# AI Calculator Suite
> Production-grade engineering and AI tokenomics computational suite featuring 50 standalone, real-time calculation tools.

## System Architecture Overview
The AI Calculator Suite delivers high-precision, instant client-side calculation engines compliant with the National Electrical Code (NEC), ASHRAE thermodynamic specifications, Hazen-Williams fluid dynamics, National Motor Freight Classification (NMFC) guidelines, and modern AI tokenomics pricing structures.

## System & Legal Hub
- [Suite Directory Hub](https://aicalculator.in.net/index.html): Central directory featuring live search and filtering across all 50 tools.
- [Contact Desk](https://aicalculator.in.net/contact.html): Direct channel for technical assistance and enterprise licensing.
- [Feedback & Rating Portal](https://aicalculator.in.net/feedback.html): Dynamic tool rating and feature request submission form.
- [Privacy Policy](https://aicalculator.in.net/privacy.html): Client-side execution transparency and zero data retention statement.
- [Terms of Service](https://aicalculator.in.net/terms.html): Engineering usage disclaimers and licensing terms.

## Electrical Engineering Suite
- [Single-Phase Voltage Drop Calculator](https://aicalculator.in.net/electrical/single-phase-voltage-drop.html): Single-phase conductor sizing based on NEC Table 8. Formula: CM = (2 * K * I * D) / V_d.
- [Three-Phase AC Voltage Drop Analyst](https://aicalculator.in.net/electrical/three-phase-voltage-drop.html): Commercial 3-phase AC voltage drop analyzer. Formula: CM = (sqrt(3) * K * I * D) / V_d.
- [DC PV and Battery Efficiency Optimizer](https://aicalculator.in.net/electrical/dc-voltage-drop.html): Solar PV DC cable loss sizer targeting <= 2% loss. Formula: V_d = (2 * I * L * R) / 1000.
- [AWG Wire Gauge and Circular Mil Mapper](https://aicalculator.in.net/electrical/conductor-mil-selector.html): AWG 14 to 500 kcmil dimensional reference mapper. Formula: d_n = 0.005 * 92^((36-n)/39).
- [Copper vs. Aluminum Physical Properties Sizer](https://aicalculator.in.net/electrical/cu-al-comparison.html): Conductor weight, conductivity, and cost comparison (K_Cu = 12.9, K_Al = 21.2).
- [Dynamic Ohm's Law Matrix Solver](https://aicalculator.in.net/electrical/ohms-law-diagnostic.html): Dynamic solver for V, I, R, and P with overcurrent risk warnings.
- [Solar MPPT Thermal Voltage Margin Analyst](https://aicalculator.in.net/electrical/mppt-margin-checker.html): Temperature coefficient adjustments for PV string MPPT operating windows.
- [Combined Feeder and Branch Sizing Optimizer](https://aicalculator.in.net/electrical/combined-voltage-drop.html): Multi-tier voltage drop aggregator testing against the NEC 5% limit.
- [Transformer Impedance Short-Circuit Assessor](https://aicalculator.in.net/electrical/transformer-short-circuit.html): Short-circuit fault current and AIC rating estimator based on %Z impedance.
- [Generator Starting Current Drop Simulator](https://aicalculator.in.net/electrical/generator-starting-simulator.html): Motor locked-rotor starting voltage dip simulator for standby generators.
- [Solar PV System Payback & ROI Calculator](https://aicalculator.in.net/electrical/solar-payback-roi.html): Simple payback period and 25-year lifetime return estimator for PV installations.
- [Electric Vehicle Charging Time & Range Sizer](https://aicalculator.in.net/electrical/ev-charging-time-calculator.html): Charging duration sizer across Level 1, Level 2, and DC Fast Chargers.

