Christmas Light Calculator
Tell us what you're decorating — we'll calculate exactly how many lights you need, which type to buy, and roughly what it'll cost. No signup required.
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Estimated total
$140
Christmas tree
$96
7.5-ft tree, standard density
750 warm-white mini lights (8 × 100-bulb strands)
Roofline / eaves
$44
50 ft of roofline, C9 bulbs
50 warm-white C9 bulbs (2 × 25-bulb commercial strands)
Estimates use industry standard density rules and average pricing for warm-white LED lights. Total: 800 bulbs.
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How the math works
Christmas tree: The industry rule of thumb is 100 mini lights per foot of tree height for a standard look. We use 50 for a lightly lit tree and 200 for a heavily lit one. So a 7.5-ft tree at standard density needs ~750 lights.
Roofline (eaves): C9 bulbs are spaced one bulb per foot. For a 50-ft front roofline, you need 50 C9 bulbs. We recommend warm white C9s for most architectural styles — they read cleaner from the street than mini lights at a distance.
Shrubs and bushes: Net lights cover medium shrubs (3–4 ft tall, 4–5 ft wide) cleanly. Each net contains ~150 bulbs. Larger or oddly-shaped shrubs may need two.
Yard trees: For tree wrapping, plan on 100 mini lights per foot of trunk and main branches you wrap (typically 6–8 ft up from the ground for visual impact).
Garland (mantel, banister, doorway):About 50 mini lights per foot of garland. Pre-lit garland already includes lights, so you only need to add lights if you're using fresh or unlit faux greenery.