How to Measure SEO Results: What You Really Need to Look At (and in What Order)

When I audit a new website, the first thing I do is open Google Search Console. And what I find almost always is the same: the tool verified, but never opened. Or GA4 configured without any conversions. We've been doing SEO for months and can't prove anything because we haven't defined what we want to measure.

This guide is for you if you do SEO —or pay someone to do it— and aren't sure if it's working. I'll explain which metrics matter, how to read them, and in what order to act. No 40-page reports, no vanity metrics.

Essential tools: configure them right from day one

Two free tools cover 80% of what any SMB or freelancer needs to measure SEO. The problem isn't that they don't exist: it's that almost nobody configures them correctly.

• Google Search Console: shows you how Google sees you. How many times your website appears, for which keywords, how many clicks you get, and what technical errors Google's robot has detected on your site. It's the most direct data source that exists.
• Google Analytics 4 (GA4): shows you how users behave once they arrive. Which pages they visit, how long they stay, and —most importantly— if they do anything of value: fill out a form, call, buy.

The critical point is this: configure conversions in GA4 before anything else. Without conversions, you can't calculate SEO's return. And every business has its own:

• A clothing e-commerce in Sabadell: conversion = completed purchase.
• A dental clinic in Tarragona: conversion = appointment request form submitted.
• A law firm in Girona: conversion = call or WhatsApp initiated.
• A restaurant in Gràcia: conversion = online reservation or phone click.

If you're not sure how to configure it, that's the first thing you should solve. Everything that comes after depends on it.

The KPIs that really indicate progress

There are metrics that make SEO look like it's working and metrics that prove it's working. Here's the difference:

Net organic traffic: filter out brand

Here's a detail many agencies don't explain to clients: total organic traffic includes searches for your company name. If someone searches "Montserrat Dental Clinic Tarragona" and enters your website, that's not SEO, that's brand awareness. To see the traffic your actual ranking generates, filter brand keywords in Search Console: Performance → Query filter → Exclude [company name]. This filtered figure is what you should grow month over month.

Organic conversions per landing page

In GA4, cross-reference the Organic Search channel with landing pages. You'll see which pages not only receive visits, but convert. In many projects we've worked on, 70-80% of organic conversions come from 3 to 5 specific pages. Optimizing these pages —improving the CTA, speed, value proposition— is the most direct and fastest growth lever you have.

CTR: ranking isn't everything

You can be number 3 on Google and have a 2% CTR if your title is boring. A competitor at number 5 with a well-crafted title can steal double the clicks. Review queries with many impressions and low CTR: they're quick improvement opportunities without touching content.

How to read Search Console step by step

Search Console is the source of truth for your organic SEO. Here's the exact flow I use when auditing a new project:

1. Performance → last 3 months vs. previous 3 months: compare clicks, impressions, and CTR. Drop in clicks with stable impressions = CTR problem (review titles and meta descriptions). Drop in impressions = loss of positions or deindexing. Both drops at once = serious problem to investigate immediately.
2. Filter by page, not by query: identify which URLs generate the most traffic and which have lost it recently. Act first on those that already had traffic and lost it: recovering is always faster than building from zero.
3. Coverage → Errors: pages with 404 errors, canonical issues, pages excluded by accidental noindex. In an e-commerce project in Sabadell we found 200 product pages excluded due to a CMS configuration error. Recovering them took two weeks and meant a 25-35% traffic increase.
4. Core Web Vitals: if there are URLs marked as "Poor," prioritize them. A restaurant in Gràcia with a website that takes 6 seconds to load on mobile loses reservations every day. Google penalizes it and users leave.

Advanced metrics: when they're worth it

Paid tools like Ahrefs or Semrush add value, but not for everyone or at all times. Here's when it makes sense to add them:

For most Catalan SMBs —a hair salon in Terrassa, an architecture studio in Lleida, a bike shop in Badalona— properly configured GSC and GA4 are more than enough. No need to pay 200-400 €/month for tools if you don't have a team using them weekly.

Measurement mistakes I see every week

After auditing dozens of websites from Catalan businesses, the same mistakes repeat over and over:

• Comparing too short periods. SEO has seasonality. An aesthetic clinic in Barcelona will have peaks in January and September. Always compare year-over-year (YoY) or minimum 90-day periods. Weekly variations almost never indicate real trends.
• Reporting the ranking of a single keyword. "We're number 3 for 'Italian restaurant Barcelona'" says nothing if that keyword doesn't convert. What matters is the set of keywords and their impact on traffic and sales.
• Ignoring mobile traffic separately. In many local businesses, 65-75% of traffic is mobile. If your website converts well on desktop but poorly on mobile, you're losing most potential customers without knowing it.
• Not filtering internal traffic. If you and your team visit the website often, exclude your IPs from GA4. In small businesses, internal traffic can significantly distort data and make SEO look better than it actually is.
• Confusing visibility with results. Many impressions on Google is a good sign, but if they don't translate into clicks and conversions, the business notices nothing. Visibility without conversion is noise.

Real timelines: when to expect results?

The difference between an SEO project that grows and one that stalls is almost never technical. It's usually discipline: reviewing data every month, identifying what's not working, and adjusting. Businesses that do this grow; those that wait for SEO to "fix itself" usually end up in the same place six months later.

Conclusion: fewer metrics, better decisions

You don't need 50 metrics to know if your SEO is working. You need the right ones, properly configured and reviewed regularly. Configure conversions in GA4, learn to read Search Console with the flow I've explained, and focus on net organic traffic and the conversions it generates. Everything else is accessory until you've mastered this.

If you want us to review your SEO status together —with no commitment and no incomprehensible report—, write to us and within 48 hours we'll tell you where you stand and what the three priority actions are to improve. We work with businesses in Barcelona, Girona, Tarragona, Lleida, and throughout Catalonia.