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F.lux For Windows

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About F.lux

F.lux is a lightweight application that intelligently adjusts the color temperature of your screen based on the ambient light in your surroundings. By adapting the screen's color to the time of day and the type of light, F.lux aims to reduce eye strain and improve your sleep quality.

Key Features

1.Adaptive Screen Color Adjustment
F.lux dynamically modifies the color temperature of your screen based on the amount of light in your environment and the time of day. During the day, it reduces the amount of blue light emitted by your screen, creating warmer tones that mimic natural light. In the evening, F.lux automatically adjusts the screen to emit warmer colors, helping to reduce eye strain and promoting healthier sleep patterns.

2.Customizable Light Types
To achieve greater accuracy in adjusting screen colors, F.lux allows you to select the type of light in your room. You can choose from various options such as halogen, fluorescent, or natural light. By specifying the type of light, F.lux can fine-tune the color temperature to match your specific environment, resulting in a more precise and comfortable viewing experience.

3.Location-Based Configuration
To accurately determine the time zone and geographical location, F.lux provides a "Set Your Location" function. By entering your coordinates, which can be obtained through the application's built-in feature, F.lux uses this information to align its color temperature settings with the local sunrise and sunset times. This location-based configuration ensures that your screen adapts to the natural lighting conditions of your specific region.

4.Custom Transition Speed
F.lux allows you to choose the transition speed between different color tones on your screen. You can opt for a fast transition, which takes around 20 seconds, or a slower transition, lasting approximately 60 seconds. This customization option lets you find the right balance between a smoother color shift and a faster adjustment based on your personal preference and sensitivity to screen changes.

F.lux is an innovative application that brings a thoughtful approach to screen color adaptation. With its adaptive screen color adjustment, customizable light types, location-based configuration, and adjustable transition speed, F.lux provides a comfortable and personalized viewing experience. By reducing blue light exposure and aligning your screen's colors with the natural lighting of your environment, F.lux aims to support healthier vision and sleep patterns.

Reviewed by Eddie C. Reardon


Updated onMar 8, 2024

Old Versions

Mar 8, 2024
exe32 bit
Feb 2, 2024
exe32 bit
All Versions
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F.lux for PC
Set your screen color to adjust to the time of day
Free Downloadfor Windows

How to download and Install F.lux on Windows PC

  • Click on the Download button to start downloading F.lux for Windows.
  • Open the .exe installation file in the Downloads folder and double click it.
  • Follow the instructions in the pop-up window to install F.lux on Windows PC.
  • Now you can open and run F.lux on Windows PC.