Calculators that answer real questions
Twelve free tools for hosting, performance, SEO, marketing and security. Everything runs in your browser: no signup, no email, nothing uploaded.
Hosting
Hosting
Hosting plan calculator
Answer four questions and find out whether shared, private shared or VPS hosting fits your website, with the monthly price.
Hosting
Downtime cost calculator
Work out what an hour of website downtime costs your business, and what different uptime guarantees mean in real hours per year.
Hosting
Uptime SLA checker
Convert any uptime percentage into allowed downtime per day, week, month and year, and check whether your host met its promise.
Hosting
Bandwidth calculator
Estimate the monthly data transfer your website needs based on traffic, page weight and downloads.
Marketing
Performance
SEO
SEO
SEO ROI calculator
Estimate the traffic, leads and revenue that moving up the search results for one keyword could deliver.
SEO
Meta tag generator
Generate title, description, Open Graph and Twitter card tags with live length checking, ready to paste into your page head.
SEO
Schema markup generator
Produce valid LocalBusiness, Service or FAQ structured data in JSON-LD, ready to paste into your page.
SEO
Robots.txt generator
Build a robots.txt file with sitemap reference and optional rules for AI training crawlers and AI search bots.
Security
Why we built these
Most of the questions we get asked before a project starts are arithmetic: which hosting plan, how much will the site cost, what does downtime actually cost, is this keyword worth chasing. Rather than answer them one email at a time, we built the calculators and published them.
Every tool runs entirely in your browser using JavaScript. Nothing you type is sent to a server, stored or logged, which matters particularly for the password checker. You do not need an account and we do not ask for your email.
Need the real numbers?
Calculators get you close. Send us the brief and we will send a written quote with scope and timeline.