Don't Guess Your Migration Budget
Moving off a legacy framework or swapping languages entirely can have a massive impact on cost and timeline, yet it's often hard to size the effort before you start. This tool takes codebase file count, available team size, and migration type, then gives you a quick estimate of the expected timeline and labor cost.
Difficulty Factor by Migration Type
| Migration Type | Factor per File |
|---|---|
| Infrastructure Only | 0.2 days/file |
| Partial (framework only) | 0.4 days/file |
| Full (language + framework) | 1.0 days/file |
An Estimate, Not a Guarantee
This calculation is a simple file-count estimate, so actual timelines can vary significantly based on test coverage, legacy code complexity, and the number of external dependencies. Before committing to a full migration, running a pilot migration on a small module helps calibrate the factor to your actual codebase.
Frequently Asked Questions
File count is multiplied by a difficulty factor for the migration type to get total person-days, then multiplied by a daily rate.
Infrastructure-only migrations are lightest, framework swaps are moderate, and full migrations covering both language and framework take the longest.
Yes, this is a simple file-count estimate. Test coverage, legacy code complexity, and dependencies can shift the real cost.