How to use this tool
Replace the example values with your own inputs. Results update as you type. Keep your measurement period and definitions consistent, then use the result to inform the next question in your advertising review.
The formula
A UTM URL adds source, medium, campaign and optional content and term parameters to a destination URL.
Worked example
Use source=meta, medium=paid_social and campaign=product_launch to group your campaign visits consistently.
What the result can tell you
UTM tags identify traffic; they do not replace conversion tracking or solve cross-device attribution. Never put personal data in a campaign URL.
Is it free, and where do my inputs go?
The tool runs in your browser without an account or an ad-platform connection. Calculation inputs are not sent to WhatWins. If you save a scenario, it stays in this browser on this device.