DisplayCAL

DisplayCAL is a display calibration and profiling solution built on ArgyllCMS, available for Linux, macOS, and Windows. With a supported measurement instrument, it measures displays and creates calibrations and ICC profiles, including for multi-display setups. Users can verify profiles and display devices, check uniformity through measurements, and create video 3D LUTs with optional CIECAM02 gamut mapping. Colorimeter corrections can be imported from vendor software or created from measurements when a spectrometer is available. The test chart editor creates patch charts and accepts pasted data from CGATS, tab-delimited CSV, and spreadsheet applications. The site documents madVR and DaVinci Resolve 10.1 or later as pattern generators, and Chromecast support is an optional dependency. DisplayCAL requires ArgyllCMS 1.0 or newer and a supported measurement instrument. It is free software under GNU GPL version 3 or later, supplied without warranty. Download files include SHA-256 checksums for verification.

DisplayCAL covers calibration, profiling, verification, and LUT creation across three desktop platforms. Users should confirm they have the required software and measurement hardware.

DisplayCAL suits users who need to calibrate or profile displays and have a supported measurement instrument. It also fits workflows involving ICC verification, multi-display setups, or video 3D LUTs.

DisplayCAL is a free, open-source display calibration and profiling application for users who need measured color rather than factory defaults. It suits photographers, video professionals, color-managed designers, and multi-monitor owners who already have compatible hardware. Its broad calibration, verification, and LUT toolkit is compelling, but the required ArgyllCMS installation and measurement instrument rule out casual screen tweaking.

Overview

DisplayCAL builds its workflow on ArgyllCMS, using supported measurement instruments to calibrate displays and create ICC profiles. It can export those profiles, handle several displays, and check whether profiles and display devices perform as expected. Uniformity measurements add a way to examine consistency across a panel instead of stopping after a single calibration pass.

The software is free under GNU GPL version 3 or later and comes without warranty. DisplayCAL is maintained by Florian Höch, while Graeme W. Gill maintains ArgyllCMS. Voluntary contributions support development and technical assistance. Download integrity is addressed with SHA-256 checksums.

For category comparisons, see Display Calibration Software and Color Management Software.

Key features

• Measured calibration and ICC profiles: A compatible instrument supplies the readings DisplayCAL uses to create calibrations and ICC profiles. Profile export and LUT calibration make the results usable in broader color-managed workflows, not just inside the app.
• Multi-display workflows: Multi-display setups and multi-monitor calibration are supported, making DisplayCAL a practical choice for workstations that need screens aligned rather than treated independently.
• Verification and uniformity: The application verifies and reports on ICC profiles and display devices, then measures display uniformity. These checks help identify whether a calibrated screen remains consistent and whether panel variation matters to the work.
• Video 3D LUTs: DisplayCAL can create video 3D LUTs and optionally apply CIECAM02 gamut mapping. That gives video-oriented users a route from measurement to display or playback calibration beyond ordinary desktop profiles.
• Colorimeter corrections: Corrections can be imported from vendor software or created from measurements when a spectrometer is available. This is useful when a colorimeter needs display-specific correction, but spectrometer access is required for creating new corrections.
• Custom test charts: Its editor creates patch charts and accepts content pasted from CGATS, tab-delimited CSV, and spreadsheet applications, supporting tailored measurement sets instead of only fixed charts.
• Pattern-generator integrations: Documentation covers madVR and DaVinci Resolve 10.1 or newer as pattern generators. Chromecast support is available as an optional dependency, which may help users whose calibration chain includes that device.

Pricing

DisplayCAL — free: The sole plan includes the complete free-software offering under GNU GPL version 3 or later. There is no trial period, renewal charge, seat quota, or usage subscription to manage. Financial contributions are optional.

The zero price does not remove the practical setup cost: DisplayCAL requires ArgyllCMS 1.0 or newer and a supported measurement instrument. Buyers without that software or hardware cannot use the calibration features, so a free license is not the same as a no-cost color-management setup.

Platforms

DisplayCAL supports Linux, macOS, and Windows. The same cross-platform availability covers calibration, ICC profile export, LUT calibration, multi-monitor calibration, and HDR calibration. Users should still confirm that their instrument and ArgyllCMS installation are supported on the chosen operating system.

Who it's for

Choose DisplayCAL when accurate, repeatable display measurement matters and you are prepared to work with a colorimeter or spectrometer. Photographers and designers gain ICC profile creation and verification; video users gain 3D LUT output and documented pattern-generator integrations; multi-screen workstations gain coordinated calibration and uniformity checks.

Look elsewhere if you want a monitor utility that works without measurement hardware, or if installing and managing ArgyllCMS is unacceptable. DisplayCAL's breadth rewards technically prepared users rather than people seeking an instant visual preset.

Pros and cons

Pros

• Comprehensive free toolkit: Calibration, ICC profiles, verification, uniformity measurement, LUT creation, and multi-display support are included without a paid tier.
• Useful video path: 3D LUT generation, optional CIECAM02 gamut mapping, and madVR/DaVinci Resolve pattern-generator documentation extend it beyond basic desktop profiling.
• Flexible chart and correction work: Imported correction data, spectrometer-based correction creation, and pasted chart formats support specialized workflows.
• Cross-platform reach: Linux, macOS, and Windows support broadens its fit for mixed-device studios.

Cons

• Hardware prerequisite: A supported measurement instrument is mandatory, so software alone cannot calibrate a display.
• ArgyllCMS dependency: ArgyllCMS 1.0 or newer must be installed, adding setup and compatibility responsibility.
• No warranty: The GPL software is supplied without warranty, which matters to users expecting commercial support guarantees.

Alternatives

ArgyllCMS is the underlying free, cross-platform command-line toolkit; choose it when you want direct command-line control, noting its AGPLv3 terms and separate license requirement for commercial or non-GPL use.

ColourSpace is the better fit for macOS or Windows users seeking a paid product with a trial and upgrade path; its free ZRO plan is limited to manual calibration and verification and has no LUT capability.

EIZO ColorNavigator 7 is preferable when you use a compatible EIZO ColorEdge monitor and want a free vendor-specific download.

PatternSpace suits macOS users who primarily need display test patterns, with a free set of 100-plus patterns and a one-time Pro upgrade.

pacsDisplay is a free open-source option for Windows 10 and 11.

PsyCalibrator is a free alternative for users already working with MATLAB or GNU Octave, Psychtoolbox, and a compatible Spyder instrument.

Buddi is free budgeting software, not a display-calibration replacement.

Microsoft Quick Assist is a free support tool rather than a color-management alternative.

Verdict

DisplayCAL is the right choice for technically equipped photographers, video users, designers, and multi-monitor owners who want a broad, free calibration and profiling workflow across desktop platforms. Its main reason to choose it is the combination of ICC, verification, uniformity, and video-LUT capabilities without a subscription. Look elsewhere if you lack a supported instrument or want a simpler, vendor-managed setup that does not depend on ArgyllCMS.