Interactive DevOps Sizing Calculator

VPS RAM & Server Cost Estimator

Planning your self-hosted infrastructure? Select the applications you want to run on a single machine. We compute baseline memory, OS overhead, and an automatic 25% buffer, then match you with the cheapest cloud VPS provider tier.

1. Select Apps to Co-Host

Click to add or remove apps from your single-server stack

2. System Overhead & Safety Buffer

Fine-tune system overhead or add extra unlisted services (PostgreSQL, Redis, monitoring)

Host OS Overhead:

Custom Extra RAM (MB):

Safety Buffer %:

DevOps Best Practice Guidelines

Linux OOM Killer: When RAM runs out without swap space, Linux will terminate the highest-consuming process (usually your database). Always configure a 2GB to 4GB swapfile on NVMe disks.
Shared PostgreSQL: Running multiple tools (e.g. n8n + Immich + NocoDB) against one optimized central Postgres instance saves ~1.5GB RAM compared to separate containers.
Reverse Proxy: Use Traefik or Caddy to automatically handle Let's Encrypt SSL certificates for all subdomains on ports 80/443.

Calculated VPS Requirements

Base: +

Recommended CPU

Minimum Storage

Best Matched VPS Plans:

Deploy Recommended Hostinger VPS 30-day money-back guarantee • 1-click Docker OS template