Tech Decisions Holding You Back? Get the Clarity You Need.
From phone trade-ins to GPU power requirements, our calculators help you make informed decisions about your devices and electronics.
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Why Choose GearMath?
Built with simplicity and accuracy in mind. Here's what makes our calculators stand out.
Instant Results
Get accurate calculations in milliseconds. No waiting, no page reloads - just instant answers.
Privacy First
All calculations happen in your browser. We never collect, store, or transmit your data.
Dark Mode
Easy on the eyes with automatic dark mode support. Works seamlessly with your system preferences.
Mobile Friendly
Fully responsive design works perfectly on phones, tablets, and desktops.
Open Source
Transparent calculations you can trust. Our formulas are based on industry standards.
Free Forever
No subscriptions, no premium tiers, no hidden costs. All features are completely free.
Featured Calculators
Our most popular tools to help you make smarter tech decisions. Each calculator delivers accurate, actionable results.
Phone Trade-in Depreciator
Calculate the declining value of your phone over time for resale or trade-in
GPU/PSU Matcher
Ensure your graphics card's power requirements are met by your PSU
Monitor PPI/Clarity
Calculate pixels per inch to determine screen sharpness for any display
Internet Speed Requirements
Calculate bandwidth needs based on streaming, devices, and activities
Frequently Asked Questions
Got questions? We've got answers. If you don't find what you're looking for, feel free to reach out.
Ready to Make Smarter Tech Decisions?
Start using our free calculators today. No signup required - just pick a calculator and get instant results.