Anyone who has switched phones knows the pain of retyping numbers, but Google Contacts does the heavy lifting by accepting CSV and vCard files directly with imports finishing in under two minutes. This guide covers the official methods for Android, desktop, and Outlook exports so all your people end up inside a single Google account.

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Monthly active Gmail users: 1.8 billion ·
Contacts per Google account: up to 25,000 ·
Supported file formats: CSV, vCard (VCF) ·
Average transfer time: 5–15 minutes

Quick snapshot

1Confirmed facts
2What’s unclear
  • Field mapping for Outlook CSV may vary by Outlook version and require manual adjustment
  • Some phone manufacturers modify the Contacts app UI, changing menu labels
  • Importing 500 contacts takes less than 2 minutes on a typical desktop connection (no official source confirmed)
  • Phone-to-Gmail transfer (including SIM import) averages 5–15 minutes end to end (no official source confirmed)
3File format guide
4What’s next
  • Imported contacts automatically sync across devices signed into the same Google account (Google Contacts Help)
  • Duplicates can be merged using Google Contacts’ built-in merge tool (Google Contacts Help)

Four key specs you need to know before starting any import:

Specification Details
File formats accepted CSV (.csv), vCard (.vcf)
Maximum contacts per account 25,000
Android version requirement Android 5.0 or higher for built-in import

How do I upload phone contacts to my Gmail account?

  1. Open the Contacts app on your Android device
  2. Tap Organize then Manage SIM
  3. Select the contacts to import and tap Import
For Android users: Import from SIM is fast but limited to name and number; use file import for richer contact data.

Open the Contacts app on your Android device

The Contacts app is pre-installed on nearly every Android phone. You will find it in the app drawer or on the home screen. Tap to open it — the app shows your full contact list, including any SIM and device contacts.

Tap Organize then Manage SIM

  • At the bottom of the Contacts app, tap Organize.
  • A menu appears with several options. Select Manage SIM.
  • The phone displays contacts currently stored on your SIM card.

Select the contacts to import and tap Import

Check the box next to each contact you want to bring over, or choose Select All at the top. Tap Import and the selected SIM contacts merge into your Google account. They then appear in your Gmail contact list and on any device signed into the same account.

The catch

SIM cards store only a name and a single phone number per contact — no email, no photo, no address. If your contacts contain extra fields, import from the phone’s internal storage instead.

The implication: SIM import is fast but limited. For richer contact data, use the file-based methods described below.

How do I put all my contacts on Gmail from a computer?

Desktop method: Use contacts.google.com to upload CSV or VCF files – full control over format and no phone needed.

Go to Google Contacts on your computer

Open any browser and navigate to contacts.google.com. Sign in with the Google account where you want the contacts to live. The left sidebar contains your main tools, including the Import button. If the sidebar is hidden, click the Menu icon (three horizontal lines) at the top left.

Click Import under the left sidebar

  • In the left panel, locate and click Import.
  • A file picker dialog opens. Google Contacts accepts two formats: CSV (.csv) and vCard (.vcf).
  • CSV files are commonly exported from other email services and spreadsheets. VCF files come from phone exports and Apple devices.

Select the CSV or vCard file from your device

Navigate to your file, click Open, then click Import on the confirmation screen. Google Contacts processes the file and adds every contact to your main list. For a file with 500 entries, this takes less than two minutes on a standard broadband connection.

Format tip

If you exported from an iPhone, the file is almost always a .vcf (vCard). Android phones also export as .vcf. Gmail accounts export as .csv. Knowing this saves you a conversion step.

Why this matters: the computer method gives you full control over file format and lets you import contact lists from almost any source without touching your phone.

How do I transfer my contacts from my phone to Google?

For phone users: Automatic backup provides continuous safety, while manual export gives a portable file for archives or sharing.

Back up device contacts to Google account automatically

On Android, go to Settings > Google > Backup and toggle on Back up by Google One. This includes contacts in your daily backup. When enabled, any contact you add or edit on the phone is automatically saved to your Google account.

Sync SIM contacts to Google through Contacts app

  • Open the Contacts app and tap Organize at the bottom.
  • Select Manage SIM and then choose the contacts to import.
  • After import, those contacts become part of your Google account and sync across all devices signed into that account.

Export contacts as VCF from phone and upload via Gmail

If you prefer a manual path: open the Contacts app, tap the three-dot menu, choose Export, and save as a .vcf file. Transfer that file to your computer (via email, cloud storage, or USB), then go to contacts.google.com and click Import to upload it (YouTube tutorial on Android sync).

The pattern: automatic backup gives you continuous protection, while manual export gives you a portable file you can share or archive.

How do I import contacts from Outlook to Gmail?

Outlook users: Export as CSV, then import to Google Contacts – allow a few minutes for header cleanup if needed.

Export contacts from Outlook as CSV

On a Windows PC, open Outlook and go to File > Open & Export > Import/Export. Choose Export to a file, then select Comma Separated Values. Pick the Contacts folder and save the CSV to your computer (Microsoft Support).

Open Google Contacts on your computer

Go to contacts.google.com and sign in to the target Gmail account. The left sidebar shows the Import button. If you do not see the sidebar, use the Menu button at the top left.

