Free tools for reading your traffic
Ten free tools for the numbers that come up when you run a website: a traffic checker, six calculators and a UTM builder. The calculators and the builder run in your browser and nothing you type is sent anywhere.
- Website traffic checker
Enter any website to see roughly how many visits it gets from Google, where they come from, and what it's built and measured with.
- Robots.txt checker
Paste a robots.txt file, enter a URL and a crawler such as Googlebot, and see whether it is allowed or blocked and which rule decided.
- CTR calculator
Turn clicks and impressions into a click-through rate, see its likely range, and find out how many more clicks a target rate would take.
- CPM calculator
Solve for cost, CPM or impressions from the other two, add clicks for CTR and cost per click, or turn a cost per click and CTR into an effective CPM.
- ROAS calculator
Turn ad spend and revenue into a ROAS, find your break-even ROAS from your profit margin, or see the revenue a target ROAS needs.
- Engagement rate calculator
Work out your engagement rate on Instagram, TikTok or Facebook from likes, comments, shares and saves, by followers, reach, impressions or views.
- Bounce rate calculator
Turn sessions and bounced sessions into a bounce rate and engagement rate, add total time for average session duration, and see why GA4 and older tools differ.
- Conversion rate calculator
Turn visitors and conversions into a conversion rate and its likely range, then see what a lift is worth in revenue.
- Customer lifetime value calculator
Turn average order value, purchases per year and customer lifespan into a customer lifetime value, then add a margin and acquisition cost for LTV:CAC and payback.
- UTM builder
A free UTM builder for Google Analytics (GA4): add source, medium, campaign and campaign ID to a link and copy a clean, lowercase tagged URL. Nothing you type leaves your browser.
Which tool for which question
- Is this page's title pulling its weight in search? Put its clicks and impressions into the CTR calculator and see the range the rate could really sit in. The SEO and Google Analytics guide covers where those two numbers come from.
- Are enough visitors turning into customers or sign-ups? The conversion rate calculator turns visitors and conversions into a rate and shows what a lift would be worth. If many visitors leave after one page, read the bounce rate guide first.
- What is this ad costing per 1,000 impressions, and what would my budget buy? The CPM calculator solves for cost, CPM or impressions from the other two, and turns a cost per click and CTR into an effective CPM you can compare.
- Did the ads earn back what they cost, and what ROAS do I need to break even? The ROAS calculator turns ad spend and revenue into a return on ad spend, and your profit margin into a break-even ROAS.
- What is a customer worth over time, and is that more than they cost to win? The customer lifetime value calculator turns order value, purchase frequency and lifespan into a lifetime value, and compares it with your acquisition cost.
- Which campaign sent this visit? Tag every link you share with the UTM builder. The UTM parameters guide explains the naming habits that keep reports clean, and the referral traffic guide shows where untagged visits end up.
Not sure where your traffic is today? Start with how to check website traffic.
Want the background first? Browse the guides. These tools are made by Flindev, who also make Stickybeak, live analytics for people who run more than one site. Read about Stickybeak.