Why calibrate?

Every monitor leaves the factory with different color temperature, gamma, and white point. Uncalibrated, screen colors likely differ from what the content creator intended. For casual use this is fine. For photo editing, graphic design, video color grading, or print preparation, calibration is essential.

Step 1: Set the right physical settings first

Before any software calibration:

Brightness: Set to match your ambient environment. 120 cd/m² is standard for indoor office. 80 cd/m² for dark room. Use your monitor's OSD, not software brightness.

Contrast: Start at the monitor default (usually 50–75). Do not adjust during calibration unless instructed.

Color temperature preset: Set to your target - usually "6500K" or "sRGB" for general use, "5000K" (D50) for print-matching work.

Warm up: Let the monitor run for 30 minutes before calibrating. Display output changes as components warm up.

Step 2: Set gamma

Target gamma 2.2 for general SDR content (the standard for PC and most web content). The Gamma Test on this site shows you bands of alternating gray at different gamma values - the band that disappears into a flat mid-gray reveals your display's current gamma.

Adjust your monitor's gamma setting in the OSD until the gamma 2.2 band flattens.

Step 3: Software calibration (free)

Windows built-in display calibration (Search > "Calibrate display color") walks you through setting white point, gamma, and color balance using test patterns and your eyes. It is imprecise but useful.

DisplayCAL (free, open source) combined with a cheap colorimeter (Calibrite ColorChecker Display, ~$130) gives you a proper ICC profile that you can load into Windows, macOS, or your color-managed applications.

Step 4: Hardware calibration (accurate)

A colorimeter measures actual screen output in cd/m², CIE xy color coordinates, and delta-E error values. Software like DisplayCAL drives the monitor to display test patches, measures the actual output, and builds a profile that corrects the difference.

Resulting ICC profiles are automatically used by color-managed apps (Photoshop, Lightroom, Capture One, Final Cut Pro, Chrome, Firefox). Applications that are not color-managed (many games, video players) ignore the profile.

Quick free validation

Use the Color Accuracy Test and Gamma Test on this site to spot obvious calibration errors without hardware. If your gray gradient shows banding, your gamma is off. If the white/gray fields look clearly blue or yellow, your white point needs adjustment.

How to Calibrate Your Monitor: A Beginner's Guide