Watt and lumen

Watt indicates the amount of power a bulb uses to provide light, while lumen is the unit used to measure the light output of a light bulb. This guide shows how LED and energy-saving light bulbs require less power to emit the same amount of light as a classic bulb and what to look for on Philips packaging.

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Base type

Learn about the differences between base types and how to pick the right one for your light fixture.

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Amount of Light

See how lumen indicates the amount of light that a bulb produces.

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Wide and focused light

See how the shape of a bulb has a big impact on the light effect it delivers.

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Color Temperature

See how color temperature determines if a bulb produces warm or cool light.

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Color Rendering Index

See how a high color rendering index makes colors appear natural.