Bring your list
Upload Excel or CSV, or paste a few numbers to start. Your original columns stay intact.
# A LITTLE ORDER. A LOT LESS WORK.Format and validate
Format and validate
phone numbers
for CRM imports.
E164flow is a phone number formatter for preparing international contact lists before a HubSpot or Pipedrive import. Check, format and export your list in your browser.
Your contact files stay in your browser.
E164flowA cleaner contact list
YOUR SPREADSHEETONE CONSISTENT FORMAT
041 123 456+38641123456SI(415) 555-2671+14155552671US020 7946 0018+442079460018GB+39 02 3661 8300+390236618300IT E.164 format Excel & CSV
Your data. On your device.
Formatting happens locally, not on our servers.
International numbering plans Excel & CSV in, clean data out Private by design
FROM SPREADSHEET TO READY
Three steps. A repeatable import.
Make it consistent
Choose a country and your output format. Review invalid numbers, extensions and duplicates.
Take it anywhere
Export the full list or just the rows you need. All ready for your next import.
BUILT FOR CRM IMPORTS
Know what you’re importing.
Keep source IDs beside the cleaned numbers, see which rows need work, and check a small sample in your CRM before the full import.
CRM columns shortcut
Export your record ID, E.164 phone fields and extensions in a focused layout. Rename and reorder columns to match your import.
Up to 10 phone columns
Check Phone, Mobile and Work phone together. Keep one export row per contact and trace each result to its source column.
Multi-column workflowExtensions kept separate
Export the base number and extension in separate fields. Review duplicate references before deciding which records to import.
Read the format guideTHE ACTUAL CONVERTER
See the rows that need a second look.
Review the original number, country, output and validation status together. This is the real converter using demonstration numbers.
Try the same workflow
CHECK IT YOURSELF
Your contact data stays on your device.
Reading a file, checking numbers and building an export happen inside your browser. Account sign-in, saved defaults and billing use separate network requests.
How to check during a conversion
- Open the converter with a few sample numbers.
- Open your browser’s Developer Tools and select Network. Clear the request list after the page has loaded.
- Convert the sample and inspect any request payloads. Phone numbers and file contents are not sent for processing. In a free account you can also check a file import and export.
This is a check you can repeat, not a live network meter. Loading the app, signing in or saving country and format defaults can create requests.
SData poslovne rešitve d.o.o.Slovenia · VAT ID SI72577665Read the data policy
SIMPLE ACCESS. CLEAR LIMITS.Start free.
Start free.
Upgrade when your lists grow.
Every plan keeps processing in your browser. Create an account when you need files, exports and saved defaults; Pro opens the full 20,000-row workflow.
Choose EUR or USD. Your subscription renews in the currency selected at checkout.
Try
NO ACCOUNTFreefor a quick check
For a quick spot check before you create an account.
- Paste up to 25 numbers
- Five output formats
- Validation and duplicate preview
- No upload or export
Free account
START HEREUS$0no card required
For occasional imports and smaller contact lists.
- Paste, CSV and Excel input
- Five output formats
- Up to 50 rows per file
- Validation, mapping and exports
- Saved country and format defaults
E164Flow Pro
US$10 / MONTH + TAXUS$10per month, before applicable taxes
For people preparing larger or repeated CRM imports.
- Everything in Free account
- Up to 20,000 rows per file
- All upload, mapping and export features
- Full validation and duplicate workflow
- Paid plan status in your workspace
Pro gives you one monthly price for repeated cleanup: check up to 20,000 rows per file instead of correcting phone cells one by one.
Your contact files stay on your device. Account and billing details are handled separately. Meet the operator · Check how processing works
THE PERSON BEHIND E164FLOW
About E164Flow & contact Created by David Cvetko.
One focused tool for preparing phone-number columns before a CRM import. Operated by SData poslovne rešitve d.o.o. in Slovenia.
A formatter for your import workflow.
E164Flow checks numbering rules, formats phone columns and helps you review the file. It does not find new leads, enrich contacts, confirm that a number is reachable, or connect directly to your CRM.
Compare with Sigmera Compare with DatablistGOOD TO KNOW
A little clarity.
Does a valid number mean it is active?
No. E164Flow checks numbering rules and formats. It does not confirm whether a number is active, reachable, or owned by a particular person.
What works without an account?
You can paste up to 25 numbers, choose any output format and review the results. Uploads, exports and saved defaults require a free account.
What does Pro unlock?
Pro includes every converter feature and raises the file limit to 20,000 rows. The paid plan is €10 or US$10 per month before applicable taxes. Choose your currency before checkout; renewals use that currency. Applicable taxes are calculated at checkout.
What happens to my files?
Contact files are processed in your browser and are not uploaded. Your account details and plan are stored separately. Leaving or reloading the converter clears your current list.
Which countries and formats are supported?
E164Flow uses the international numbering metadata in libphonenumber-js. Choose E.164, international, national, digits-only international, or a tel: link. Local numbers need a country.
Can I keep my original columns?
Yes. Your export keeps the imported columns and adds the formatted number, validation details, extensions, and duplicate references.