Fiber Loss Calculator
Calculate fiber, splice, connector, splitter and engineering losses for an optical link.
Open toolPRECISE · PRACTICAL · ENGINEER-READY
Turn complex engineering calculations into clear, reliable results
Professional browser-based calculators for optical networks, PON, IP planning, Wi-Fi, PoE power and field diagnostics. Built for fast design checks, troubleshooting and technical training.
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Optical Power Budget Calculator
Verify an optical link using transmit power, receiver sensitivity, optical penalty and ODN loss.
Open toolPON Splitter Loss Calculator
Plan multi-stage splitting and calculate total ratio, insertion loss and effective reach.
Open toolONU RX Power Diagnosis
Diagnose normal, weak-light, overload or possible no-signal conditions from measured power.
Open toolPON Maximum Distance Calculator
Calculate optical-budget reach, effective system reach and planned link margin.
Open toolOTDR Event Analyzer
Analyze multiple events and dual wavelengths to identify splices, connectors, bends, breaks, ghosts and dead-zone effects.
Open toolMTU & MSS Calculator
Calculate effective MTU, TCP MSS and fragmentation risk for PPPoE, GRE, VXLAN, MPLS, IPsec and WireGuard.
Open toolIP Subnet Calculator
Calculate IPv4, IPv6, CIDR, masks, broadcast ranges and host capacity, with VLSM planning.
Open toolBandwidth & Transfer Time Calculator
Calculate file transfer time, required link rate, concurrent-user capacity and sustained-rate data volume.
Open tool-48V Telecom Battery Runtime Calculator
Calculate telecom DC battery runtime, required Ah, parallel strings and constant-power current rise.
Open toolIPv6 & NAT Planning Calculator
Plan IPv6 prefixes, NAT44 capacity, deterministic CGNAT blocks, NAT64 and DNS64 addressing.
Open toolWi-Fi Coverage & Capacity Planner
Estimate bidirectional RF coverage, AP count, user capacity, throughput and channel reuse.
Open toolPoE Power Budget Calculator
Size PoE switches by watts, ports, cable loss, headroom and IEEE 802.3af/at/bt device limits.
Open toolSFP & QSFP Compatibility Checker
Check SFP, SFP28, QSFP and QSFP28 speed, lanes, fiber, wavelength and optical link budget.
Open toolWireless Link Budget Calculator
Calculate EIRP, FSPL, received signal, fade margin and Fresnel-zone clearance.
Open toolEthernet Cable PoE Voltage Drop Calculator
Calculate PoE cable resistance, voltage drop, remote voltage, current and power loss.
Open toolNetwork Rack Power & Cooling Calculator
Calculate rack power, current, cooling load, energy and cost.
Open toolVLAN & IP Subnet Capacity Planner
Plan VLAN count, IPv4 prefix, address capacity and growth headroom.
Open toolSwitch Uplink Bandwidth & Oversubscription Calculator
Size switch uplinks from access ports, utilization, concurrency and redundancy.
Open toolDNS TTL & Propagation Time Calculator
Estimate DNS cache expiry, propagation window and TTL change schedule.
Open toolMulti-Vendor ACL Generator & Validator
Generate, convert and validate IPv4 ACLs for Cisco IOS, Huawei VRP, H3C Comware and Juniper Junos.
Open toolNetwork Change Planner & MOP Generator
Parse running configuration, reconcile desired LAG/VLAN intent, generate minimal change and rollback commands, score risk, build a MOP and evaluate post-check evidence.
Open toolPUE & Data Center Energy Efficiency Analyzer
Analyze PUE, non-IT overhead, annual energy cost, target-PUE savings, WUE/CUE and monthly trends.
Open toolTelecom Solar Power & Battery Sizing Calculator
Size telecom solar PV, battery autonomy, energy balance, economics and emissions for grid-hybrid or off-grid sites.
Open toolGenerator Fuel Consumption & Runtime Calculator
Estimate telecom generator fuel burn, usable-tank runtime, outage fuel requirement, refills and battery-assisted operation from a manufacturer load curve.
Open toolTelecom Rectifier & DC Power System Sizing Calculator
Size telecom rectifier modules, battery recharge current, N+1/N+2 redundancy, failure headroom, AC input demand and expansion margin.
Open toolTelecom AC/DC Power Capacity & Breaker Sizing Calculator
Estimate telecom AC feeder, breaker, DC branch and conductor current from load, voltage, phase, power factor, efficiency, headroom and derating assumptions.
Open toolUPS Capacity & Battery Backup Runtime Calculator
Size UPS kW/kVA capacity, modular redundancy, battery autonomy, aging/temperature margin, recharge demand and bypass current.
Open toolData Center Cooling Load & Precision AC Capacity Calculator
Calculate data-center sensible heat, N+1 precision cooling capacity, BTU/h, refrigeration tons and airflow from IT and facility loads.
Open toolDC Plant Efficiency & Rectifier Load-Sharing Analyzer
Analyze telecom DC plant rectifier load sharing, module-current imbalance, redundancy, measured conversion efficiency and online-module utilization.
Open toolData Center Airflow & Hot-Aisle Containment Planner
Plan rack airflow, bypass and recirculation control, CRAH/CRAC airflow, sensible capacity, containment quality and N+1 resilience.
Open toolGenerator + UPS Transfer & Ride-Through Planner
Plan UPS ride-through, generator start/retry timing, ATS transfer, redundancy and critical-load continuity after utility failure.
Open toolTransmission Ring Optimization & Protection Risk Analyzer
Model ring traffic, simulate N-1 span failures, identify protection-state bottlenecks, score risk and compare targeted capacity upgrades.
Open toolOLT Dual-Uplink Capacity, Transport Channel & MSE Port Planner
Calculate OLT dual-uplink ports, transport channels, MSE ports and line cards, then verify single-side failure capacity and path diversity.
Open toolData Center Network Convergence & Fabric Capacity Planner
Plan Leaf-Spine and three-tier data center convergence, east-west/north-south demand, Spine N-1 resilience, bottlenecks and growth.
Open toolTOOL CATEGORIES
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Optical
Fiber-loss and optical-budget engineering.
PON planningSplitter and maximum-distance planning.
MaintenanceONU receive power and OTDR diagnosis.
IP networkingMTU, subnet, bandwidth and IPv6/NAT.
Wireless & Wi-FiWi-Fi coverage, capacity and channel reuse.
Telecom power-48V battery runtime and capacity.
SHARED ENGINEERING LIBRARY
Unified engineering reference library
Future tools use one source for optical classes, wavelength attenuation, splitter loss and default engineering assumptions.
An editable profile for lower-loss ODN designs.
The main default for the current 1:8 × 1:8, total 1:64 workflow.
Shared engineering values for 1310, 1490, 1550 and 1625 nm.
Shared references for splitters, splices and connectors.
This is an engineering reference library. Final projects must follow equipment specifications, enterprise rules, cable data and field measurements.
BUILT FOR ENGINEERING WORK
A dependable toolkit for repeatable calculations
35 TOOLSOne connected engineering toolkitOptical, PON, maintenance, IP, telecom power, IPv6/NAT, PoE, Wi-Fi planning and optical transceiver compatibility are integrated.