## HVAC & Thermodynamic Suite
- [Thermal Envelope Gain & Loss Sizer](https://aicalculator.in.net/hvac/envelope-thermal-load.html): Space thermal load sizer incorporating wall area, climate constants, and insulation factors.
- [Equipment Cooling Tonnage Calculator](https://aicalculator.in.net/hvac/air-conditioner-tonnage-sizer.html): Converts total BTU/hr load directly to AC cooling tonnage. Formula: Tonnage = BTU/hr / 12000.
- [Multi-Zone Commercial Load Worksheet](https://aicalculator.in.net/hvac/commercial-load-worksheet.html): Commercial load sheet accounting for lighting density, occupants, and equipment.
- [Space Heating Heat Loss Estimator](https://aicalculator.in.net/hvac/space-heat-loss-estimator.html): Winter building heat loss estimator evaluating Delta T and air infiltration rates.
- [Sensible CFM Comfort Calculator](https://aicalculator.in.net/hvac/sensible-cooling-cfm.html): Sensible cooling airflow calculator with high-velocity noise warnings. Formula: CFM = Q_S / (1.08 * Delta T).
- [Latent Dehumidification Load Calculator](https://aicalculator.in.net/hvac/latent-heat-calculator.html): Moisture removal rate and latent heat gain analyzer. Formula: Q_L = 0.68 * CFM * Delta G.
- [Psychrometric Enthalpy Multi-Zone Sizer](https://aicalculator.in.net/hvac/enthalpy-total-load-optimizer.html): Psychrometric state analysis converting dry/wet bulb readings to total enthalpy load.
- [Assembly Wall Construction R-Value Compiler](https://aicalculator.in.net/hvac/wall-heat-transmission.html): Multi-layer wall construction sheathing and insulation compiler (R_total = Sum(R_i), U = 1/R).
- [Window Assembly Solar Heat Gain Estimator](https://aicalculator.in.net/hvac/glazing-heat-gain-sizer.html): Glazing SHGC and solar orientation heat flux estimator.
- [Exhaust Air and Ventilation Exchange Calculator](https://aicalculator.in.net/hvac/cleanroom-ventilation-exchange.html): Cleanroom and commercial space Air Changes per Hour (ACH) calculator. Formula: CFM = (Vol * ACH) / 60.

## Hydraulics & Fluid Dynamics Suite
- [Hazen-Williams Imperial Head Loss Analyst](https://aicalculator.in.net/hydraulics/hazen-williams-imperial.html): Friction head loss, pressure drop (PSI), and water velocity (ft/s) calculator.
- [Hazen-Williams Metric Head Loss Analyst](https://aicalculator.in.net/hydraulics/hazen-williams-metric.html): Metric pipeline head loss solver with inputs in mm, meters, and L/min.
- [Pipe Friction Sizing Diameter Finder](https://aicalculator.in.net/hydraulics/pipe-diameter-sizer.html): Rearranged Hazen-Williams solver to determine required inner pipe diameter from target flow.
- [Piping Allowable Flow Capacity Finder](https://aicalculator.in.net/hydraulics/pipe-flow-calculator.html): Maximum allowable GPM flow capacity solver given pressure loss constraints.
- [Roughness Coefficient Material Selector](https://aicalculator.in.net/hydraulics/c-factor-selector.html): Hazen-Williams C-factor database adjusted for pipeline age degradation.
- [Hazen-Williams vs. Darcy-Weisbach Contrast Engine](https://aicalculator.in.net/hydraulics/friction-formula-comparison.html): Comparative friction loss engine contrasting empirical vs. fluid mechanics models.
- [Reynolds Number Flow Regime Classifier](https://aicalculator.in.net/hydraulics/reynolds-number-evaluator.html): Flow regime classifier identifying Laminar (Re<2000), Transitional, or Turbulent (Re>4000) flow.
- [Fitting Equivalent Length Minor Losses Tool](https://aicalculator.in.net/hydraulics/minor-losses-sizer.html): Minor pressure loss compiler for elbows, tees, check valves, and pipe contractions.
- [Manning Gravity Open Channel Flow Estimator](https://aicalculator.in.net/hydraulics/gravity-manning-sizer.html): Stormwater culvert and gravity sewer flow velocity estimator using Manning's equation.
- [Closed Loop Water Supply Main Sizer](https://aicalculator.in.net/hydraulics/distribution-network-simulator.html): Water distribution main network simulator verifying residual supply pressure.
- [Data Center Power & PUE Efficiency Sizer](https://aicalculator.in.net/electrical/data-center-pue-calculator.html): Power Usage Effectiveness (PUE) and cooling power overhead calculator for IT data centers.

