A marketing KPI is the one number that tells you whether a marketing goal is being met, such as cost per lead for lead generation or customer acquisition cost for growth. Below you will find KPI examples grouped by goal, the formula for each one, where to find the data, SMART goal examples and the KPIs that matter for AI search.
Key takeaways
- A KPI is a metric tied to a business goal and a target. Every KPI is a metric, but most metrics are not KPIs.
- Pick KPIs by goal first: awareness, leads, sales, retention or AI visibility. Then choose one or two numbers per goal.
- Write each KPI as a SMART goal with a baseline, a target and a date, or nobody will know if it was met.
- Track AI search with citations and share of voice in AI answers, alongside classic SEO metrics.
- A small business can run on five core KPIs (cost per lead, lead-to-customer rate, CAC, average order value and repeat rate) and rarely needs more than eight.
On this page
What is a marketing KPI?
A marketing KPI (key performance indicator) is a measurable value that shows how well marketing is moving the business towards a specific goal. It has three parts: the number itself, a target and a deadline. “Cost per lead” is a metric. “Cost per lead below $60 by the end of Q2” is a KPI.
KPI vs metric: what is the difference?
The difference between a KPI and a metric is the link to a decision. A metric is anything you can count: impressions, page views, followers, email opens. A KPI is the small set of metrics you have agreed to manage the business by. If a KPI moves in the wrong direction, someone changes the budget, the offer or the campaign. If a metric moves and nobody acts, it was never a KPI.
A useful test: for each number on your report, ask “what would we do differently if this doubled or halved?” If there is no answer, keep it as a supporting metric and take it off the front page. Our guide to what to measure in web analytics covers the supporting metrics in more detail.
Marketing KPI examples by goal
The fastest way to choose marketing KPIs is to start from the goal and pick the one or two numbers that prove progress towards it. The table lists the most common marketing KPI examples, with the formula and the place where most teams find the data.
| Goal | KPI | Formula | Where to find it |
|---|---|---|---|
| Awareness | Branded search volume | Searches for your brand name per month | Google Search Console, Google Trends |
| Awareness | Share of voice | Your mentions ÷ total mentions of you and competitors × 100 | Social listening or SEO tools |
| Traffic | Click-through rate (CTR) | Clicks ÷ impressions × 100 | Google Ads, Search Console |
| Lead generation | Cost per lead (CPL) | Marketing spend ÷ new leads | Ad platforms + CRM |
| Lead generation | Conversion rate | Conversions ÷ sessions (or clicks) × 100 | GA4 key events, Google Ads |
| Lead quality | MQL to SQL rate | Sales-qualified leads ÷ marketing-qualified leads × 100 | CRM |
| Sales | Customer acquisition cost (CAC) | Sales and marketing cost ÷ new customers | Finance + CRM |
| Sales | Return on ad spend (ROAS) | Revenue from ads ÷ ad spend | Google Ads, Meta Ads, GA4 |
| Retention | Customer lifetime value (CLV) | Average order value × purchases per year × years as a customer | CRM, e-commerce platform |
| Retention | Churn rate | Customers lost in period ÷ customers at start × 100 | CRM, billing system |
| AI visibility | AI citations | Number of tracked prompts where an AI answer cites or links your site | Manual prompt checks or AI visibility tools |
| AI visibility | AI share of voice | Prompts that mention your brand ÷ prompts tracked × 100 | AI visibility tools |
Click to download this table as an image
Two notes on the formulas. First, CLV here is the simple revenue version; if your margins vary a lot, multiply it by gross margin to get a profit figure you can compare with CAC. Second, in March 2024 Google renamed “conversions” in GA4 to “key events”, so that is where the conversion rate inputs now sit.
How to set marketing KPIs: SMART goal examples
To set a marketing KPI, take a baseline, pick a realistic target and write it as a SMART goal: specific, measurable, achievable, relevant and time-bound. The SMART format goes back to George T. Doran’s 1981 article in Management Review, where A and R stood for assignable and realistic; today they are usually read as achievable and relevant. Either way, it forces a number and a date onto every goal.
- Start from the business goal. Revenue, number of new customers or margin, not “more traffic”.
- Choose the KPI from the table. One primary KPI per goal, plus one supporting metric that explains it.
- Measure the baseline. Use the last three to six months, so one unusual month does not set the target.
- Set the target and the date. Base it on the baseline and the budget, not on a number someone liked in a meeting.
- Assign an owner and a review rhythm. Weekly for paid channels, monthly for SEO and content.
Here are marketing KPI goal examples written in SMART form:
- Lead generation: reduce cost per lead from Google Ads from $85 to $60 by 30 June, keeping lead volume at 120 or more per month.
- Lead quality: raise the MQL to SQL rate from 22% to 30% within two quarters by adding a budget question to the contact form.
- Sales: reach a ROAS of 4.0 on shopping campaigns by the end of Q3 while spending at least $10,000 per month.
- Retention: cut monthly churn from 3.5% to 2.5% by December through an onboarding email series.
