Free server and network tools
Quick, accurate answers for planning a server: how much GPU memory a model needs, what a RAID layout leaves usable, how big a subnet is. Free, no sign-up, and nothing you type leaves your browser.
LLM GPU memory calculator
VRAM for Llama, Qwen, DeepSeek, gpt-oss and more: weights, KV cache and GPUs needed.
Open the tool →RAID and ZFS storage calculator
Usable space, fault tolerance and speed for RAID 0/1/5/6/10 and ZFS mirrors and RAID-Z.
Open the tool →Which server do I need?
Five questions about your project, then 2–3 matching servers with reasons and prices.
Open the tool →Bandwidth calculator
Mbit/s ↔ TB per month, plus the page views, video streams and downloads it serves.
Open the tool →Subnet calculator (IPv4 and IPv6)
Network, mask, usable range and host count for IPv4 and IPv6, and splitting into subnets.
Open the tool →Proxmox and VM sizing calculator
List your VMs, get the CPU threads, memory and storage a Proxmox host needs.
Open the tool →Cloud vs dedicated server cost calculator
A dedicated server vs the nearest AWS, Azure and Google Cloud machine, with disks and traffic.
Open the tool →Uptime and SLA calculator
99.9% = 43 minutes a month. Downtime per day, month and year for any SLA level.
Open the tool →
Built for people who run servers
We made these tools because we answer the same planning questions every day: how much storage RAID-Z2 really leaves, whether a 70B model fits on one GPU, how many virtual machines a host can carry. Each tool shows its working, so you can check the numbers yourself.
- Private: the calculations run in your browser. Nothing you type is stored or sent anywhere.
- Shareable: the address bar keeps your inputs, so you can bookmark a result or send it to a colleague.
- Practical: where it helps, a tool ends with the DediGermany servers that fit, at today's prices.
Ready for your own server?
Dedicated servers in Germany from $89 a month, with unmetered 1 Gbit/s traffic.