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Screen Size Comparison
Compare screen sizes side-by-side to visualize physical dimension differences.
Use Tool ➜TechCompare
Tech Calculators & Comparison Tools
Quickly compare device sizes and specifications with clear visuals and helpful tools.
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Tools
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Curved Monitor Visualizer
Visualize monitor curvature radius (1000R, 1500R, 1800R) to see the real curve.
Use Tool ➜📏
PPI & Retina Calculator
Calculate PPI and Retina distance for your display.
Use Tool ➜🔌
Display Bandwidth Calculator
Check if your HDMI/DP cable supports your resolution and refresh rate.
Use Tool ➜🎮
FPS Visualiser
Visualise the impact of different FPS settings on your game experience.
Use Tool ➜💽
RAID Calculator
Calculate usable capacity and fault tolerance for RAID 0, 1, 5, 6, and 10.
Use Tool ➜⚡
Data Transfer Calculator
Estimate transfer times for files over USB, WiFi, Ethernet, and more.
Use Tool ➜💡
Power Cost Estimator
Estimate annual electricity costs for your PC, Server, or TV.
Use Tool ➜🏎️
Data Read Visualizer
Visualize the massive speed difference between CPU cache, RAM, and storage.
Use Tool ➜🔒
Password Generator
Generate secure, random passwords locally in your browser.
Use Tool ➜🧠
RAM Latency Calculator
Convert DDR3/DDR4/DDR5 timings (CL, tRCD, tRP, tRAS) into true latency in nanoseconds.
Use Tool ➜🔥
WebGPU Benchmark
Stress-test your GPU right in the browser with real WebGPU workloads and get a performance score.
Use Tool ➜#️⃣
Text Encoding Converter
Convert between Text, Base64, Binary, Hexadecimal, and Decimal formats.
Use Tool ➜📄
JSON Formatter
Validate, format, and minify JSON data with syntax highlighting.
Use Tool ➜⏰
Unix Timestamp
Convert between Unix timestamps and human-readable dates.
Use Tool ➜🎨
Color Picker
Pick colors and convert between HEX, RGB, HSL, CMYK, and HSV formats.
Use Tool ➜♿
Contrast Checker
Check color contrast ratios for WCAG AA/AAA accessibility compliance.
Use Tool ➜Browse by category
About TechCompare
TechCompare is a collection of free, browser-based tools for working with displays, hardware, storage, colour, code, and security. Every calculator, converter, and visualiser runs entirely inside your browser, no accounts, no installs, no uploads of your data. Pick a tool from the grid above or search by name to find the right one for the question in front of you.
The site is organised into seven focused categories. Use Screens when shopping for a monitor or TV, Games for FPS and GPU questions, Storage for drives and RAM, Hardware for power and memory timings, Security for generating passwords, Developer for everyday text and JSON utilities, and Design for colour and accessibility work. Most tools take a single input and give you a clear, visual answer, the kind of small practical question a search engine can't answer directly.
Frequently asked questions
Are all the tools on TechCompare free?
Yes. Every calculator, converter, and visualiser on TechCompare is free to use, with no accounts, no rate limits, and no paid tier. Tools work identically whether you visit once or a thousand times a month.
Do the tools work offline?
Most do. Once a tool's page has loaded, it runs entirely in your browser and doesn't need the network to keep working. The WebGPU Benchmark is the only tool that benefits from the network (for reporting scores); everything else is fully local.
Does TechCompare collect or store my data?
No. Tools like the Password Generator, JSON Formatter, and the calculators never send your inputs anywhere, all work happens inside your browser. Anonymous, aggregated site analytics are used to understand which tools people find useful, and you can opt out via your browser's Do Not Track setting.
Can I use these tools on my phone?
Yes. Every tool is responsive and works on modern mobile browsers, such as Safari on iOS, Chrome on Android, and any recent Chromium-based browser. The WebGPU Benchmark needs a browser with WebGPU support, which covers most recent Android devices and desktop Safari 17 or later.
Who is TechCompare for?
Anyone who works with displays, hardware, storage, or colour: developers, designers, PC builders, gamers, video editors, system administrators, and IT buyers. Each tool targets a small practical question rather than trying to be a general-purpose suite, so the answers are quick and specific.
How do I suggest a new tool?
Join the Discord community linked in the site footer, where tool suggestions and feedback happen. Many of the current calculators started as Discord requests from people who needed an answer no existing site gave them cleanly.