This is usually one of the first questions merchants ask, and one of the hardest to answer with a single number, because “how long” depends heavily on what you’re actually migrating, not just that you’re migrating to Shopify. A 150-SKU store with a stock theme and no complex integrations can genuinely go live in a matter of weeks. A large, highly customised catalogue with ERP integrations and Shopify Plus requirements can take several months. Anyone who quotes you a fixed timeline without first understanding your store’s specifics is guessing.
This post breaks down the actual phases of a migration, realistic time ranges for each, and what specifically stretches or compresses the timeline, so you can plan launch dates, marketing campaigns, and internal resourcing with a genuinely realistic picture instead of an optimistic one.
The Short Answer
For a small-to-mid-sized store with reasonable complexity, a realistic end-to-end timeline is 4 to 10 weeks from kickoff to go-live. Larger or more complex stores, heavy customisation, multiple integrations, Shopify Plus, B2B logic, commonly run 3 to 6 months. These are general ranges based on typical project shapes, not a guarantee for any specific store; your own timeline depends on the variables below.
The Phases of a Shopify Migration (and How Long Each Takes)
Phase 1: Discovery and planning, typically 1-3 weeks
This is the phase most DIY migrations skip or rush, and it’s the one that determines whether everything after it goes smoothly. It covers:
- Auditing your current store’s data, catalogue structure, and app stack
- Deciding Shopify vs Shopify Plus
- Scoping design (stock theme vs custom build)
- Mapping your full URL structure for SEO redirects
- Setting a realistic project plan and timeline based on what’s actually involved
Rushing this phase is the single biggest cause of blown timelines later, problems that would have taken a day to catch in discovery can take weeks to unwind once development is underway.
Phase 2: Store setup and theme development, typically 2-8 weeks
This is usually the largest time block, and the one most sensitive to design complexity:
- Stock theme with light customisation: commonly 1-3 weeks
- Customised premium theme: commonly 3-6 weeks
- Fully custom or headless build: commonly 6-12+ weeks
This phase covers building out your theme, setting up collections and navigation, configuring settings (shipping zones, tax, GST), and building any custom functionality your store needs beyond what a theme provides out of the box.
Phase 3: Data migration, typically 1-4 weeks, often running in parallel with Phase 2
Moving products, customers, and historical orders across. Timeline here depends heavily on catalogue size and complexity, simple variant structures migrate quickly; custom metafields, subscription products, and complex variant matrices take longer to map and verify correctly.
Phase 4: App and integration setup, typically 1-4 weeks, often running in parallel
Reinstalling and configuring your app stack, payment gateways, shipping (Australia Post, StarShipIT, Shippit), accounting (Xero, MYOB), reviews, email marketing. Simple integrations (drop-in apps with standard configuration) are quick; custom API integrations with ERP or accounting systems can be a significant chunk of the timeline on their own.
Phase 5: SEO migration, typically 1-2 weeks, running alongside other phases
Building the redirect map, preserving metadata, rebuilding schema markup. This needs to be genuinely finished, not “mostly done”, before launch, since it’s the phase most responsible for post-launch traffic stability.
Phase 6: QA and testing, typically 1-2 weeks
Full testing of checkout, shipping calculations, product display, redirects, forms, and any custom functionality on a staging store before anything goes live. This phase should not be compressed to save time, issues caught here are cheap; the same issues caught after launch are expensive and public.
Phase 7: Launch, typically 1 day, timed carefully
DNS cutover and go-live, ideally scheduled during your lowest-traffic period (often overnight or a low-volume day) to minimise disruption if anything needs quick fixing.
Phase 8: Post-launch monitoring, typically 2-4 weeks of active attention
Watching Search Console for crawl errors, monitoring checkout completion and site speed, and being ready to respond quickly to anything that surfaces once real traffic hits the new store. This phase is often underestimated, teams treat launch day as the finish line when it’s really the start of the highest-attention period.
A Realistic Example Timeline
To make the phase breakdown more concrete, here’s how it might play out for a mid-sized store, a 400-SKU homewares brand moving from Squarespace, with a customised (not fully custom) premium theme, standard shipping and accounting integrations, and no Shopify Plus requirement:
- Weeks 1-2: Discovery, data audit, URL mapping, and design direction sign-off
- Weeks 2-5: Theme customisation and store build, running alongside data migration and app setup
- Weeks 4-5: SEO redirect map finalised and cross-checked against the live site
- Week 6: Full QA pass, checkout, shipping calculations, redirects, forms
- Week 7: Launch, scheduled for a low-traffic day
- Weeks 7-10: Active post-launch monitoring, with daily Search Console checks tapering off after the first two weeks
That’s a realistic 7-week build-to-launch timeline with a further few weeks of close monitoring, roughly in the middle of the “small-to-mid-sized” range mentioned above. A simpler store with a stock theme could compress this to 4-5 weeks; a store adding an ERP integration or Shopify Plus requirements could easily push it to 10-14 weeks or beyond. The point of walking through a concrete example isn’t to set your expectation at exactly seven weeks, it’s to show how the phases stack and overlap in practice, rather than happening as one long sequential chain.
