Ad math guides
No jargon, no fluff — just the numbers that decide whether your ads make money. Each guide answers one question and links to a free calculator.
Advertising basics
CTR & CPM
Conversion optimization
Break-even CPC
ROAS, MER & ROI
CPA, CAC & LTV
Google Ads
- What is Quality Score?
- How to improve Quality Score
- What is Ad Rank?
- What is Impression Share?
- Google Ads bidding strategies explained
- How to set a Google Ads budget
- How much do Google Ads cost?
- Google Ads cost for dentists
- Google Ads cost for lawyers
- Google Ads cost for real estate
- Google Ads cost for home services
- Google Ads vs Microsoft (Bing) Ads
- Single keyword ad groups (SKAGs)
- Universal negative keywords list (copy-paste)
- Why your Google Ads spend but don't convert
- How to track true ROAS (offline conversions)
AI & automation
- What is Performance Max (PMax)?
- What is AI Max for Search?
- AI Max vs Performance Max
- What is Demand Gen?
- Performance Max vs Demand Gen
- What is Smart Bidding Exploration?
- Best AI PPC tools in 2026
- What is New Customer Acquisition?
- What is Ask Advisor?
- What is Google AI Mode?
- How ads work in Google AI Mode
- What is zero-click search?