How long does a Shopify migration take?

Most Shopify migrations take three to eight weeks of calendar time. A small store on a common platform moves in two to three weeks; a large, plugin-heavy store with custom checkout takes six to eight or more. The real driver is not product count — it is the source platform and how much custom functionality you carry over.

I am a senior Shopify developer in Delhi, and I have run migrations off WooCommerce, Magento, BigCommerce, Wix, GoDaddy, and legacy Shopify. The single most common question before a project starts is "how long?" — so here is the honest version, with the ranges I actually quote and the things that quietly turn a four-week job into a ten-week one.

What's the realistic answer — in one number?

If you need a single figure to plan around, use four to six weeks for a typical D2C store. That is the middle of the distribution: a real catalog, a custom or semi-custom theme, one or two integrations, and a proper redirect map.

The stores that finish faster are genuinely simple — a few hundred clean products, a stock theme, no subscriptions. The stores that take longer are carrying custom functionality that has no clean auto-port: a legacy subscription engine, a heavily customized checkout, B2B pricing tiers, an ERP hook. Those are engineering problems, and engineering problems take engineering time.

The mistake is assuming the timeline scales with the number of products. It does not. It scales with the number of decisions and rebuilds.

How long does a migration take by source platform?

The platform you are leaving sets the baseline, because it decides how cleanly your data and functionality port. Here is the range I quote, with the price band alongside it so you can plan budget and calendar together.

Prices as of 2026; scope drives the final number. The full band is on my Shopify migration rates page.

The pattern: the more the old platform let you customize, the longer the move takes — because everything you customized has to be re-implemented and re-tested on Shopify. A locked-down builder like Wix is quick on functionality but fiddly on export and redirects. A flexible platform like Magento is the opposite: the data is exportable, but you built a decade of custom logic on top of it, and all of it needs a new home.

Platform-specific detail lives in the dedicated guides — WooCommerce to Shopify, Wix to Shopify, Squarespace to Shopify, and Magento to Shopify Plus. This post is about the clock, not the platform.

Does catalog size change the timeline?

Less than most people assume. Here is how the phases scale with product count:

The reason big catalogs do not blow up the timeline the way people fear is that import is a repeatable process. Once the field mapping is right, moving 10,000 products is not twenty times harder than moving 500 — it is the same script running longer, plus a bigger QA pass.

What actually stretches the timeline is variant and data complexity, not raw count. A 500-SKU store where every product has custom options, size charts in metafields, bundle logic, and inconsistent source data can take longer than a tidy 5,000-SKU catalog with three variants each. If you are moving custom product options that AI shopping assistants and your storefront both need to read cleanly, that structuring work is real — I cover the approach in Shopify metafield strategy for AI-readable data. Clean source data is the single biggest time-saver in the whole project.

What are the phases of a Shopify migration?

Every migration I run breaks into six phases. Knowing them tells you where the weeks actually go — and where your input becomes the bottleneck.

1. Audit and mapping (2–4 days). Full crawl of the old site: every URL, product, page, and blog post. This produces the redirect map and the scope. Nothing else starts until this is done.
2. Theme build or port (1–3 weeks). The biggest single block. A stock or lightly adapted theme is quick; a custom design is where most of the calendar sits. Design approvals live here, and this is where client latency hurts most.
3. Data import (2 days – 2 weeks). Products, collections, customers, orders. Scales with catalog size and data cleanliness, as above.
4. Functionality rebuild (variable — 0 to several weeks). Subscriptions, custom checkout, B2B pricing, apps, integrations. This is the wildcard that separates a four-week job from a ten-week one.
5. Redirects, SEO, and QA (3–5 days). The 301 map goes live-ready, metadata is checked, and everything is tested on staging. Skipping or rushing this phase is how migrations lose rankings.
6. Cutover and monitoring (1 day + 30–90 days). The DNS switch is a short, planned window. Then a monitoring period watches Search Console and analytics for redirect misses and crawl errors.

Notice that phases 2 and 4 hold most of the time, and both are where scope decisions live. The data move — the part people worry about — is rarely the long pole.

Can I keep selling while the migration happens?

Yes, and you should. The entire build happens on a separate Shopify store or a password-protected staging environment while your existing site keeps taking orders. Nothing goes dark.

Cutover — the moment the new store goes live and the redirects switch on — is a short, planned window, usually under a day and often scheduled for a low-traffic hour. The only real care needed is reconciling any orders and inventory changes that happen between the final data pull and go-live, which is a routine sync, not a rebuild.

