The share of clients or customers lost over a period.
FormulaClients lost in the period ÷ clients at the start of the period
Example: Losing 2 of 20 clients in a year is a 10% annual churn rate.
The percentage of people who saw an ad or search result and clicked it.
FormulaClicks ÷ impressions × 100
Example: 50 clicks from 2,500 impressions is a 2% CTR.
In a client report: A falling CTR with a rising CPC often points to ad fatigue.
A branded place where a client can view their reports and results, usually without seeing the software vendor’s branding.
A valuable action a visitor takes, such as a purchase, a form submission or a phone call. What counts as a conversion should match the client’s goals.
In a client report: Agree with the client in writing what counts as a conversion before you report on it.
The percentage of visitors or clicks that become conversions. The denominator varies by tool, so state whether it is sessions, users or clicks.
FormulaConversions ÷ visitors (or clicks) × 100
Example: 30 conversions from 1,000 clicks is a 3% conversion rate.
A statistical relationship between two metrics that tend to move together. It does not prove one causes the other.
Example: Email open rate and email click rate often rise and fall together.
In a client report: Describe a strong correlation as a lead worth checking, not as the cause.
What it costs in ad spend to get one conversion or customer.
FormulaAd spend ÷ conversions
Example: $900 spent for 30 conversions is a $30 CPA.
The average amount you pay for each click on an ad.
FormulaAd spend ÷ clicks
Example: $300 spent for 200 clicks is a $1.50 CPC.
What it costs in ad spend to get one lead, such as a form fill or enquiry.
FormulaAd spend ÷ leads
Example: $1,200 spent for 57 leads is about $21 per lead.
The cost of showing an ad 1,000 times.
FormulaAd spend ÷ impressions × 1,000
Example: $50 for 10,000 impressions is a $5 CPM.
The total sales and marketing cost of winning a new customer, not just ad spend.
FormulaTotal sales and marketing cost ÷ new customers
In a client report: CAC includes more than CPA, so be clear which one you are reporting.