Free SEO tool

UTM Link Builder

Enter your URL with a source and medium, plus optional campaign details. The tool returns a tagged link ready for tracking in Google Analytics.

By iToolsLab Editorial TeamUpdated 14 October 2026How we build tools

What is utm link builder?

UTM parameters are small tags added to a link so analytics can show where visitors came from. Without them, traffic from emails and some apps can appear as direct.

The tool lowercases values and replaces spaces with underscores, so your reports stay consistent.

How to use the utm link builder

  1. Paste your page URL.
  2. Fill in source, medium and campaign.
  3. Press Calculate and use the tagged link in your post or email.

How the utm link builder works

Each field becomes a utm parameter, encoded and appended after a question mark or ampersand. Any hash anchor stays at the end.

Worked example

https://example.com/offer/ with source newsletter, medium email and campaign spring_sale becomes a link ending in utm_source=newsletter&utm_medium=email&utm_campaign=spring_sale.

Common uses of the utm link builder

  • Tracking which newsletter, ad or social post brings visitors.
  • Comparing campaigns in Google Analytics.
  • Giving partners and affiliates their own trackable links.
  • Separating organic from paid traffic from the same platform.
  • Keeping naming consistent across a team.

Tips and common mistakes

Use one naming style across your team. Mixed spellings split your data.

Do not add UTM tags to internal links on your own site. It breaks session data.

Background: what to know before you rely on it

UTM stands for Urchin Tracking Module, named after the company Google bought to create Google Analytics. Five parameters are standard: source, medium, campaign, term and content. Source is where the visitor came from, medium is the type of channel, and campaign is the name of the effort. The most common issue is inconsistent naming, such as Email and email counted as separate rows. Use lowercase and a naming guide. Do not use UTM links on internal links, because they start a new session and hide the real source. Long tagged links can be shortened for social posts.

Private, free and fast

This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all seo tools, or browse the full list of tools.

Frequently asked questions

What are UTM parameters?

Tags that track the source of traffic.

Are source and medium required?

Yes for useful reports.

Do UTM tags affect SEO?

No, but keep canonical tags on the clean URL.

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