Learn your potential modernization costs, savings, and risk score, before you talk to anyone.
Legacy Application Modernization Cost Calculator
Get your numbers in under 10 minutes.
Answer a few questions about your legacy application and get a personalized report with your cost of inaction, modernization investment range, projected ROI, and risk score.
- Free, no email required to start
- Takes under 10 minutes
- Built by 25-year legacy application modernization veterans
What you'll learn FROM your modernization report
What Does Legacy Modernization Actually Cost?
What Will Continuing to Maintain Your Legacy System Cost You?
What you’ll spend over the next 5 years maintaining your legacy application system as-is, including hidden costs most teams undercount.
What Should You Budget for Modernization?
A realistic legacy application modernization cost based on your application’s size, complexity, and integrations.
How Long Until Your Modernization Investment Pays Off?
When your modernization investment pays for itself and what you save every year after that.
What Is Your Legacy System Failure Risk?
A data-driven assessment of what happens if your legacy application system fails, based on bus factor, age, and criticality.
Trusted by Organizations Modernizing their Legacy Application and Legacy Systems
What Information You'll Need
Team Size
Application Count
Maintenance Cost Range
No exact server logs or sensitive data required. Ballpark estimates work perfectly. Not sure about your numbers? The calculator includes built-in estimation guides for technical inputs like codebase size.
Still Running Legacy Applications?
Find out what it's actually costing you.
Built for technical decision makers who want real numbers, not sales pitches. Every calculation is based on 25 years of real modernization projects.
Looking for a Platform-Specific Estimate?
No exact server logs or sensitive data required. Ballpark estimates work perfectly. Not sure about your numbers? The calculator includes built-in estimation guides for technical inputs like codebase size.
Questions
Legacy Application Modernization Cost FAQs
How much does it cost to modernize a legacy application?
Based on 25 years of real projects, costs range from under $100K for contained single-application work to $1M+ for complex enterprise migrations. The calculator gives you a directional range based on your specific profile.
What is the ROI of modernizing a legacy application?
Most organizations see full payback within 18–36 months. ROI comes from reduced maintenance cost, eliminated developer dependency on scarce legacy skills, and the ability to integrate modern tools including AI and cloud services.
What is the real cost of doing nothing?
Legacy systems typically cost 2–4x more to maintain annually than their modern equivalents, not counting the cost of an unplanned failure. The calculator models your five-year cost of inaction before showing modernization investment.
How long does legacy application modernization take?
The calculator works for Visual FoxPro, VB6, Delphi, MS Access, and other legacy platforms. The formulas account for your specific application profile regardless of the underlying technology.
Is it better to rewrite or migrate a legacy application?
That depends on codebase quality, business logic complexity, and available documentation. We help you determine the right path during a discovery phase — the calculator gives you initial cost ranges for both approaches.
What information do I need before starting the calculator?
Team size, rough application count, and a ballpark maintenance budget are enough to get started. The calculator includes built-in estimation guides for technical inputs like codebase size.
How is this different from a vendor quote?
This is not a quote. It is a planning model calibrated to 25 years of real project data across hundreds of modernization engagements. It gives you a directional range for internal planning before you talk to anyone.
Stop guessing what legacy application modernization would cost.
Get your numbers in 10 minutes.
No sales call. No committee required. Just the clarity you need to make the business case internally.