- AI visibility: be cited in AI answers for 15 of our 40 tracked buyer prompts by the end of the year, up from 4 today.
A clear KPI also gives you a benchmark to beat. In our HVAC marketing case study, paid ads brought leads at $34–138, against the $200–250 that HVAC search leads typically cost in the Bay Area.
Marketing KPIs by channel, including AI search
Each channel needs its own KPIs, but every channel KPI should connect back to leads, sales or retention. These are the numbers we track most often for each channel.
SEO
Organic sessions to commercial pages, keyword positions for buyer-intent queries, organic conversion rate and organic leads. Impressions and average position from Search Console are useful supporting metrics, not KPIs on their own.
Paid ads
Cost per lead or cost per acquisition, conversion rate, ROAS and impression share on your core keywords. CTR is a supporting metric: a high CTR with a poor conversion rate usually means the ad promises something the landing page does not deliver. If you are starting from zero, our Google Ads Launch Pack is built around these numbers: paying clients from search, without burning budget on guesses.
Click rate, conversion rate from email and revenue per email sent. Open rate is no longer reliable on its own: since Apple Mail Privacy Protection arrived with iOS 15 in September 2021, Apple Mail preloads images, so many “opens” are recorded whether or not a person read the email.
Social media
Engagement rate, clicks to the site and leads or sales from social traffic. Follower count is a vanity metric unless your goal is awareness and you track it against competitors.
AI search
AI assistants such as ChatGPT, Microsoft Copilot, Gemini, Perplexity and Google’s AI Overviews now answer many buyer questions before anyone clicks. The KPIs here are AI citations (how often answers link to or name your site for a fixed set of prompts), AI share of voice against competitors and referral sessions from AI assistants, which GA4 shows as referral traffic from domains like chatgpt.com, copilot.microsoft.com, gemini.google.com and perplexity.ai. Our guide to getting cited in AI answers explains how to build the prompt list, and the AI Visibility Boost service tracks it for you.
Pick fewer KPIs than you think you need. If a report has twenty numbers on the first page, nobody in the room knows which one to fix first.
Serhii Yelbaiev, Well Web Marketing
5 marketing KPIs for a small business
Most small businesses can run their marketing on five KPIs that link spend directly to revenue.
- Cost per lead. Tells you which channels bring enquiries at a price you can afford.
- Lead-to-customer rate. Shows whether the leads are any good, and whether sales follow up fast enough.
- Customer acquisition cost. The full cost of winning one customer, including ads, agency fees and tools.
- Average order value. A small increase here often beats a big increase in traffic.
- Repeat purchase rate. The share of customers who buy again within a set period, the simplest view of retention.
Put these five on one page and check them monthly. If you want them updated automatically from Google Ads, GA4 and your CRM, our analytics dashboard setup builds exactly that view.
Common mistakes with marketing KPIs
Most KPI problems come from measuring what is easy rather than what matters.
- Tracking vanity metrics. Impressions, followers and page views look good in reports but rarely change a decision.
- No baseline. A target without a starting point cannot be judged as ambitious or easy.
- Too many KPIs. More than two per goal spreads attention thin.
- Trusting last-click data alone. It undervalues channels that start the journey. Read our guide to attribution models before you cut a channel.
- Ignoring consent gaps. When visitors decline cookies, GA4 records fewer conversions. Check how Consent Mode and privacy-first measurement affect your numbers before comparing periods.
- Never reviewing the KPI itself. When the goal changes, the KPI should change with it.
Frequently asked questions
Common marketing KPIs include cost per lead, conversion rate, customer acquisition cost, return on ad spend, customer lifetime value, churn rate, MQL to SQL rate, click-through rate and, for AI search, AI citations and AI share of voice.
A metric is any number you can measure. A KPI is a metric you have tied to a business goal, a target and a deadline, and that you use to make decisions.
Track one primary KPI per goal and one or two supporting metrics. A small business can start with five core KPIs and rarely needs more than eight in total.
Start from the business goal, choose the KPI that proves progress, measure a baseline over three to six months, then set a SMART target with an owner and a review date.
For example: reduce cost per lead from $85 to $60 by 30 June, or raise the MQL to SQL rate from 22% to 30% within two quarters.
Build a list of buyer prompts, check them regularly in ChatGPT, Microsoft Copilot, Gemini, Perplexity and Google AI Overviews, and count how often your site is cited or mentioned compared with competitors. Add AI referral sessions from GA4.
Not sure which KPIs to put on your dashboard? Start with an analytics dashboard setup or book a call with Well Web Marketing.
Sources and method
- George T. Doran, “There’s a S.M.A.R.T. way to write management’s goals and objectives”, Management Review, 1981.
- Google Analytics Help, Conversions vs. key events in Google Analytics: conversions renamed key events in GA4, March 2024.
- Apple, Mail Privacy Protection in the Mail app, introduced with iOS 15 in September 2021.
- Formulas are standard industry definitions; targets in the SMART examples are illustrative. Benchmarks from our own client work are cited only where we can show the data. Last reviewed October 2026.