Data, Network & Storage
Data transfer, bandwidth, storage capacity and networking calculators.
Technology calculators & converters
Free Technology Calculators & Converters
Fast, practical calculators for internet speeds, digital storage, displays, video, audio and developer conversions.
Most useful
Popular Calculators
Jump straight into commonly used technology calculators and converters.
Explore
Browse by Category
Find the right tool faster through four focused technology categories.
Display, Image & Media
Screen, resolution, pixel density, image and digital media calculators.
Developer & Encoding
Developer conversions, structured data, timestamps and encoding utilities.
CSS & Front-End
CSS units, responsive sizing, colors and front-end calculation tools.
Directory
All Calculators
30 published technology tools, organized by category.
Data, Network & Storage
Display, Image & Media
Developer & Encoding
CSS & Front-End
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Built for clarity
Why use AppZil?
Purpose-built calculators
Each calculator is built around a focused technical task with clear inputs and results.
Runs in your browser
Core calculations run locally without requiring a remote calculation API.
Fast, focused results
Each calculator is designed around a specific technical task without unnecessary steps.
No calculator input storage
TechCalc Core does not store the values you enter into calculators.
Our calculation methodology
We separate formula logic from editorial content, document unit assumptions, and test calculation modules before release.