Joist gives you your clients and your items as CSV files.
Your clients and your item list come out of Joist as whole lists. Your estimates and invoices come out too, but only as a summary, one month at a time.
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What it costs
The cost is knowing what comes out whole. Clients and items do. Estimates and invoices come out without their line items.
What owners do today
Your clients, items, estimates and invoices sit in Joist, and clients and items export as whole CSV files.
Your clients
- Sign in to Joist on the web at pro.joistapp.com.
- Open Clients.
- Click the three dots at the top right, then Export.
- You get a CSV file of your whole client list.
Your items
- Open Items.
- Click the three dots at the top right, then Export.
- You get a CSV file of your whole item list.
Your estimates and invoices
- Open Estimates or Invoices.
- Click the grey Export button.
- Pick one month. Joist exports one month at a time, so a year of invoices is twelve files.
Nothing needs converting. Joist's help pages describe both exports as CSV files.
Joist's estimate and invoice file is a summary, not the full documents. Each row has the Estimate or Invoice #, Client Name, Subtotal, Tax, Total, Date Issued, Date Created and Payment Received Less Refunds.
The line items on each estimate and invoice are not in Joist's file. Keep a copy of any estimate or invoice you need in full before you cancel.
Start with the clients file. Your items file is worth opening to check it carries your prices.
Steps from Joist Help Center: exporting clients and items, and Joist Help Center: exporting estimates and invoices, read October 29, 2026. Menus change; if yours looks different, follow Joist's page.
Preview your Joist customers, right here
Drop your Joist customer CSV here
or
Try it with a sample file.
Not ready to export yet? Try the preview with a sample file. No file of yours is needed.
The preview reads your file in your browser, on this page. The page does not upload it or send it anywhere. To check, open your browser's developer tools, go to the Network tab, and drop the file: you should see no request carrying it. We ran that check with an automated browser on the build of November 10, 2026. We have not run it on the live site, or with browser extensions you may have added.
CSV only, up to 5 MB. The first row should name the columns.
The preview is a look at your file, not the import. When you import in CONSTRUKTR, you check the preview there, and nothing is saved until you confirm.
CONSTRUKTR does not connect to your old software and pull your customers across. You export a file, then drop it in.
Import from a spreadsheet export Pro and up
Export your clients and your items from Joist as two CSV files.
Drop the clients file in first, then the items file as your price book if it carries your prices.
Import: drop the files you exported from Joist Check each preview in turn, and confirm only the ones you want saved.
Questions owners ask
Will the line items on my Joist estimates and invoices come across?
No. Joist's help page says its estimate and invoice export has the number, client name, subtotal, tax, total, the dates and the payment received, with no line items. Keep a copy of any estimate or invoice you need in full before you cancel.
Can I keep the prices I built up in Joist?
If your Items export carries your prices, yes: Joist's Items export is a CSV file of your whole item list. Open it and check before you cancel. Price book import is on Pro and Business, and in every free trial: drop the file into CONSTRUKTR's import, and check it before anything is imported.
Do I have to change Joist's clients or items files before I import them?
No. Drop the files into CONSTRUKTR's import as Joist gives them, customers first, then your price book. You can add several at once, or a zip of them. Nothing is imported until you check it and press Import.
See it on your own jobs.
Check your Joist prices in the 30 days free. No card.
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