## Logistics & Supply Chain Suite
- [Packaging Cubic Volume & Inches-to-Feet Sizer](https://aicalculator.in.net/logistics/packaging-volume-sizer.html): Parcel volumetric calculator converting cubic inches to cubic feet and meters.
- [LTL Shipping Density Analyzer](https://aicalculator.in.net/logistics/ltl-density-calculator.html): Cargo density sizer (lbs/cu.ft) providing early warnings for weight re-classification fees.
- [NMFC Freight Class Classifier](https://aicalculator.in.net/logistics/nmfc-freight-classifier.html): Maps shipping density parameters directly to standard NMFC classes (Class 50 to 500).
- [Stowability, Handling, and Liability Penalty Assessor](https://aicalculator.in.net/logistics/ltl-stowability-penalty.html): Freight penalty calculator for non-stackable, hazardous, and overlength cargo.
- [Pallet Packing Density Space Optimizer](https://aicalculator.in.net/logistics/pallet-loading-optimizer.html): Standard 48" x 40" pallet stacking layout optimizer with overhang prevention alerts.
- [LTL Estimated Rate Sizer](https://aicalculator.in.net/logistics/ltl-freight-sizer.html): Base LTL freight shipping cost estimator incorporating density class and distance.
- [Dimensional Weight vs. Actual Weight Calculator](https://aicalculator.in.net/logistics/dim-weight-calculator.html): Carrier volumetric billing analyzer highlighting whether DIM or actual weight applies.

## Agentic AI Costing & Tokenomics Suite
- [Single-Turn Model API Inference Sizer](https://aicalculator.in.net/ai/single-turn-cost-estimator.html): API cost estimator comparing Claude Sonnet, GPT-4o, and Haiku token rates.
- [Multi-Agent Framework Coordination Evaluator](https://aicalculator.in.net/ai/multi-agent-cost-sizer.html): Evaluates multi-agent coordination overhead factors (CrewAI 1.5x vs. LangGraph 1.0x).
- [Correction Loop and Reflection Penalty Estimator](https://aicalculator.in.net/ai/agent-loop-sizer.html): Worst-case execution cost estimator for iterative agent reflection and tool retries.
- [Context Window Accumulation and Rot Calculator](https://aicalculator.in.net/ai/context-window-rot.html): Multi-turn history re-send token accumulation calculator modeling context cost escalation.
- [Cost-Driven Model Routing and Fallback Simulator](https://aicalculator.in.net/ai/model-routing-optimizer.html): API cost savings simulator evaluating cheap model classification and fallback escalation.
- [Vector RAG Embedding and Indexing Estimator](https://aicalculator.in.net/ai/rag-infrastructure-calculator.html): Vector database storage, indexing, and retrieval query cost calculator for RAG applications.
- [Runaway Loop Cost Alarm Planner](https://aicalculator.in.net/ai/runaway-loop-guardrail.html): Safety guardrail planner modeling trigger thresholds to prevent runaway API billing.
- [Human-in-the-Loop Hybrid Cost Analyst](https://aicalculator.in.net/ai/hitl-cost-estimator.html): Hybrid workflow cost analyzer balancing AI agent execution against human review time.
- [LLM GPU VRAM & Hardware Sizer](https://aicalculator.in.net/ai/gpu-vram-estimator.html): GPU VRAM memory sizer for LLM inference and fine-tuning across FP16, INT8, and INT4.
- [AI & Cloud Workload Carbon Footprint Estimator](https://aicalculator.in.net/ai/carbon-footprint-calculator.html): Carbon emissions estimator (kg CO2e) for AI model training and cloud cluster operations.