The Website Migration ROI Calculator

You don’t need another framework. You need an answer. Plug in your traffic, conversion rate, AOV, and maintenance costs. The calculator runs the math for a 16-month financial model and returns your exact ROI percentage and payback period in under 5 minutes. CFO-ready, no slide deck required.

Used by marketing teams at:

OUTCOMES

What you’ll walk away with

Your exact ROI percentage in under 5 minutes

Plug in your traffic, conversion rate, AOV, and maintenance costs. The calculator returns your ROI percentage in real time. No math, no formulas to copy, no spreadsheet to build from scratch.

A 16-month financial model broken down by phase

Pre-migration, migration months, and post-migration. Visitors, conversion rate, AOV, total revenue, and gross profit are calculated for every single month so you can see exactly when the project pays for itself.

Your projected additional annual revenue in dollars

Driven automatically by the formula: improved visitors x improved conversion rate x improved AOV. Change one input and watch the projection update everywhere it’s referenced.

Your annual maintenance savings, calculated against today's costs

Old maintenance vs. new maintenance, annualized and compared side by side. The exact dollar value of getting off the platform that’s bleeding budget.

Migration cost breakdown across all 6 categories

Design and customization, development and technical work, SEO preservation, content migration, testing and QA, and post-migration support. Pre-populated with realistic ranges and totaled automatically.

A live model your CFO can audit cell by cell

Every formula visible in the spreadsheet. Change conversion rate from 3% to 1.5%, see ROI drop in real time. Sensitivity analysis built in.

NUMBERS

Why we built this calculator

We’ve executed dozens of migrations to Webflow. The numbers below are why your team should trust the math in this tool.

500+

Page website migrations executed with full URL restructuring and zero loss of organic traffic.

50+

Websites migrated for B2B companies since 2021.

100+

B2B clients served across 25+ countries and counting.

4 months

Average migration payback period for our clients.

553%

Minimum ROI across 50+ migrations we’ve delivered.

56%

Average uplift in organic traffic in the first three months after migration.

100+

Technical SEO audits and migration plans built from scratch.

BEFORE & AFTER

From hours of math to a 5-minute ROI

Without the calculator
  • You rebuild the ROI math from scratch in a Google Sheet, hoping the formulas are right.
  • You forget half the migration cost categories and end up with a number that doesn’t survive review.
  • Your model shows one scenario. The CFO asks “what if traffic only grows 10%?” and you don’t have an answer.
  • You can’t show when the project pays for itself, so leadership punts the decision to next quarter.
  • You make the case with adjectives.
  • The conversation ends in “we’ll think about it.”
With the calculator
  • A pre-built spreadsheet with every formula already wired and tested.
  • Six cost categories pre-populated, totaled automatically.
  • Change one input, watch every number update in real time. Sensitivity analysis built in.
  • A 16-month phased model with a clear payback month visible at a glance.
  • You make the case with a CFO-auditable spreadsheet.
  • The conversation ends in a budget approval.

Testimonials

What marketers are saying about the calculator

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AWARDS

This calculator is from real, award-winning Webflow practitioners

Every formula, cost range, and benchmark in this spreadsheet came from real B2B website migrations we’ve executed. The badges below are the receipts.

Clutch Top Web Agency
in Poland
HubSpot Solutions
Provider
Semrush Certified
Expert
CSS Design Awards Honorable Mention x2
Webflow Premium
Partner
Awwwards Honorable Mention x2

Get a defensible ROI in the next 5 minutes

Your CMS is slow. Your campaigns wait on engineers. Every leadership conversation ends with “we’ll revisit it next quarter.” Download the calculator, plug in your numbers, and walk into your next meeting with a payback period and ROI percentage anyone on the finance team can verify.

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