Free UTM Builder

Create trackable campaign URLs with UTM parameters — perfect for Google Analytics.

Enter your base URL, pick a source, medium, and campaign name, then copy the generated link. UTM parameters let you see exactly where your traffic comes from in any analytics platform.

Enter a base URL and required UTM parameters to generate your campaign link

How to Use This UTM Builder

  1. 1. Enter your destination URL — Paste the full URL of the page you want to drive traffic to. This is the landing page users will see after clicking your campaign link. The tool validates the URL format automatically and alerts you if it detects issues such as missing protocols or malformed query strings.
  2. 2. Fill in the required UTM parameters — Add values for utm_source (where the traffic originates, such as "newsletter" or "facebook"), utm_medium (the marketing channel, like "email" or "cpc"), and utm_campaign (the campaign name, such as "spring_sale_2026"). These three fields are the minimum Google Analytics needs to attribute traffic correctly.
  3. 3. Add optional parameters for deeper tracking — Use utm_term to track paid search keywords and utm_content to differentiate between multiple links in the same campaign — for example, "header_cta" versus "footer_cta." These optional fields give you granular data when analyzing which creatives and placements perform best.
  4. 4. Copy the generated URL — The final UTM-tagged URL appears instantly as you type. Click the copy button to grab it, then paste it into your ad platform, email campaign, social post, or QR code generator. The tool is completely free with no sign-up — generate as many campaign URLs as you need.

Why Use Our UTM Builder?

Free forever, no account required — Our UTM builder costs nothing and never asks for your email or credit card. There are no usage limits, no premium features behind a paywall, and no ads cluttering the interface. Just open the page and start building trackable campaign links in seconds.

Prevent tracking errors before they happen — The tool validates your base URL, warns you about duplicate parameters, and enforces consistent lowercase formatting to prevent analytics fragmentation. Catching these mistakes upfront means cleaner data in Google Analytics, Mixpanel, or whichever platform you use.

Works with every analytics platform — UTM parameters are a universal standard recognized by Google Analytics (GA4 and Universal Analytics), Adobe Analytics, Matomo, Mixpanel, HubSpot, and virtually every other marketing analytics tool. A link built here works everywhere without modification.

Frequently Asked Questions

What are UTM parameters?

UTM (Urchin Tracking Module) parameters are tags appended to the end of a URL that tell your analytics platform where traffic came from and which campaign drove it. The five standard parameters are utm_source, utm_medium, utm_campaign, utm_term, and utm_content. When a user clicks a UTM-tagged link, the analytics tool reads these values and attributes the visit to the correct campaign, source, and medium in your reports.

Is this UTM builder really free?

Yes, completely. There is no sign-up, no premium tier, and no limit on how many URLs you can generate. The tool runs in your browser and does not store your data on any server. It is maintained as part of the free OneToTwenty toolset.

Do UTM parameters work with GA4?

Absolutely. Google Analytics 4 (GA4) fully supports UTM parameters. When a user arrives on your site via a UTM-tagged link, GA4 automatically populates the Source, Medium, and Campaign dimensions in the Traffic Acquisition report. No additional configuration is needed on the GA4 side — just make sure your UTM values are consistent so your data stays clean.

Should UTM values be lowercase?

Yes, it is a best practice to keep all UTM values in lowercase because most analytics platforms treat "Email" and "email" as separate entries. Our builder automatically converts values to lowercase to help you maintain consistent, accurate reporting across campaigns.

Can I use UTM parameters on internal links?

It is generally not recommended. UTM parameters are designed for external traffic sources. Using them on internal links (for example, from one page of your site to another) can overwrite the original referral source in your analytics data, making it appear that a session started from your own site rather than the actual external source. For internal campaign tracking, use event parameters or custom dimensions instead.

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