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The few metrics that actually tell you marketing is working

Most marketing dashboards are full of numbers that feel good and decide nothing. Here are the few that actually tell you whether your marketing is working, and the ones worth ignoring.

By Suman Banerjee Published 29 Sep 2026 ~6 min read
The short answer

Ignore the vanity numbers. The metrics that matter are the ones tied to money and trend: cost to acquire a customer, the value a customer brings over time, where your best customers actually came from, and whether those are improving. If a number does not change a decision, stop watching it.

The numbers that fool you

Impressions, followers, likes and raw traffic feel like progress, which is exactly why they are dangerous. They almost always go up, they rarely tie to revenue, and they let a struggling campaign look healthy. A post can reach thousands and sell nothing, and the vanity number will happily celebrate it.

The test for any metric is simple: would a change in this number change a decision you make? If not, it is decoration.

In shortImpressions, followers and raw traffic feel good and decide nothing. If it changes no decision, ignore it.

The numbers tied to money

A short list actually matters. What it costs you to win a customer. What that customer is worth over the whole relationship, not just the first sale. The rate at which interest turns into paying customers. And how long it takes to earn back what you spent to acquire them. These numbers tie effort to money, so they change what you do.

You do not need all of them perfectly. You need a couple, tracked honestly, that tell you whether you are buying customers for less than they are worth.

In shortCost to acquire, lifetime value, conversion and payback. A couple of these, tracked honestly, guide every call.

Know where your customers actually come from

Ask new customers how they found you, and track it, because the honest answer is often not where you spend the most. The channel that feels busy is not always the one that pays. Once you know which sources bring your best customers, you can put more into what works and quietly stop funding what does not.

This one question, asked consistently, is worth more than most analytics setups, because it ties a real customer to a real source.

In shortTrack how customers actually found you. It is often not where you spend most. Fund what works.

Watch the trend, not the day

Any single day or week is mostly noise. Marketing numbers bounce around for reasons that have nothing to do with your work, and reacting to each wiggle leads to constant, pointless changes. What matters is direction over time: is your cost to acquire a customer falling, is your best channel growing, quarter on quarter.

Zoom out. A metric that is noisy day to day is often crystal clear over three months, and that is the horizon decisions should live on.

In shortA day is noise. Judge the direction over months, and stop reacting to every wiggle.

Common questions

Isn't more traffic always good?

Not on its own. Traffic that does not convert costs you money to attract and tells you nothing. A smaller number of the right visitors who buy is worth far more than a big number who bounce.

What is the one metric to start with?

If you track only one thing, track what it costs to win a customer against what that customer is worth. If you are buying customers for less than they bring you, most of the rest sorts itself out.

How do I know where a customer came from?

Ask them, simply and consistently, and record it, alongside whatever analytics you have. The self reported answer often reveals what the dashboards miss.

How often should I check these?

Look at the trend monthly, not the numbers daily. The useful signal lives over months. Checking every day mostly invites you to react to noise.

Not sure your marketing is actually working?

Tell us how you measure growth today and we will help you focus on the few numbers that tie effort to money.