41 free tools · no sign-up · works on mobile
Every tool a PC builder needs - in one place
Bottleneck calculators, PSU sizing, FPS estimates, compatibility checkers, comparisons, and 35 more free tools. All free, all in your browser, no account required.
- Free Tools
- 41 Free Tools
- CPUs Tracked
- 88 CPUs Tracked
- GPUs Tracked
- 83 GPUs Tracked
- Free Forever
- 100% Free Forever
Most popular tools
Browse all 41 tools
Click any tool to start. Everything runs instantly in your browser.
Core Tools 6
Comparisons 4
Compatibility 9
Performance 7
Monitor & Display 6
Power & Network 6
The complete PC building toolkit
Planning a PC means answering a lot of small questions before you spend money. The Bottleneck Calculator tells you whether your CPU and GPU are balanced, the PSU Calculator sizes your power supply, the FPS Calculator estimates frame rates across 58 popular games, and the PC Build Planner assembles a complete compatible build from your budget and purpose.
Our compatibility checkers cover every part of the build process — CPU, motherboard, RAM, CPU cooler, GPU size, PCIe, NVMe, and PSU — so you can verify your parts list works together before buying. The comparison tools let you pit any two CPUs or GPUs head-to-head with spec tables, performance scores, value calculations, and clear buying verdicts.
For deeper analysis, the PC Build Score rates your build across gaming, content creation, streaming, and AI workloads. The VR Ready Checker tests readiness for Meta Quest, Rift, and Valve Index, and the Ray Tracing Performance tool estimates RT FPS across Cyberpunk, Alan Wake 2, and more.
We also cover the full monitor and display stack — PPI, refresh rate, aspect ratio, viewing distance, HDR tiers, and resolution — plus power and network tools like electricity cost, UPS sizing, streaming bitrate, ping, download time, and bandwidth calculators. Every tool is free, requires no sign-up, and runs entirely in your browser.
Why PC Building Toolkit?
Built by PC enthusiasts for PC enthusiasts. No fluff, no paywalls, no sign-ups.
100% Free
Every tool is free forever. No premium tier, no sign-up, no data collection.
Instant Results
Everything runs in your browser. No waiting, no page reloads, no installs.
Real Hardware Data
88 CPUs and 83 GPUs with real benchmark scores, TDP, VRAM and pricing.
41 Tools & Growing
From bottleneck to VR readiness, we cover the entire PC building journey.
Frequently asked questions
Is PC Building Toolkit really free?
Yes - every tool is 100% free with no sign-up, no premium tier, and no data collection. We're funded by optional display ads in the future, never by paywalling tools.
How accurate are the calculations?
We use normalized benchmark scores from real-world testing (Cinebench-style for CPUs, 3DMark-style for GPUs) and weight them against resolution, quality, and workload. Results are solid estimates - treat them as guidance, not guarantees.
Do you track real-time hardware prices?
Our Price Tracking tool uses illustrative simulated data today. We're building integrations with major retailers (Amazon, Newegg, B&H) for real-time price tracking and drop alerts in a future update.
Can I save my builds?
Yes - the Saved Builds tool stores your configurations in your browser's local storage. No account needed. Your builds persist across sessions on the same device.
What hardware do you support?
We track 48+ CPUs (Intel 12th gen through Core Ultra, AMD Ryzen 5000 through 9000) and 50+ GPUs (NVIDIA GTX 16 through RTX 50, AMD RX 6000 through 9000, Intel Arc). Upcoming hardware is listed but disabled until launch.
Does it work on mobile?
Yes - the entire site is responsive. The sidebar collapses into a slide-out drawer on mobile, and every tool works with touch input.
How do I share a specific tool?
Every tool has its own URL (e.g. pcbuildingtoolkit.com/bottleneck-calculator). Bookmark or share that link to send someone directly to a tool.
Can I use these tools for commercial purposes?
Yes - all tools are free to use for personal and commercial build consulting. If you embed or republish results, please link back to pcbuildingtoolkit.com.
Ready to build your dream PC?
Start with our most popular tool — the Bottleneck Calculator.
Get Started