---
title: "Overview - Username availability checker"
description: "Check if your username is available on Instagram, TikTok, X, YouTube, GitHub, Pinterest, LinkedIn, and Threads simultaneously. No signup required."
url: "https://adaptlypost.com/free-tools/username-availability-checker"
---

# A practical overview - Username availability checker

Check if your desired username is available across 8 social platforms at once. Instagram, TikTok, X, YouTube, GitHub, Pinterest, LinkedIn, and Threads.

100% free, no account needed

## Interactive tool

### Enter Username

@

Select Platforms to Check

## Free Username Availability Checker Features

One username, 8 platforms checked instantly

### Instant Check

Click to open the profile URL: if it 404s, the username is available.

### Direct Links

One click opens the profile page on each platform to verify availability.

### 8 Platforms

Instagram, TikTok, X, YouTube, GitHub, Pinterest, LinkedIn, and Threads.

### Format Validation

Validates your username against each platform's specific rules before checking.

## FAQ

### How does the availability check work?

We generate the profile URL for each platform. Click 'Check Availability' to open it, if you see a 404 or 'user not found' page, the username is available.

### Why not check automatically?

Social platforms block automated username lookups. Manual checking via profile URLs is the most reliable method and avoids rate limits.

### Should I use the same username everywhere?

Ideally yes, consistent usernames make your brand easier to find across platforms. If your first choice is taken somewhere, try adding underscores or periods.

## Keep going with AdaptlyPost

[Schedule posts across every platform](https://adaptlypost.com/features/ai-social-media-scheduler)[Compare the best social media scheduling tools](https://adaptlypost.com/guides/best-social-media-scheduling-tools-2026)

## Claim Your Username

Secure your handle and start building your brand.

[Get Started Free](https://adaptlypost.com/signup)