Tools
Free browser-based tools for homelab and PC decisions: PSU wattage, power cost, UPS runtime, NAS and SSD sizing, LLM VRAM, and self-hosting break-even.
TechFuel HQ tools
These calculators and pickers cover homelab and PC decisions. Calculations run in your browser. No account is required. I use Google Analytics to measure visits and tool interactions, and retailer-link measurement can identify selected products; calculator settings are removed from Google Analytics page URLs and referrers while campaign tags remain.
About this section
For work that crosses several calculators, start in the Hardware Project workspace or choose a source-linked project guide. Projects stay in this browser unless you export them. Each project keeps one current state per tool; use a separate project or full JSON export for an alternative. The attached evidence list is display-only. Shared snapshots retain the title, product labels, and tool inputs while omitting the use case, constraints, evidence, and diagnostic text.
Shared links include your settings. Anyone with the link can read them, and opening it sends the URL to the site’s hosting infrastructure. The privacy policy covers those requests, Cloudflare Web Analytics and site-search measurement.
For a short route through saved PC builds, NAS capacity and GPU comparisons, read Three ways to keep a hardware plan moving.
Every tool entry links back to the article that justifies its catalog choices. The methodology behind every component pick is in the colophon.
Have a tool you’d like to see built? Email contact@techfuelhq.com.
Last updated: 2026-10-03.
Saved a PC build here? Open saved builds in this browser. Saved builds stay on the device where you created them.
Build & hardware
Hardware Projects
Keep a gaming PC, NAS, custom hardware plan, or diagnostic case connected across TechFuelHQ tools without creating an account.
PC Builder: Parts Picker with Compatibility Checks
Pick PC parts with socket, chipset, RAM-type, PSU, motherboard/case fit and GPU-length checks, plus Amazon and Newegg links. Open CC BY 4.0 dataset.
Homelab + PC Build Budget Builder
Estimate a PC build from your own parts prices plus shipping and tax. Keep unknown costs visible, then browse a separate dated gear snapshot by budget.
PSU Calculator: Power Supply Wattage Calculator
Free PSU calculator sized from your actual parts: pick CPU and GPU to see peak draw, minimum wattage, and the efficiency sweet spot. Runs in-browser.
CPU and GPU Benchmark Lookup for Bottleneck Testing
Look up a CPU's 1080p gaming index and a GPU's index at 1080p, 1440p or 4K, then test the performance limit in your own game.
GPU Comparison Tool: Compare Any Two Graphics Cards (2026)
Compare two graphics cards at 1080p, 1440p, or 4K with one native-raster suite, then enter prices for exact score-per-price and break-even value.
CPU Comparison Tool: Compare Any Two Gaming Processors (2026)
Compare 30 CPUs using a captured 1080p gaming index. See the measured cohort, missing models and limits before applying a result to your own games.
SSD Endurance Calculator: Host Writes to TBW
Calculate time to your SSD's rated TBW from daily host writes or convert DWPD to TBW. Estimate NAND writes separately with an optional WAF input.
NVMe Expansion Compatibility Checker
Check a motherboard manual's documented PCIe lane splits before using a single-drive, passive dual, passive quad, or switched NVMe expansion card.
AM5 ECC Compatibility Checker
Check what current manufacturer sources establish for ECC UDIMM support across three exact AM5 motherboard models and the Ryzen 9 9950X or Ryzen 7 8700G.
Homelab capacity & cost
Homelab Power & Cost Calculator
Calculate annual electricity cost, 3-year operating cost, and cloud savings. Enter each device's idle and load watts, hours per day, and your rate.
Proxmox VM Capacity Planner
Enter host RAM, CPU cores, and VM profile to see how many VMs or LXC containers your Proxmox server can run, with ZFS ARC overhead included.
Docker Homelab RAM Planner
Plan RAM for your self-hosted Docker stack. Pick Jellyfin, Nextcloud, Immich, and n8n to compare sizing estimates; budget separate VMs outside these totals.
NAS & RAID Capacity Calculator
RAID capacity calculator: usable storage, parity overhead, and fault tolerance for RAID 0/1/5/6/10 and ZFS RAIDZ1/2/3, compared side by side.
UPS Runtime Calculator
Estimate UPS runtime from your load and rating. Check watt and VA headroom, then compare generic estimates with supported model-specific runtime points.
Frigate NVR Storage Calculator
Estimate disk space for a Frigate NVR by cameras, resolution, codec, and retention — plus the /dev/shm size Frigate needs. Continuous vs motion compared.
Self-Hosting Break-Even Calculator
Add your SaaS subscriptions, hardware budget, and electricity rate to see exactly when self-hosting pays for itself, month by month, over a 5-year projection.
Networking
Network Transfer Time Calculator
Estimate how long moving your data takes: pick size, link (1/2.5/10GbE, USB, Thunderbolt), and drive speed to see transfer time and your real bottleneck.
Data Usage Calculator: Estimate Your Monthly Internet GB
Estimate your monthly internet data usage in GB from streaming, gaming, video calls, and downloads - and whether you'll pass a 1.2 TB cap. Free, in-browser.
Subnet & CIDR Calculator: IP Ranges, Masks, Hosts
Enter an IPv4 address and CIDR prefix to get the network, broadcast, usable host range, subnet mask, wildcard, and host count — plus split a block into subnets.
PoE Power Budget Calculator: Will Your Switch Power It All?
Size a PoE switch for your APs, cameras, and phones. Add devices, cable length, and headroom to get the budget to buy — plus an 802.3af/at/bt reference.
Displays & gaming
FPS Calculator: Sourced Benchmark Results
Look up average FPS and 1% lows for an exact tested CPU, GPU, game, resolution and preset, with the provider, scene, settings and source attached.
DisplayPort & HDMI Bandwidth Calculator (2026)
Does your resolution, refresh rate, and color depth fit HDMI 2.0/2.1 or DisplayPort 1.4/2.1, with or without DSC? Verified effective bandwidths.
Monitor Size Calculator: Screen Width, Height & Desk Fit
Calculate a monitor's width and height from diagonal and aspect ratio - inches and cm - plus screen area and desk fit. Free, runs in your browser.
PPI & Pixel Density Calculator: Monitor Sharpness (2026)
Free PPI calculator: pixel density of any monitor from resolution and screen size, plus pixel pitch, a sharpness verdict, and scaling advice. Runs in-browser.
Aspect Ratio Calculator: Resolutions, Ultrawide & 16:9 (2026)
Calculate any aspect ratio or resolution: the exact ratio of a screen, ratio-to-pixels scaling, and why '21:9' is really 64:27 or 43:18. In-browser.
FOV Calculator: Convert Field of View Between Aspect Ratios (2026)
Convert horizontal and vertical FOV between preset or custom render dimensions, with same-view references for 4:3, 16:9, and ultrawide.
Mouse Sensitivity Converter & eDPI Calculator (2026)
Convert mouse sensitivity between CS2, Valorant, Apex and Overwatch 2 keeping the same cm/360 feel - plus eDPI and 360 distance. Runs in your browser.
Local AI
LLM VRAM Calculator
Find which local AI models fit your GPU: pick card, model size, quantization, and context length to estimate VRAM (weights + KV cache) and which quant fits.
Local LLM Speed Calculator: Estimate Tokens per Second
Check whether a local LLM roughly fits your GPU, then estimate generation speed from memory bandwidth, model size, and quantization.