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Unity Version Migration Checker

Unity Version Migration Checker

Thinking about upgrading to Unity 6? Select your current version and we'll show you the breaking changes, deprecated APIs, and migration steps you need to know about. No sign-up required.

Step 1: Select your current Unity version
Step 2: Select your target Unity version
Step 3: Select the features your project uses

Rendering

Networking

Assets

Build

Plugins

UI

Input

Services

Monetisation

XR

Select the features your project uses above to see your migration report.

Need help with your migration?

Unity version migrations look straightforward on paper but rarely are in practice. Plugin incompatibilities, subtle rendering differences, and undocumented behaviour changes can turn a simple upgrade into weeks of debugging. If you'd like an expert assessment of your project's migration path, our technical audit covers this in detail.

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Frequently Asked Questions

Migration time depends on your source version, project complexity, and which features you use. A small project moving from Unity 2022 to Unity 6 with standard features might take a few days. A large project moving from Unity 2019 with custom render pipeline code, multiplayer networking, and third-party plugins could take one to two months. The biggest time sinks are typically custom render passes (which need rewriting for the Render Graph API), third-party plugin compatibility, and networking code.
Technically yes, but it is not always advisable. Unity supports direct upgrades between any two versions, but each version gap introduces additional risk. For large jumps (e.g. Unity 2019 to Unity 6), we recommend stepping through intermediate LTS versions. This lets you isolate breaking changes, fix issues incrementally, and verify stability at each stage. The cost estimator above shows a recommended migration path for your specific version gap.
Third-party plugin compatibility is the most common migration blocker. Popular, actively maintained plugins (DOTween, Rewired, Photon, Mirror, FishNet) generally release Unity 6 compatible versions shortly after launch. However, abandoned or niche plugins may not receive updates. Before starting your migration, check each plugin's documentation or repository for Unity 6 compatibility. If a critical plugin is unsupported, you may need to find an alternative or write a replacement.
It depends on your project's needs and timeline. Unity 6 marks the Built-in Render Pipeline as maintenance-only, meaning no new features will be added. For new projects, URP or HDRP is strongly recommended. For existing projects on Built-in, consider migrating if you need features like the GPU Resident Drawer, Render Graph API, or improved mobile performance. If your project ships soon and Built-in meets your needs, you can defer the migration. Keep in mind that a render pipeline migration is a significant undertaking that involves re-authoring materials, updating shaders, and adjusting lighting.

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