InfraCalc — Network, Server, Linux & CCTV Engineering Calculators
Instant browser-based calculators for Network Engineers, Sysadmins, DevOps Engineers, and CCTV Integrators. No login, zero server data storage.
Directory of 24 Tools
IPv4 Subnet and CIDR Calculator
Calculate IPv4 network address, broadcast, usable host range, netmask, wildcard, binary mask, and RFC address type (RFC 1918, /31, CGNAT).
IPv4 Subnet Split and VLSM Planner
Split an IPv4 network into N equal subnets or allocate boundary-aligned VLSM blocks by required host count with CSV and Markdown export.
IPv6 Subnet Calculator and Prefix Planner (/48, /56, /64)
Expand and compress IPv6 addresses per RFC 5952, calculate network prefix boundaries, /64 SLAAC subnet counts, and child prefix blocks.
MikroTik Bandwidth Calculator (Simple Queue, Burst, PCQ, FQ-CoDel)
Calculate Limit-At (CIR), Max-Limit (MIR), Burst, PCQ, and FQ-CoDel for RouterOS v7 with automated configuration script generation.
MikroTik Multi-WAN PCC Load Balance Calculator
Multi-WAN (2–5 ISP) proportional PCC load balancing and recursive failover configuration script generator for RouterOS v7.
MikroTik Port Forwarding (DST-NAT) and Hairpin NAT Generator
Expose internal server/NVR ports to the public internet (DST-NAT) and eliminate local loopback timeouts using Hairpin NAT.
MikroTik QoS Priority and Anti-Lag Calculator
Prioritize WhatsApp calls, Zoom/Teams conferences, and gaming latency above bulk downloads using RouterOS v7 FQ-CoDel Queue Trees.
MTU and TCP MSS Clamping Calculator
Calculate optimal MTU sizes, TCP MSS clamping (IPv4/IPv6), and Don't Fragment ping payloads to resolve web page freezes over PPPoE and VPN tunnels.
MikroTik WireGuard VPN MTU & MSS Calculator
Deploy site-to-site WireGuard VPN on RouterOS v7 with automatic TCP MSS Clamping to prevent tunnel web page freezes and PMTUD black holes.
Proxmox ZFS & Hardware RAID Capacity Calculator
Calculate net usable Proxmox VE ZFS capacity, padding loss, slop space, 80% safe ceiling, ARC RAM, and zpool create CLI script.
RAID 0/1/5/6/10 Capacity Calculator
Calculate usable storage, parity loss, disk efficiency, and fault tolerance across RAID 0, 1, 5, 6, 10, 50, and 60 configurations.
Server UPS VA/kVA & Battery Runtime Calculator
Calculate server UPS capacity (kVA/VA), VRLA battery runtime (Ah), and 24/7 monthly electricity cost with 25% safety margin and power factor.
Server Room Cooling (BTU/hr & PK) & Rack Unit Calculator
Calculate server room heat dissipation in BTU/hr, convert to air conditioning PK ratings with 24/7 redundancy, and size server racks with airflow buffer.
VM Host Sizing (vCPU/RAM) & Backup Time Calculator
Calculate physical CPU cores, host RAM sizing with ZFS ARC cache buffer for Proxmox/ESXi, and network backup data transfer duration (RTO).
Wi-Fi Access Point & PoE Switch Capacity Calculator
Calculate Wi-Fi access point counts by coverage area and client capacity, PoE switch power budget, and minimum ISP internet line bandwidth.
Fiber Optic Loss Budget (dBm) & UTP Cable Box Calculator
Calculate GPON/EPON optical link loss budget (dBm), passive splitter loss, splicing, and estimate bulk UTP Ethernet cable boxes and RJ45s.
dBm to mW Converter & Free Space Path Loss (FSPL) Calculator
Convert RF power between dBm, milliwatts (mW), Watts, and dBW, and calculate Free Space Path Loss (FSPL) attenuation for wireless radio links.
Wireless PtP Link Budget & Fresnel Zone Calculator
Calculate received RX signal (dBm), free-space path loss FSPL, 60% Fresnel clearance, earth curvature bulge, and minimum triangle tower heights.
CCTV Lens Selection & Field of View Calculator
Calculate CCTV lens focal length recommendations (2.8mm, 4mm, 6mm, 12mm), field of view coverage width, and DORI pixel density per target distance.
CCTV DORI Distance Calculator (EN 62676-4)
Calculate EN 62676-4 CCTV DORI detection, observation, recognition, and facial identification reach distances based on sensor resolution and lens optics.
PoE Cable Voltage Drop Calculator
Calculate PoE Cat6, Cat5e, and CCA cable voltage drop, delivered terminal voltage, safe run distances, and night-time infrared reboot risks.
CCTV NVR Storage Capacity & Bandwidth Calculator
Calculate CCTV NVR storage capacity (TB), network ingress bandwidth Mbps, recording retention days, PoE budgets, and surveillance HDD recommendations.
CCTV Installation Material BOM Estimator
Estimate CCTV installation material Bill of Materials (BOM): Cat6 UTP cable boxes, RJ45 modular plugs, junction boxes, conduit pipes, and cable ties.
CCTV UPS & Battery Backup Calculator
Calculate CCTV camera, NVR, and PoE switch UPS apparent power (VA) and deep-cycle VRLA battery capacity (Ah) for power outage runtime.