Free PC tools in your browser
Test your keyboard and mouse, plan a PC build and size the parts. Free guides and calculators, nothing to install.
- Free, no sign-up
- Runs in your browser, nothing is uploaded
- Works in any modern browser
Keyboard & mouse
Keyboard polling rate test
How often your keyboard reports to the PC, in Hz and ms.
Mouse polling rate test
How often your mouse reports its position, in Hz and ms.
Keyboard tester
Check every key, see dead keys and test ghosting in your browser.
CPS test
Count your clicks per second in 1, 5, 10, 30 or 60 seconds.
Mouse sensitivity converter
Convert your sens between 30 games, with eDPI and cm/360.
Reaction time test
Measure your visual reaction time in milliseconds over 5 tries.
Typing test
Your typing speed in WPM, with accuracy and raw WPM.
PC performance & builds
FPS calculator
Estimated FPS for your CPU, GPU, game, resolution and settings.
Bottleneck calculator
Is your CPU or GPU holding the build back?
PSU calculator
How many watts your power supply needs, with 20% headroom.
RAM calculator
How much RAM to buy for your CPU, GPU and main use.
RAM latency calculator
CAS latency and speed to true latency in nanoseconds.
RAID calculator
Usable space and fault tolerance for RAID 0, 1, 5, 6, 10 and 50.
PC price calculator
What a used PC is worth today, part by part.