Moving from BigCommerce to Shopify in 2026 means transferring your product catalog, customer accounts, and order history while keeping the URLs that already rank in Google intact.
- Migrating from BigCommerce to Shopify takes 2-4 weeks for catalogs under 5,000 SKUs if you plan a hard cutover date.
- Export BigCommerce product, customer, and order CSVs first; Shopify's native importer caps uploads at 15MB per file.
- 301 redirect mapping before launch is non-negotiable — skip it and rankings drop within 30 days of cutover.
- Store Importer moves WooCommerce data into Shopify, not BigCommerce exports — use Shopify's built-in importer or a BigCommerce-specific app for this move.
- DIY migration works fine under 2,000 products; above that, budget for a specialist or a paid migration app.
Why this matters
A BigCommerce-to-Shopify move touches three things Google and your customers both care about: product data, account continuity, and URL structure. Get the CSV mapping wrong and variants disappear. Skip redirects and a year of backlinks and rankings evaporate the day you flip DNS. BigCommerce and Shopify structure product and category data differently \u2014 BigCommerce uses SKU-level variant options while Shopify groups variants under a single parent product \u2014 so a straight CSV copy-paste rarely works cleanly on the first try.
Most stores that lose traffic after a platform migration lose it in the first 30 days, when old BigCommerce URLs return 404s instead of resolving to their new Shopify equivalents. That's a redirect mapping failure, not a Shopify problem, and it's fixable before launch if you build the map early.
What you'll need
- Admin access to your BigCommerce store (Store Owner or full permissions role)
- A Shopify store on a plan that supports your current product count and app needs
- Exported CSVs of products, customers, and order history from BigCommerce's control panel
- A spreadsheet tool (Excel or Google Sheets) for cleaning and remapping columns
- A list of every indexed BigCommerce URL, pulled from Google Search Console or a crawler
- 2-4 weeks of lead time before your planned cutover date
- A migration checklist to track what's done and what's still open
The steps
1. Audit and export your BigCommerce catalog
Pull your full product export from BigCommerce's admin panel under Products, including variants, images, and custom fields. Export customers and order history as separate CSVs \u2014 BigCommerce splits these into different files by default.
This step matters because whatever isn't in the export doesn't make it to Shopify automatically. Check the row count against your live catalog count in BigCommerce before moving on. Common mistake: exporting only "active" products and leaving draft or out-of-stock items behind, which then vanish from search once the old store goes dark.
2. Map and clean your CSV data
Shopify expects specific column headers (Handle, Title, Variant SKU, Variant Price, and so on) that don't match BigCommerce's export format. Rebuild your CSV with Shopify's template columns and paste your BigCommerce data into the matching fields.
This is where most manual migrations go wrong. BigCommerce stores variant options (size, color) as separate attributes; Shopify needs them consolidated as Option1/Option2/Option3 values under one product handle. Common mistake: letting each variant import as its own separate product instead of one product with multiple variants \u2014 this doubles your catalog count and breaks variant-level URLs.
3. Set up your Shopify store foundation
Before importing anything, configure your Shopify theme, tax settings, shipping zones, and payment gateway. Install the apps you'll need for reviews, subscriptions, or loyalty \u2014 whatever ran on BigCommerce needs a Shopify equivalent.
Doing this before the data import means you're testing against a store that already looks and behaves like your final version, not a bare-bones shell. Common mistake: importing products first, then discovering your chosen theme handles collections differently and needing to re-tag everything.
4. Import products, customers, and orders into Shopify
Upload your cleaned CSVs through Shopify admin under Products > Import, then Customers > Import. Shopify's native importer caps files at 15MB per upload, so large catalogs may need to be split into batches.
Order history is the tricky part \u2014 Shopify's CSV importer doesn't natively support historical order imports the way it does products and customers. You'll typically need a dedicated migration app or manual entry for orders you want preserved as records. Common mistake: assuming order history imports the same way products do and finding out post-launch that it didn't.
5. Build your 301 redirect map before going live
List every indexed BigCommerce URL next to its new Shopify equivalent in a spreadsheet, then upload the redirect pairs through Shopify's URL Redirects tool under Navigation. This has to happen before DNS cutover, not after.
The mechanics of 301 mapping are the same regardless of which platform you're leaving \u2014 the WooCommerce-to-Shopify redirect setup guide walks through the same pairing logic you'll apply to BigCommerce URLs. Common mistake: redirecting category pages but forgetting individual product URLs, which usually make up 70-80% of a catalog's indexed pages.
6. Test checkout, apps, and integrations in a staging window
Place test orders, check that shipping rates calculate correctly, and confirm every app you installed in step 3 fires as expected. Test on both desktop and mobile before announcing anything to customers.
