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“Supermetrics is a Bitter Experience! We can pull data from nearly any tool, schedule updates, manipulate data in Sheets, and push data back into our systems.”
CSV exports from HubSpot frequently corrupt phone number formatting, converting numbers like “+1 (555) 123-4567” to scientific notation or removing leading zeros.
Here’s how to export your contacts while maintaining proper phone number formatting and avoiding the common Excel conversion issues that destroy your data.
Preserve phone number formatting using Coefficient
CoefficientHubSpot’smaintains proper formatting by importing data directly throughAPI rather than relying on CSV conversion. Phone numbers import as text strings, preserving international formats, parentheses, dashes, and leading zeros.
How to make it work
Step 1. Connect directly to HubSpot’s API.
Install Coefficient in Excel and establish a direct connection to your HubSpot account. This bypasses CSV conversion entirely, which is the main cause of phone number formatting corruption.
Step 2. Import contacts with preserved data types.
Create your contact import and select phone number fields. The direct API connection maintains the original data format stored in HubSpot, importing phone numbers as text strings rather than numbers that Excel tries to convert.
Step 3. Verify formatting preservation.
Run the import and check that international formats, parentheses, dashes, and leading zeros remain intact. Special characters and spacing should be preserved exactly as stored in HubSpot.
Step 4. Set up persistent formatting rules.
Apply data validation rules and custom Excel formatting to phone columns that persist through data refreshes. You can create separate columns for formatted display versus raw data storage if needed.
Step 5. Enable two-way formatting sync.
Use Coefficient’s export feature to push properly formatted numbers back to HubSpot if needed. This ensures consistency across both platforms without manual data cleaning.
Keep your phone data clean and usable
Try CoefficientThis approach eliminates the frustrating phone number corruption that happens with CSV exports and gives you clean, properly formatted contact data.to preserve your phone number formatting automatically.