What Stretches the Timeline
- Large or complex product catalogues, thousands of SKUs, complex variant matrices, extensive metafields
- Custom or headless theme builds, genuinely bespoke design and functionality takes proportionally longer than working within a theme’s existing framework
- Complex integrations, ERP systems (NetSuite, Cin7), custom API work, multi-warehouse inventory logic
- Shopify Plus requirements, checkout customisation, multi-currency, B2B logic all add setup and testing time
- Content decisions made mid-project, changing your mind on design or structure partway through resets parts of the timeline
- Slow internal approvals, content sign-off, design feedback cycles, and stakeholder availability are common (and avoidable) sources of delay that have nothing to do with technical complexity
What Compresses the Timeline
- A genuinely thorough discovery phase that surfaces problems early rather than mid-build
- A clean, decluttered product catalogue before migration starts (archiving discontinued products, consolidating duplicates)
- Choosing a quality stock theme over a fully custom build, where your brand doesn’t strictly require bespoke design
- Clear, fast internal decision-making and content sign-off
- A dedicated team running data, design, and integrations in parallel rather than sequentially
Why “As Fast as Possible” Isn’t the Right Goal
It’s worth naming a trap merchants fall into when timeline becomes the main focus: optimising purely for speed tends to push corners to get cut in exactly the phases that protect you afterwards, SEO redirect mapping and QA testing. A migration that launches two weeks faster but skips proper redirect verification can easily cost far more than two weeks in lost organic traffic and emergency fixes once real problems surface. The better framing isn’t “how fast can this go” but “what’s the shortest timeline that still allows every phase to be done properly”, which is a genuinely different, and usually longer, number.
A Simple Planning Checklist
- [ ] Decide Shopify vs Shopify Plus before scoping design work
- [ ] Complete a full data and app audit before setting a launch date
- [ ] Choose stock theme vs custom build early, this is the biggest timeline lever
- [ ] Build the SEO redirect map in parallel with development, not after
- [ ] Schedule QA as a dedicated phase, not an afterthought
- [ ] Pick a low-traffic launch window
- [ ] Block out 2-4 weeks of active post-launch monitoring capacity
When to Bring in a Specialist
If your timeline is being driven by an external deadline, a lease ending on your old hosting, a sale event, a marketing campaign already scheduled, that’s exactly when an unrealistic, self-imposed timeline causes the most damage, because corners get cut under pressure. A properly scoped Shopify migration engagement gives you an honest timeline upfront based on your actual store, rather than a timeline set by hope.
Frequently Asked Questions
Can a Shopify migration be done in under two weeks?
For a genuinely small, simple store with a stock theme and minimal integrations, it’s possible, but it leaves very little room for proper QA and SEO work. Most merchants are better served treating anything under 4 weeks as a compressed, higher-risk timeline rather than a target to aim for.
Does migrating to Shopify Plus take longer than standard Shopify?
Generally yes, because Plus migrations more often involve custom checkout work, B2B configuration, and multi-currency setup, all of which add development and testing time beyond a standard Shopify build.
Can I keep my old store running while the new Shopify store is being built?
Yes, and this is the standard approach, your existing store stays live and unaffected while the new Shopify store is built and tested on a separate, unpublished domain, with cutover only happening once everything is verified.
What’s the biggest single cause of migration delays?
Rushed or skipped discovery. Problems that surface mid-build because they weren’t identified upfront, unexpected data complexity, an integration that needs custom work, a design decision nobody actually settled, cost far more time to resolve mid-project than they would have cost to catch in planning.
How soon after launch will I know if something’s wrong?
Most critical issues (broken checkout, missing redirects, integration failures) surface within the first 48-72 hours if you’re monitoring actively. SEO-related issues take longer to become visible, plan on watching rankings and organic traffic for at least 4-6 weeks post-launch.
Next Step
If you want a realistic timeline for your specific store rather than a general range, book a call and we’ll walk through your setup and give you an honest project plan.
