Lux, Lumens and Wattage guides
Converting lumens, watts, lux and foot-candles, and working out how much light a space needs.
Products: LED Street Lights →
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Foot-Candles to Lux: Conversion, Lumens and Recommended Light Levels
How to convert foot-candles to lux and back, how they relate to lumens, how to measure them with a light meter, and recommended foot-candle and lux levels for offices, warehouses, streets and sports.
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Lumens to Watts: Conversion Chart for LED, Incandescent, Fluorescent and HID
How to convert lumens to watts and back: what 800, 1,000 and 1,600 lumens equal for LED and incandescent, efficacy by lamp type, and how many lumens you need for rooms and outdoor areas.
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200W LED High Bay: How Much Area One Light Covers
How many square metres one 200 W LED high bay lights at 150, 200 and 300 lux, the right mounting height and spacing, a 40 × 25 m warehouse worked example, and what 200 W replaces.
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LED Flood Light Wattage Guide: 50 W to 1000 W, and What Each Replaces
Which LED flood light wattage for yards, car parks, facades, sports courts and high masts; metal halide and halogen equivalents; beam angle and mounting height; and a 400 W metal halide retrofit worked through in our savings calculator.
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How Many Watts Does an LED Street Light Need? 50 W, 100 W, 150 W or 200 W
How to choose LED street light wattage from road width, pole height and lighting class, with worked examples for 6, 7, 10 and 14 m roads, a quick wattage table, and why lumens matter more than watts.
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How Many Rainy Days Can a Solar Street Light Last? Autonomy Explained
What 'days of autonomy' really means for a solar street light, why datasheet figures are often optimistic, how to check a light against your rainy season, and what to change when the battery is too small.
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HPS to LED Conversion: LED vs Sodium Street Lights, Wattage Chart and Payback
What LED wattage replaces a 70, 150, 250 or 400 W high-pressure sodium lamp? A conversion chart for street and area lighting, why ballast losses matter, how much energy you save, and how to calculate payback.
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How Many LED High Bay Lights Do I Need? A Warehouse Lighting Layout Guide
Work out how many LED high bay lights a warehouse, factory or sports hall needs: recommended lux levels, the lumen method step by step, spacing rules by beam angle, and a worked example for a 60 × 30 m warehouse.