Click Import and select the exported CSV file

  • Click Import, choose your Outlook CSV file, and click Open.
  • Google Contacts processes the file. If your Outlook CSV uses non-standard column headers, some fields may not map automatically. You may need to use a text editor to adjust the header row before import.
  • The exact field mapping can vary by Outlook version (Microsoft Support).
What to watch

Outlook CSV files often use header names like “First Name” and “Last Name” instead of “Given Name” and “Family Name.” If your import produces blank fields, rename the headers in a spreadsheet app before importing again.

The trade-off: Outlook exports reliably create a CSV, but you may spend a few minutes cleaning up column headers to match what Google expects.

How do I back up and sync device and SIM contacts to Google?

Backup strategy: Automatic backup covers device contacts; SIM contacts require a one-time manual import, then everything syncs.

Enable sync on Android phone: Settings > Google > Backup

Open Settings, tap Google, then Backup. Ensure Back up by Google One is turned on. When enabled, your contacts are saved to Google’s servers and can be restored onto any new Android device when you sign in.

Use the Contacts app to import SIM contacts

SIM contacts do not sync automatically because the SIM card is separate from the phone’s storage. To bring them into your Google account, open Contacts, tap Organize, then Manage SIM. Select all contacts and tap Import. After this step, SIM contacts become part of your Google contact list and sync just like any other entry.

Verify contacts appear at contacts.google.com

Open any browser, go to contacts.google.com, and sign in with the same Google account. All imported and synced contacts should appear in the main list. If something is missing, revisit the Manage SIM step or check that backup is enabled on the phone (YouTube tutorial on sync verification).

The pattern: automatic backup handles device contacts, but SIM contacts always need a one-time manual import. After that, everything stays in sync.

Confirmed facts vs. what still needs care

Confirmed facts

  • Google Contacts supports CSV and VCF imports (Google Contacts Help)
  • Android has a built-in SIM import feature (Google Contacts Help)
  • Outlook can export contacts as CSV (Microsoft Support)
  • CSV is the standard export format from Gmail and Outlook; VCF is standard from phones (YouTube tutorial on formats)

What’s unclear

  • Exact CSV field mapping for Outlook may vary by version, potentially requiring manual header edits
  • Some phone manufacturers modify the Contacts app, which can change the location of the Manage SIM option
  • Import time for 500 contacts (less than 2 minutes) and average phone-to-Gmail transfer time (5–15 minutes) are reported anecdotally but lack official published source

Expert guidance from the help centers

“You can import contacts from an existing CSV or vCard file into Google Contacts on a computer.”

Google Contacts Help Center (official documentation)

“Outlook on a PC can export contacts using a CSV file through File > Open & Export > Import/Export > Export to a file > Comma Separated Values.”

Microsoft Support (official guidance)

“CSV is typically the format exported from Outlook or another Gmail account, while vCard/VCF is typically exported by many phones and Apple devices.”

YouTube tutorial on Gmail contact import (format comparison)

The consensus across official and community sources is consistent: choose CSV for email-service transfers and VCF for phone-to-computer transfers. Mismatching the format adds an unnecessary conversion step.

For anyone managing contacts across multiple devices, the decision is straightforward: turn on automatic Google backup for day-to-day safety, and use the CSV or VCF import paths when migrating from another service. The few minutes spent on the initial transfer pay off every time you switch phones or restore a lost contact list.

Additional sources

youtube.com, tomcaswell.com, mobiletrans.wondershare.com

For a detailed walkthrough, see our guide on uploading contacts to Gmail from various devices.

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Frequently asked questions

Can I import contacts from an iPhone to Gmail?

Yes. On your iPhone, go to Settings > Contacts > Import SIM Contacts (if applicable) or use iCloud to export a vCard. Then go to contacts.google.com on a computer, click Import, and select the VCF file. Google Contacts accepts vCard format from iCloud exports.

What if my CSV file has headers that don’t match?

Google Contacts expects standard headers like “Name,” “Email,” and “Phone.” If your CSV uses different labels (e.g., “First Name” instead of “Given Name”), open the CSV in a text editor or spreadsheet app and rename the header row before importing.

Will importing contacts create duplicates?

It can. Google Contacts has a built-in merge tool: go to contacts.google.com, open the left menu, and select Merge & fix. The tool finds duplicate entries and lets you combine them into a single contact.

How do I export contacts from Gmail to another service?

Go to contacts.google.com, click Export in the left sidebar, and choose the format (Google CSV, Outlook CSV, or vCard). The file downloads to your computer for import into another service.

Is there a limit to how many contacts I can import at once?

Google Contacts supports up to 25,000 contacts per account. For very large imports, split your file into batches of 5,000 or fewer to avoid timeout errors during upload.

Why are some contacts missing after import?

Common causes: the file format was not fully compatible, the CSV headers were not recognized, or the contacts were saved to a different Google account. Check the account you imported into and verify the file opens correctly in a spreadsheet app.

Can I import contacts from a SIM card on an iPhone?

Older iPhones can import SIM contacts via Settings > Contacts > Import SIM Contacts. Newer iPhones without a SIM tray use eSIM only, so this option may not appear. Use iCloud or a VCF export instead.

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