PC & Peripheral Toolbox
Small tools to calculate before you buy, check after you buy, and keep with the same PC record: monitor checks, keyboard / mouse / gamepad tests, and screen-size, capacity and power-cost calculators.
Nothing leaves your device. Every tool runs only inside your browser. What you enter, the results, and your My PC records are never sent to this site's servers or to analytics. Records are kept in this browser, and are exported (backup) only when you press the button.
Storage: Checking…
Screen
Check a monitor by eye, compare sizes
- Display checkDead pixels, uniformity and banding in full screen. For visual checks; it does not diagnose faults
- Screen size & PPIPPI from diagonal and resolution, compare two screens, viewing-distance guide
Input devices
Test keyboards, mice and gamepads
- Keyboard testPressed keys, rollover and chatter logging. JIS layout supported
- Mouse testClick and double-click logging, wheel. Does not measure polling rate or DPI
- Gamepad testButtons, sticks and a guide to centre drift
Calculators
Capacity, free space and power cost
- Capacity & transfer timeGB/GiB conversion and transfer time. Enter the speed yourself
- Free-space plannerStack install sizes against the free space you enter
- Power costMonthly and yearly cost from wattage and tariff, plus the cost of replacing
Games
Compare a game's published Steam requirements with your PC
- Steam requirement checkChecks a game's minimum and recommended requirements against your PC item by item as confirmed / short / unknown. It never says "it runs" and shows no FPS
Measurements & logs
Read FPS logs and test runs as numbers and graphs
- FPS log analyzerAverage FPS, 1% low and frame-time graphs from a PresentMon CSV; compare two logs. The log never leaves your device
- Run viewer (PartsLife)Open a PartsLife test run (run JSON + sensor CSV): temperature, clock and power graphs, with FPS logs overlaid
- CPU browser test & load checkFixed workload on one and all Workers, plus a load check for computation mismatches. Not game FPS
- GPU browser render test & load checkCompleted work per second in a fixed WebGPU scene, plus a load check. Requires WebGPU
My PC
Keep your PC, devices and results
- My PCKeep your PCs, devices and tool results. Registering is optional; the tools work without it. Build codes (PCB1.) can be imported
Good to know
- Results record what reached this browser or what you saw. They do not diagnose faults or guarantee in-game performance.
- Browser storage can be cleared. Export a backup of records you care about.
- If storage is blocked (some private modes), the tools still work while the page is open and a backup can still be exported.