and wire-gauge tools to pressure-test the longer runs.
If the project is growing quickly or the longest run looks borderline, that is a sign to slow down and review the wiring plan before treating the transformer answer as final.
Next steps
Layout ideas guide
Go back to the planning guide if the real problem is still how the yard should break into zones before you total the load.
Transformer sizing guide
Read the guide if you want the reasoning behind headroom, zoning, and reserve capacity.
Wire gauge calculator
Check cable size next when the load answer looks workable but the longer runs may still need heavier wire.