How to Use the GDN vs YouTube Ad CPM Calculator
Even with the same budget, CPM (cost per 1,000 impressions) and conversion rate can differ significantly between channels, so real-world efficiency varies a lot. This calculator takes CPM and expected conversion rate for both the Google Display Network and YouTube, then compares the impressions, conversions, and cost per conversion (CPA) each would produce with the same spend.
YouTube's CPM tends to run higher than Display, but video ads often convert better due to richer storytelling. Display, on the other hand, usually has a lower CPM and produces more raw impressions, though conversion rate can be lower. Which one wins ultimately depends on the cost per conversion once both CPM and conversion rate are factored in.
Whichever channel produces the lower cost per conversion is more efficient for this budget. That said, if your goal is brand awareness rather than direct conversions, raw impression volume may matter more than CPA — weigh the result against your campaign's actual objective.
Frequently Asked Questions
A lower CPM doesn't always mean a lower cost per acquisition (CPA) if conversion rate is also lower. This calculator factors in both CPM and conversion rate to compare true cost per conversion.
This calculator simplifies things by assuming the full budget goes to one channel. In practice, many advertisers run both in parallel depending on goals (awareness vs. conversion) — treat this as a directional comparison.