This is also why migration timelines are measured in calendar weeks of work, not downtime. Your store's downtime in a well-run migration is effectively zero. If a developer is telling you the store has to go offline for days, that is a red flag about their process, not a fact about Shopify.

What quietly adds weeks?

These are the things that turn an on-schedule migration into a slipping one. In rough order of how often they bite:

• Custom functionality with no clean auto-port. Subscriptions on a legacy billing engine, a bespoke checkout, B2B wholesale tiers, or an ERP integration. Each has to be rebuilt and tested. This is the number-one timeline multiplier.
• Slow client-side decisions. Design approvals, content sign-off, and "let me check with the team" delays. A migration stalls faster waiting for a homepage approval than waiting for any line of code. This one is entirely within your control.
• Messy source data. Inconsistent SKUs, missing images, duplicate products, half-filled fields. All of it has to be cleaned before import, and cleanup is invisible until you are in it.
• Scope creep mid-project. "While we're at it, can we also redesign the PDP and add a quiz?" Every mid-flight addition resets part of the schedule. Redesigns belong before or after the migration, not inside it — the cost side of that is in Shopify store redesign cost.
• Redirect-map size. A content-heavy site with thousands of blog URLs needs every one mapped to protect rankings. That is careful work, and it is non-negotiable — migrating without losing SEO is entirely about getting this right.

The theme through all five: the data is predictable. The custom work and the decisions are what move the number. When I quote a range instead of a single date, this is why — the spread is almost entirely functionality and approval latency.

How does a Shopify Plus migration compare?

Plus migrations run longer — typically six to twelve weeks — for one reason: Plus stores carry more custom logic. A Plus migration is not really a data move at all; it is a re-engineering of everything that made the old store a Plus-scale operation.

Functions replace legacy scripts. Flow rebuilds automations. Wholesale and B2B pricing get reconfigured. Markets handles the international setup that used to be a bolt-on. Checkout customization — the whole reason many brands are on Plus — has to be re-implemented and tested end to end. None of that has a one-click import, and all of it needs QA before it touches a real customer. If you are weighing whether the move is even worth it yet, when to upgrade to Shopify Plus is the honest read.

The rule of thumb: a standard migration's timeline is set by the theme and the data; a Plus migration's timeline is set by the checkout, the pricing logic, and the integrations. Budget accordingly — both in weeks and in scope.

How do I plan around the timeline?

Four things shorten a migration more than anything a developer can do alone:

1. Clean your data before you hand it over. Deduplicate products, fill missing fields, fix broken images. Every hour you spend here saves two in QA.
2. Approve fast, or delegate approval. Name one decision-maker who can sign off on design and content quickly. This single choice often saves a week.
3. Freeze scope before the build starts. Write down exactly what moves and what changes. Put redesigns and new features in a separate phase — the difference between a build and a migration is covered in cost to build a Shopify website.
4. Plan cutover for a quiet window. A low-traffic day and hour makes reconciliation trivial and keeps any hiccup invisible.

Do those four and a migration that could take eight weeks often lands in five. Skip them and a five-week job drifts to nine — not because the work is hard, but because it keeps waiting.

So — how long, really?

For a typical D2C brand: four to six weeks, keeping the store live the whole time, with a short cutover window and a monitoring period after. Simpler stores finish in two to three; Plus and heavily customized stores run six to twelve. The number is set by your source platform and your custom functionality, not by how many products you sell — and the biggest lever on the calendar is how fast decisions get made on your side.

What's next

If you are planning a move and want a real date instead of a range, the Shopify migration expert page lays out exactly how I run these — full crawl and redirect map first, zero-data-loss import, live store throughout, and a monitoring window after cutover. It is a fixed price against a written scope, and you work directly with me, not an account layer.

Tell me your current platform, your rough product count, and whether you have subscriptions, B2B, or a big blog, and I will come back with an honest timeline and a fixed quote. Start here: begin your project.

Related reads

• Shopify migration checklist for Indian D2C brands — the step-by-step you can run against any migration.
• Shopify migration without losing SEO — the redirect and ranking-protection detail in full.
• WooCommerce to Shopify migration — the platform-specific guide most migrations start from.

Sources

• Shopify — import your data to Shopify
• Google Search Central — site migrations
• Shopify — store transfer and migration overview