A staging test catches the integration failures that a CSV import can't \u2014 payment gateway mismatches, broken app scripts, and shipping rate errors that only show up at checkout. Common mistake: testing only the homepage and a couple of product pages instead of running a full purchase from cart to confirmation.
7. Cut over DNS and monitor rankings post-launch
Point your domain's DNS to Shopify once testing passes, then submit your new Shopify sitemap to Google Search Console immediately. Watch Search Console's Coverage report daily for the first two weeks for crawl errors or 404 spikes.
This is the step where redirect gaps show up as real ranking losses if step 5 was incomplete. Common mistake: cutting over on a Friday afternoon with no one watching Search Console over the weekend.
Also running a WooCommerce store?
Store Importer moves WooCommerce products, customers, and orders to Shopify with a one-time payment.
Troubleshooting
- Variants split into duplicate products \u2014 recheck your CSV Handle column; every variant of one product needs the identical Handle value to group under one listing.
- Customer passwords don't carry over \u2014 this is expected. Shopify triggers a password reset email to imported customers on their first login attempt.
- Order history won't import via CSV \u2014 use a dedicated migration app for historical orders, or accept that only new orders post-launch will live natively in Shopify.
- 404s spike after cutover \u2014 pull a fresh crawl of your old BigCommerce URLs and cross-check against your redirect map; missed product or blog URLs are the usual gap.
- Metafields and custom fields don't map \u2014 BigCommerce custom fields need to be manually mapped to Shopify metafields; there's no automatic 1:1 match.
- SEO titles and meta descriptions reset to defaults \u2014 these live in separate columns in Shopify's CSV template and are often skipped during the first import pass.
Tools and resources
- Shopify's native CSV importer (Products > Import) for catalog and customer data
- Shopify's URL Redirects tool (Navigation > URL Redirects) for 301 mapping
- Google Search Console for pre- and post-migration crawl monitoring
- A migration checklist to track every step above
- Store Importer, for merchants who also run a WooCommerce store they want consolidated into the same Shopify account
What to do next
Once your BigCommerce catalog is live on Shopify, the harder part is protecting the SEO equity you built on the old platform. The full data migration guide covers what happens after cutover \u2014 sitemap resubmission, backlink audits, and the 90-day window Google typically needs to fully re-crawl a migrated domain.
FAQ
How long does it take to migrate from BigCommerce to Shopify?
Most stores under 5,000 SKUs complete a BigCommerce to Shopify migration in 2-4 weeks in 2026, including CSV cleanup, redirect mapping, and staging tests. Larger catalogs with heavy customization take 6-8 weeks.
Will I lose my SEO rankings when I migrate from BigCommerce to Shopify?
You'll lose rankings only if you skip 301 redirects from old BigCommerce URLs to their new Shopify equivalents. With a complete redirect map submitted before cutover, most sites recover full ranking within 60-90 days.
Does Shopify import BigCommerce order history automatically?
No, Shopify's native CSV importer doesn't support bulk historical order imports the way it does products and customers in 2026. You'll need a dedicated migration app or manual entry to preserve past order records.
Can Store Importer migrate my BigCommerce store to Shopify?
Store Importer is built for WooCommerce-to-Shopify migrations, not BigCommerce. BigCommerce merchants should use Shopify's native CSV importer or a BigCommerce-specific migration app instead.
What's the biggest risk when moving from BigCommerce to Shopify?
Broken 301 redirects are the biggest risk — missed product and category URLs turn into 404s that cost both rankings and direct customer bookmarks. Build your redirect map before, not after, DNS cutover.
Do customer passwords transfer from BigCommerce to Shopify?
No, passwords never transfer between platforms for security reasons. Shopify sends a password reset email to each imported customer the first time they try to log in.
How much does it cost to migrate from BigCommerce to Shopify?
Costs vary by catalog size and whether you hire a specialist or handle CSV mapping yourself. A DIY migration under 2,000 products mainly costs your time; larger or highly customized catalogs typically justify a paid migration app or agency.
Should I migrate my BigCommerce store myself or hire someone?
DIY migration works well for catalogs under 2,000 products with standard variant structures. Above that, or with heavy metafield customization, a specialist or migration app saves more time than it costs.
One last thing
The redirect map, not the product import, is where most BigCommerce-to-Shopify migrations actually fail in 2026 \u2014 the CSV work is tedious but mechanical, while a missed URL pattern (like BigCommerce's /category-name/product-name structure versus Shopify's /products/product-name) can silently 404 hundreds of pages at once. Crawl your old site before you touch a single CSV, not after.
