GamerKitFree gamer tools · zero fluff
The numbers that
give you the edge.
Fast, no-nonsense calculators for gamers — server specs, PSU wattage, aim sensitivity, Robux value and more. Get the exact answer you came for. No account, no paywall, no waffle.
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The toolkit
Pick your tool
PC Build
Can I Run It? FPS Checker
Will your PC run it, and how well? Real FPS estimate for 25+ games.
OPEN →Minecraft
Minecraft Server Calculator
How much RAM does your server need? Get the exact spec + a host that fits.
OPEN →PC Build
PSU Wattage Calculator
What power supply does your PC need? Exact wattage from your CPU + GPU.
OPEN →PC Build
Bottleneck Calculator
Will your CPU hold your GPU back? See the bottleneck at 1080p, 1440p & 4K.
OPEN →Minecraft
Minecraft Anvil Calculator
The cheapest order to combine your enchantments — before you hit 'Too Expensive!'.
OPEN →FPS Aim
Mouse Sensitivity Converter
Match your aim across Valorant, CS2, Apex & more — exact sens, eDPI & cm/360.
OPEN →Roblox
Robux to USD / DevEx Calculator
What are your Robux really worth — after the cut, DevEx and tax?
OPEN →Roblox
Roblox Trading Calculator
Account value, trade fairness & sale profit — the maths real traders need.
OPEN →FPS Aim
Crosshair Generator
Design your Valorant or CS2 crosshair live, then copy the code into your game.
OPEN →PC Build
Upgrade Path Advisor
Not just a diagnosis — the exact CPU or GPU to buy next, for your budget.
OPEN →PC Build
Refresh Rate Advisor
New monitor or new GPU? Find out which upgrade actually helps.
OPEN →Roblox
Robux Allowance Planner
How many weeks of pocket money until you can afford it?
OPEN →PC Build
GPU Lifespan Checker
Keep it or replace it? See how many popular games your graphics card still runs smoothly.
OPEN →PC Build
Minimum GPU Finder
The weakest graphics card that hits your target FPS in your game. Don't overspend.
OPEN →In the workshop