Free tools
Check your technology in minutes, for free.
Calculators, checklists and trusted free tools for your website, security, network, business and brand. Our tools run in your browser and nothing you enter is sent to us.
- No sign-up
- Instant results
- Private by design
52 free tools
Free tools for websites, security, networks and business
Our own calculators and checklists, plus trusted free tools from other providers. Every link opens in a new tab, and none of them need an account with us.
Website, domains & SEO 10 tools
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Domain Name Generator
Ideas for available domain names from a keyword.
by Namecheap
(opens in a new tab)
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Domain Availability Checker
Check .co.tz, .tz, .com and more, and register with us.
Extrion
(opens in a new tab)
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Website Budget Estimator
The package that fits, plus one-time and yearly costs.
Extrion
(opens in a new tab)
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Website SEO Checker
A free SEO audit of any page with a list of fixes.
by SEOptimer
(opens in a new tab)
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Meta Title & Description Preview
Preview how your page looks in Google results.
by Mangools
(opens in a new tab)
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Website Speed Checker
Google’s PageSpeed test for mobile and desktop.
by Google
(opens in a new tab)
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Broken Link Checker
Scan a website for dead internal and external links.
by BrokenLinkCheck
(opens in a new tab)
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Hosting Cost Estimator
Compare our hosting plans and yearly prices.
Extrion
(opens in a new tab)
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Business Name Generator
Brainstorm business names from a keyword.
by Shopify
(opens in a new tab)
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Website Launch Checklist
Everything to check before a new website goes live.
Extrion
(opens in a new tab)
Security & CCTV 12 tools
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CCTV Storage & Bandwidth Calculator
Disk space, bandwidth and how many days a disk holds.
Extrion
(opens in a new tab)
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CCTV Camera Quantity Estimator
Place cameras on a floor plan to see how many you need.
by JVSG
(opens in a new tab)
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Which Camera Type? Planner
The camera design and features for each location, as a list.
Extrion
(opens in a new tab)
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Bullet, Dome or Turret Guide
Five questions and the camera shape that suits a spot.
Extrion
(opens in a new tab)
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CCTV Remote Access Safety Check
Is viewing your cameras on your phone set up safely?
Extrion
(opens in a new tab)
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Camera Field-of-View Calculator
Lens, distance and coverage for a camera position.
by IPVM
(opens in a new tab)
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PoE Power Budget Calculator
Check that a PoE switch can power all your devices.
Extrion
(opens in a new tab)
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Password Generator
Strong random passwords, generated in your browser.
Extrion
(opens in a new tab)
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Password Strength Checker
See how hard a password is to guess. Never sent anywhere.
Extrion
(opens in a new tab)
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Website SSL Certificate Checker
A deep test of a website’s SSL/TLS set-up.
by Qualys SSL Labs
(opens in a new tab)
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Security Headers Checker
Grade a website’s HTTP security headers.
by Snyk
(opens in a new tab)
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Cybersecurity Readiness Assessment
A 25-point check with a score and priorities.
Extrion
(opens in a new tab)
Networking & IT 10 tools
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IP Subnet Calculator
Network, broadcast, mask and host range for any subnet.
Extrion
(opens in a new tab)
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IP Address Lookup
Your public IP, provider and location.
by IPinfo
(opens in a new tab)
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DNS Lookup Tool
Look up A, MX, TXT and other DNS records.
by Google Admin Toolbox
(opens in a new tab)
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Wi-Fi Access Point Estimator
Plan access points on a floor plan with coverage maps.
by Ubiquiti UniFi Design Center
(opens in a new tab)
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Network Bandwidth Calculator
Convert between data sizes, speeds and transfer times.
by Calculator.net
(opens in a new tab)
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Internet Download Time Calculator
How long a download takes on your connection.
by Omni Calculator
(opens in a new tab)
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Data Transfer Time Calculator
Time to move data between devices or sites.
by Omni Calculator
(opens in a new tab)
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Server Storage Calculator
Storage, capacity and backup calculators for servers.
by WintelGuy
(opens in a new tab)
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RAID Storage Calculator
Usable capacity for each RAID type and disk mix.
by Synology
(opens in a new tab)
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Network Equipment Cost Estimator
List the equipment you need and get our prices.
Extrion
(opens in a new tab)
Business software & productivity 10 tools
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Custom Software Cost Estimator
Browse our software and ask for an estimate.
Extrion
(opens in a new tab)
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Mobile App Development Cost Estimator
Tell us about your app and get a costed proposal.
Extrion
(opens in a new tab)
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IT Infrastructure Planner
Build your list of systems and equipment by section.
Extrion
(opens in a new tab)
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Business IT Health Check
Check your network, Wi-Fi and IT basics.
Extrion
(opens in a new tab)
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IT Support Cost Calculator
Estimate a year of IT costs, support included.
Extrion
(opens in a new tab)
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Digital Transformation Readiness Quiz
How ready your organisation is to go digital.
Extrion
(opens in a new tab)
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Business Automation Savings Calculator
Hours and money saved by automating a task.
Extrion
(opens in a new tab)
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Project Requirements Generator
Turn your project into an itemised request.
Extrion
(opens in a new tab)
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QR Code Generator
Free QR codes with your logo and colours.
by QRCode Monkey
(opens in a new tab)
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Electronic Business Card Generator
A free digital business card you can share.
by HiHello
(opens in a new tab)
Branding, printing & design 10 tools
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Printing Cost Calculator
Instant prices for common print products.
by VistaPrint
(opens in a new tab)
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Banner & Signage Cost Estimator
Banner sizes, materials and prices.
by VistaPrint
(opens in a new tab)
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Business Card Design Size Guide
Business card sizes and ready-made templates.
by Canva
(opens in a new tab)
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Image Compressor
Shrink images in your browser without losing quality.
by Google Squoosh
(opens in a new tab)
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Image Format Converter
Convert between JPG, PNG, WebP, HEIC and more.
by CloudConvert
(opens in a new tab)
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Color Palette Generator
Generate and save matching colour palettes.
by Coolors
(opens in a new tab)
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QR Code Generator for Business Cards
A vCard QR code that saves your contact details.
by QR Code Generator
(opens in a new tab)
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Social Media Image Size Guide
Current image sizes for every social network.
by Sprout Social
(opens in a new tab)
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Logo Brief Generator
Answer guided questions to brief your logo design.
Extrion
(opens in a new tab)
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Brand Identity Questionnaire
Our full brand questionnaire, sent straight to our team.
Extrion
(opens in a new tab)
No tools match your search. Tell us what you need and we may build it.
External tools are free services run by their own providers, listed for convenience. Extrion Tech is not affiliated with them; their own terms and privacy policies apply.
Next step
Want an expert to review your results?
A short call can turn a score into a plan with priorities, costs and timelines.
- A practical, jargon-free summary
- Quick wins you can do yourself
- A proposal if you want help implementing
Need something not on this list?
Tell us what you would like to measure, plan or compare. We may build the tool.
