Marketing Calculators
UTM Link Builder
Add UTM parameters to any link so you can see exactly which post, email or ad sent the traffic in Google Analytics.
Runs entirely in your browser — nothing you enter is sent or stored.
How it works
Parameters are appended with the browser's URL API, so existing query strings and #fragments are kept intact. Lowercasing matters because GA4 treats "Instagram" and "instagram" as two different sources.
Frequently asked questions
Should I tag internal links?
No. UTM tags on links within your own site start a new session and break attribution.
Which medium values does GA4 recognise?
Use standard ones — cpc, email, social, referral, affiliate, display — so traffic lands in the right default channel group.