Is 4000 lumens bright enough?

Whether 4000 lumens is bright enough for lighting depends on the space. To calculate your lighting needs, first determine the square footage of the room. Then, use a trusted online resource to learn the recommended foot-candles for the type of space. Then, multiply these two numbers together to find out the ideal number of lumens for adequate lighting. As an example, the recommended foot-candles for a dining room are 30 to 40. If your dining room was 100 square feet in size, you'd need lighting fixtures with an output of 3000 to 4000 lumens. Shop a diverse assortment of lighting on 1stDibs.