What Actually Happens to Your Conversion Rate When You Migrate From Magento to Shopify Plus

The headline numbers

When companies migrate from Magento to Shopify Plus, industry data suggests conversion rate improvements in the range of 15 to 40 percent. That's not a hopeful estimate: it's the observed range across a significant sample of migrations.

In one well-documented case, desktop conversions increased by 40 percent and mobile conversions jumped by roughly 65 percent after migrating to Shopify Plus. Mobile, in particular, tends to see the largest gains because Shopify's checkout experience was built for mobile-first behaviour in a way that Magento's simply wasn't.

Shopify's native checkout process alone is linked to an average conversion lift of around 15 percent compared to Magento. When you layer in tools like Shop Pay, which gives returning customers a one-tap checkout experience, some brands have reported improvements of up to 50 percent.

For a brand doing $5 million in annual revenue, even a conservative 15 percent conversion lift translates to meaningful top-line growth without spending a dollar more on acquisition.

Where the lift comes from

The conversion improvement isn't magic. It comes from a handful of compounding factors that Shopify Plus handles better out of the box than Magento typically does without heavy customisation.

Checkout performance

Magento's checkout flow has historically been one of its weakest points. Multiple page loads, slow rendering, and a clunky mobile experience all contribute to cart abandonment. Shopify Plus uses a single-page, optimised checkout that loads faster and reduces friction at every step. It's the same checkout infrastructure that powers some of the largest DTC brands in the world, and Shopify iterates on it constantly.

Page speed

Site speed directly impacts conversion. A one-second delay in mobile load time can reduce conversions by up to 20 percent. Shopify Plus, particularly on its Hydrogen headless stack, delivers significantly faster page loads than most Magento deployments, especially instances that have accumulated years of plugins, custom code, and technical debt.

Mobile experience

Over 70 percent of ecommerce traffic now comes from mobile devices. Shopify Plus was architected for this reality. Magento, originally built in an era when desktop dominated, often struggles to deliver a truly native-feeling mobile experience without substantial frontend rework.

Shop Pay and accelerated checkout

Shop Pay is Shopify's accelerated checkout for returning customers. It stores payment and shipping details, enabling one-tap purchases. For brands with a high percentage of returning customers, this is a conversion multiplier. Industry data shows Shop Pay can increase checkout-to-conversion rates by up to 50 percent compared to standard guest checkout flows.

What a migration actually looks like

A well-executed Magento to Shopify Plus migration isn't a lift-and-shift. It's an opportunity to rethink the entire customer experience from the ground up. The brands that see the highest conversion gains treat migration as a strategic rebuild, not just a re-platform.

That means auditing the existing customer journey, identifying the friction points in the current Magento experience, and designing a Shopify Plus storefront that eliminates them. It means investing in performance: fast page loads, optimised images, clean code, and building a checkout flow that's been tested against real user behaviour.

The technical migration itself, moving product data, customer records, order history, and integrations, is the table stakes. The conversion gains come from the strategic and UX layer on top. Our Shopify migration service is built around this approach.

Setting realistic expectations

The conservative baseline: 15% conversion lift

This is the industry average for a well-executed Magento to Shopify Plus migration. Most brands achieve at least this level of improvement simply by moving to Shopify's faster, cleaner checkout infrastructure. If your current Magento setup is particularly dated or slow, the gains could be higher.

The upside: 40-65% with optimised execution

Brands that invest in mobile-first UX design, adopt Shop Pay, and tune site performance consistently see the upper range of improvement. Mobile conversion tends to see the largest percentage gains because Shopify's mobile checkout is genuinely best-in-class.

The settling period

Don't panic if conversion dips slightly in the first two to four weeks after launch. This is normal. Returning customers need to re-familiarise themselves with the new experience, browser caches need to clear, and any analytics tracking changes need time to stabilise. True conversion gains typically become clear within 60 to 90 days post-migration.

The revenue impact

If you're currently converting at 2 percent on $5 million in annual revenue, a 15% conversion lift takes you to 2.3%, potentially adding $750,000 in annual revenue at the same traffic levels. A 40% lift takes you to 2.8%, potentially adding $2 million.

These aren't guaranteed outcomes, but they illustrate why migration is fundamentally a revenue conversation, not just a technology conversation.

The bottom line

Magento served its era well. But the ecommerce landscape has shifted toward mobile, toward speed, toward frictionless checkout. Shopify Plus was built for this moment, and the conversion data reflects it.

The question isn't whether Shopify Plus will improve your conversion rate. The data strongly suggests it will. The question is how much, and that comes down to execution. That's what we do at Flux: we don't just migrate platforms, we engineer the commerce infrastructure that drives measurable growth.