How much light does my room need?
Estimate downlight requirements for residential-style spaces
Use this home lighting calculator to estimate the lux level, total lumen requirement and a sensible starting quantity of downlights for residential-style interiors. It is designed for spaces such as kitchens, living rooms, bedrooms, hallways, bathrooms and dining areas where downlights are often the most common fitting type.
Rather than guessing how many recessed lights you need, this tool gives a clearer early-stage estimate based on room type and floor area. That makes it easier to sense-check whether you need softer ambient lighting, more practical task lighting or a more layered scheme using adjustable or low-glare downlights.
Built around real room types
Different domestic spaces need different lighting levels. A kitchen usually needs more light than a bedroom, while hallways and lounges often suit a softer ambient approach.
Focused on downlight-led schemes
This version is designed around recessed downlights and residential-style fittings rather than industrial or commercial bulkheads, so the output feels more relevant straight away.
Useful before detailed design
It is a practical first step for fit-outs, refurbishments and early product shortlisting before moving into final spacing, beam angle and glare-control decisions.
Calculate the right light level for common home-style interiors
Choose the room type, enter the floor area and this tool will estimate the target lux level, required lumens and a sensible starting quantity of downlights for residential-style spaces.
A more relevant starting point for residential-style downlight layouts
This version is tighter, simpler and more appropriate for home-style interiors where recessed downlights tend to be the default fitting. It is best used for early-stage lumen checks and quantity guidance before final spacing and beam angle decisions.
