Magento 1 to 2 Migration: A 2026 Guide to Doing It Right

Magento 1 reached end of life on June 30, 2020. If you are reading this in 2026 and still running it, your store has gone almost six years without official security patches. That is the real headline. The migration to Magento 2, now Adobe Commerce, is not an upgrade you click through. It is a rebuild, and the longer it waits the more it costs you in risk. We have run this migration for stores ranging from a few hundred SKUs to tens of thousands, and the playbook below is the one we actually use.

Why this is urgent, not optional

Three things are working against an unmigrated Magento 1 store. There are no security patches, so every vulnerability found since 2020 is still open on your site. PCI compliance is at risk because an unsupported platform fails most auditors, which can put your ability to take card payments in jeopardy. And extension and gateway support is drying up, so the modules you rely on stop getting updates and eventually break on newer PHP. We have seen M1 stores get defaced or skimmed through known holes that a patch would have closed years ago. If you take payments, treat this as a deadline you already missed.

It is a re-platform, not an update

This trips up a lot of store owners. Magento 2 was rewritten from the ground up. Your theme will not carry over. Your extensions will not carry over, because the M1 versions do not exist for M2 and have to be repurchased or replaced. Your custom code has to be rebuilt against a different architecture. What does move across, with care, is your data: products, categories, customers, orders. Think of it as building a new store and pouring your old data into it, not flipping a switch on the same store.

The migration, step by step

1. Audit what you have

List every extension and ask one question about each: do we still use it? Most stores carry dead weight. We typically cut a third of the extension list during this step. Document your custom features, your integrations (ERP, shipping, marketing), and your theme quirks. This audit decides the size of the whole project.

2. Build the Magento 2 environment

Stand up a clean Magento 2.4.7 install on hosting that meets the real requirements: PHP 8.3, MySQL or MariaDB, Elasticsearch or OpenSearch, Varnish, Redis. Magento 2 is heavier than M1 and will punish underspec hosting. Get this right before you migrate anything.

3. Migrate the data

Adobe ships an official Data Migration Tool that moves settings, then catalog data, then deltas (orders placed while you prepare). It works, but it is fussy about matching versions and it does not move media or custom tables, which you handle separately. For messy databases we sometimes use Cart2Cart to save time, then verify everything by hand. Budget real hours for cleanup. The tool moves rows; it does not fix the bad data that accumulated over a decade.

4. Rebuild theme and extensions

You have a choice here that did not exist a few years ago. The default Luma theme works, but for new builds we usually go with Hyva, a modern frontend that loads far less JavaScript and scores much better on Core Web Vitals. For each old extension, find the M2 version, find a better replacement, or rebuild the feature as custom code. This is where most of the budget goes.

5. Test, then test the money paths again

Check checkout with real payment methods in sandbox, tax calculation, shipping rates, and every integration. Pull a list of your top-selling URLs from the old site and make sure each one redirects to its new equivalent, because a botched redirect map is the fastest way to lose the rankings you spent years earning.

6. Go live

Run a final delta migration of recent orders, put the old site in maintenance mode, switch DNS, and watch the logs. Keep the M1 server frozen and reachable internally for a few weeks so you can compare anything that looks off.

What it costs and how long it takes

Anyone who quotes a migration price before seeing your extension list is guessing. That said, here is the honest range we see. A small store with a stock theme and a handful of common extensions runs roughly 6 to 8 weeks and a five-figure budget. A mid-size store with custom features and integrations is more like 3 to 4 months and can pass $50,000 once you count theme work, extension licenses, and testing. Most of the cost is the rebuild, not the data move. We break down the full pricing picture in how much does Magento cost.

Should you even move to Magento 2?

Here is the part most migration guides skip because they only sell Magento. If you are a large catalog with complex pricing, B2B needs, or heavy customization, Magento 2 or Adobe Commerce is the right home, and the open source versus paid choice is worth understanding before you commit (we cover it in Adobe Commerce vs Magento Open Source). But if your M1 store was small and you were always fighting the platform’s weight, a re-platform is the perfect moment to ask whether WooCommerce fits better. We have moved several smaller M1 stores to WooCommerce and they were cheaper to run afterward. We laid out that trade-off in Magento vs WooCommerce. Migrating to the wrong platform is more expensive than migrating late.

FAQ

Can I just upgrade Magento 1 to Magento 2?

No. Magento 2 is a separate platform, not a new version of M1. You migrate your data into a freshly built M2 store and rebuild the theme and extensions.

Will I lose my SEO rankings?

Not if the redirect map is done properly. Every old URL needs a 301 to its new equivalent, and the migration should preserve URL structure where possible. Skipping this is the most common way stores tank their traffic after migrating.

How long does a Magento 1 to 2 migration take?

Roughly 6 to 8 weeks for a small store and 3 to 4 months for a mid-size store with custom features. The extension and theme rebuild drives the timeline, not the data transfer.

Is it too late to migrate in 2026?

It is overdue, not too late. The risk of staying on an unsupported platform grows every month, so the sooner you migrate the less exposure you carry. If budget is the blocker, our Magento support team can lock down the current store while you plan.