Free PC Hardware Calculators & Computer Tools
Calculate, compare and optimize your PC before you buy, build or upgrade.
Featured Calculators
PC Hardware Calculators
Computer Tools
Hardware Resources
Popular Guides
Popular GPU & CPU Bottleneck Pages
Why Use ComputingSkill?
Free, no sign-up
Every calculator and tool works instantly in your browser — no account, no email wall.
Transparent methodology
Every result explains its formula and its limitations. We never dress up an estimate as a lab measurement.
Verified specifications
Hardware specs used in our calculators come from manufacturer data, not guesswork.
Built for mobile too
Every tool is designed to work as well on a phone as it does on a desktop.
Frequently Asked Questions
Are the calculators on ComputingSkill really free?
Yes. Every calculator, converter and guide on this site is free to use, with no account required.
How accurate are the bottleneck and FPS estimates?
They are specs-based estimates designed to catch obviously mismatched hardware pairings and give you a general sense of what to expect — not lab-measured benchmark results. Actual performance depends on the specific game, drivers, RAM and settings.
Where do the hardware specifications come from?
From manufacturer specification sheets and reputable technical references, cross-checked before publishing. We do not fabricate specs, benchmark scores or search-volume figures.