Free tools
Free tools from Lutimize that run right in your browser, nothing to install.
PC parts
Check whether your CPU and graphics card are enough for a game, how many watts your power supply needs, and what your PC costs in electricity.
- PC Bottleneck Check See which part, CPU or graphics card, hits its limit first at your resolution.
- GPU Tier List for Gaming Rank desktop graphics cards by gaming tier and compare any two.
- CPU Tier List for Gaming Rank desktop CPUs by gaming tier and compare any two.
- Check My PC Specs See the specs your browser can read, and load the specs the app found when you sign in.
- PSU Calculator Work out the power supply size (W) your CPU and graphics card need.
- PC Electricity Cost Calculator Work out your monthly electricity cost from PC and monitor watts and hours of use.
Keyboard & mouse
Test keys, mouse buttons and wheel, click speed, polling rate and real DPI right in your browser.
- Keyboard Test Find dead keys, chatter and rollover limits on an on-screen keyboard.
- Mouse Test Check that every mouse button and the wheel register, and catch double-click faults.
- CPS Test Click for a set time and measure your clicks per second (CPS).
- Mouse DPI Analyzer Move your mouse a set distance along a ruler to measure its real DPI.
- Mouse Polling Rate Test Measures how many times per second your mouse reports (polling rate) in the browser.
- Mouse Sensitivity Converter Keep your aim when you switch games. Converts sensitivity between shooters.
- eDPI Calculator Work out eDPI and cm/360 from your DPI and sensitivity.
Monitor
Check for dead pixels, ghosting and whether your monitor runs at its refresh rate, and compare monitor sizes and PPI.
- Monitor Test: Dead Pixel and Ghosting Test Check for bad pixels and ghosting with full-screen colors and a moving shape.
- Monitor Refresh Rate Test Measures your screen's real refresh rate (Hz) right in the browser.
- Monitor Size Comparison & PPI Calculator Overlay two monitors to scale and compare real size, area and PPI.
Mic & speakers
Check your mic input and the left and right channels of your speakers or headset.
Gaming
Test your reaction time, aim and gamepad, and find out why a game stutters.
- Reaction Time Test Click the moment the screen changes to measure your reaction time (ms) and average it.
- Aim Trainer Practice your aim in the browser with flick, tracking and multi-target modes.
- Gamepad Tester Check that every controller button, trigger and stick registers, and test for stick drift.
- FPS Drop and Stutter Cause Checker Pick your symptoms to see what is causing frame drops or stutter and how to fix it.
Windows troubleshooting
Look up what a blue screen stop code means and what to check.