You can easily export your data from Freshsales by taking the following steps:
Step 1: Click the Reports icon on your left panel.
Step 2: Choose the category of reports (Leads, Contacts, Accounts or Deals) you like to use. A list of reports under that category is displayed.
Step 3: Click the report that you like to export.
Step 4: If you want to export the data generated by the report right away, click Export as CSV.
Step 5: After you've saved the report, click Export as CSV.
Step 6: An email with a link to download the CSV file would be sent once the export is complete. Alternatively, you can click the download link from a flash notification that appears in your Freshsales account once the export is done.
Import to Nimble
Click your avatar in the top right hand corner
Choose Networks & Imports
From here, use the Import Wizard to upload your file.
For more information about this feature, please take a look at the following: