A Shopify migration typically runs 5-7 days for small catalogs (under 200 SKUs), 1-3 weeks for mid-size catalogs (200-1,000 SKUs), and 3-8 weeks for large or genuinely complex stores (1,000+ SKUs, B2B pricing, heavy custom functionality). The timeline mostly comes down to catalog size, data complexity, and how much custom functionality needs rebuilding. Amwhiz completes standard migrations, SEO redirects and full testing included, in 7 days for a flat rate.
Every "how long will this take" question hides variables you can't see from the outside: how clean your existing product data actually is, how many custom features your current store has that need rebuilding, how much testing a safe go-live requires. Two stores that look similar in size from the outside can end up with wildly different migration timelines once you get into the details.
Realistic timeline: 5-7 days
Product data, images, and basic collections move quickly. Theme setup and app configuration are where most of the time actually goes, along with thorough testing before anything launches. This is the tier where Amwhiz's standard 7-day turnaround applies.
Realistic timeline: 1-3 weeks
More time goes into data validation here, making sure variants, pricing, and inventory data all map correctly at scale, plus more extensive redirect mapping to keep SEO intact.
Realistic timeline: 3-8 weeks
Complex B2B pricing structures, extensive custom functionality, or huge catalogs with detailed variant structures all need considerably more data mapping, custom rebuild work, and testing time.
Before anything moves to Shopify, existing data usually needs a cleanup pass first. Duplicate products, inconsistent categorization, missing images, all of this should get sorted rather than migrated straight into the new platform along with everything else.
Rebuilding, or upgrading, your look and feel on a Shopify theme. This moves fast with a proven, customizable theme foundation, and slowly if you're starting completely from scratch.
Finding and configuring Shopify equivalents for whatever plugins ran your old store's reviews, search, upsells, or loyalty program.
Building and testing 301 redirects for every existing URL. Critical for protecting search rankings, and genuinely time-consuming once you're dealing with real scale.
Checkout flow, payment gateways, shipping rules, tax settings, mobile responsiveness, all of it needs verification. This step should never get rushed, no matter how much timeline pressure is building.
Days 1-2: Data export, cleanup, and import into Shopify, product data, images, customer records.
Days 3-4: Theme customization, getting your branding and structure onto the new store.
Day 5: App integration and configuration, reviews, email marketing, upsells.
Day 6: SEO redirect mapping and implementation, plus payment and shipping configuration.
Day 7: Full testing, checkout flow, mobile responsiveness, page speed, one final review before go-live.
That's the actual structure behind Amwhiz's 7-day standard migration timeline for typical catalog sizes.
A fast timeline only works when it comes from an efficient, well-practiced process, not from skipping steps to hit a number. Migrations rushed without proper testing or redirect mapping tend to end in broken checkout flows, lost SEO rankings, or missing product data that nobody notices until customers start complaining. Speed and thoroughness aren't actually at odds, but only when the process behind them is genuinely efficient, not just cutting corners and calling it fast.
When you're comparing migration timelines across providers, a suspiciously short quote, say, 2-3 days for a mid-size catalog, is often a sign that testing or redirect mapping got compressed or skipped entirely, not that someone found genuine efficiency. Ask directly what's happening inside that fast timeline: is there an actual dedicated day for testing checkout and mobile responsiveness, or does launch happen the moment the data import finishes? A realistic, efficient timeline still sets aside real time for verification. It's just structured to skip the delays, unclear scope, slow internal reviews, unresponsive communication, that stretch traditional agency timelines out to months.
If you've got staff who touch your store day to day, customer service, marketing, order fulfillment, loop them in on the migration timeline before it starts. A clear internal understanding of when the cutover happens, and a short freeze on major catalog or pricing changes during the migration window, avoids the common headache of data getting updated in the old system after the export has already been taken.
It's possible with very clean existing data and minimal custom functionality, but realistically, large or complex catalogs need more time for proper data validation and testing.
Not when the speed comes from an efficient, standardized process rather than skipped testing or redirect mapping. That's the distinction worth verifying with any provider you're talking to.
SEO redirect mapping and thorough pre-launch testing are usually the biggest time costs for stores that already have clean product data going in.
For catalogs under roughly 200 SKUs without genuinely complex custom functionality, yes. Amwhiz scopes larger or more complicated projects individually instead of forcing them into a timeline that wouldn't leave room for proper testing.
It's smart to hold off launching major new campaigns during the migration window itself, but existing campaigns can usually keep running, since your current store stays live until the tested cutover happens.
A quote with no clear time set aside for testing, or one that's noticeably faster than comparable quotes with no explanation of why, both deserve a direct question before you sign anything.
Amwhiz completes standard Shopify migrations, SEO redirects and full testing included, in 7 days for a flat rate. Reach out and get a realistic timeline for your specific catalog.