Indoor Plant Light Calculator
Determine your indoor light level based on window direction and distance, with suitable plant recommendations.
Light Level & Plant Suggestions
Indoor light levels vary dramatically based on window direction and distance from the window.
Light by window direction (Northern Hemisphere):
| Direction | Light Level | Best For |
|---|---|---|
| South-facing | Brightest (direct sun) | Sun-loving plants, succulents |
| West-facing | Bright (afternoon sun) | Most houseplants |
| East-facing | Moderate (morning sun) | Tropical plants, ferns |
| North-facing | Low (indirect only) | Low-light tolerant plants |
Light levels by distance from window:
- 0–3 ft: Bright/direct light
- 3–6 ft: Bright indirect light
- 6–10 ft: Medium indirect light
- 10+ ft: Low light
Foot-candle measurements:
- Direct sunlight: 5,000–10,000+ fc
- Bright indirect: 500–2,000 fc
- Medium light: 200–500 fc
- Low light: 50–200 fc
Tip: Obstructions (buildings, trees, overhangs) can reduce light by 50% or more. Sheer curtains reduce by ~25%.