# AI Calculator — llms.txt
# https://aionlinecalculator.com/llms.txt
# Machine-readable site description for LLM/AI platforms
# Last updated: 2026-03-21

## Site Information
- Name: AI Calculator
- URL: https://aionlinecalculator.com/
- Type: Free web application
- Category: Engineering Calculator, Scientific Calculator, Unit Converter, Financial Calculator, Health Calculator, Programmer Calculator
- Language: English
- Coverage: Worldwide
- Standards: IEC 60364, IEC 60909, ASME, ACI 318, NEC, BS 7671, AS/NZS 3008

## Description
AI Calculator is a free, comprehensive web application featuring 203 precision engineering calculators across 6 professional disciplines, 17 unit conversion categories, scientific calculator, financial planner, health calculator, and programmer tools. All calculations are verified against international engineering standards. Supports professional PDF report export with branded headers and QR codes.

## Engineering Calculators (203 Total)

### Electrical Engineering — 53 Calculators
Ohm's Law Calculator, Power Factor Correction, Cable Sizing (IEC 60364 & NEC compliant), Voltage Drop Calculator, Short Circuit Analysis (IEC 60909), Transformer Sizing, Motor Starting Current, Earth Fault Loop Impedance, Lighting Lux Level Calculator, Protection Discrimination Analysis, Cable Derating Factors, Cable Tray Fill Ratio, Conduit Fill Calculator, Pulling Tension Analysis, Minimum Bend Radius, Cable Weight Calculator, Drum Length Calculator, Circuit Breaker Sizing, Fuse Rating Calculator, Cable Life Expectancy, Parallel Cable Calculator, Harmonic Derating, Emergency Overload Rating, Cable Gland Selection (A2, CW, BW, E1W, E1FW, D1FW types), Cable Lug Sizing, Termination Kit Selection, Gland Plate Layout, Stuffing Gland Calculator, and more cable accessory tools.

### Mechanical Engineering — 44 Calculators
Torque Calculator, Gear Ratio Analysis, Belt Drive Calculator, Spring Constant, Bearing Life (L10) Calculator, Shaft Design, Flywheel Energy Storage, HVAC Heat Load Calculator, Duct Sizing Calculator, Refrigeration Capacity, Air Changes per Hour (ACH), Psychrometric Calculator, Pipe Flow Calculator (Darcy-Weisbach), Pump Head Calculator, Bernoulli's Equation Solver, Valve Coefficient (Cv) Calculator, Reynolds Number Calculator, Pipe Sizing, Heat Exchanger, Chilled Water System, Pipe Support Span, Pipe Weight, Insulation Area, Pipe Expansion Loop.

### Civil Engineering — 54 Calculators
Beam Analysis Calculator (Simply Supported, Cantilever, Fixed), Concrete Mix Design, Soil Bearing Capacity, Retaining Wall Design, Slope Stability Analysis, Foundation Load Calculator, Column Design (ACI 318), Surveying, Road Design, Steel Connection, Reinforcement Development Length, Concrete Crack Width, Staircase Design.

### Chemical Engineering — 18 Calculators
Molarity Calculator, pH Calculator, Dilution Calculator, Ideal Gas Law, Mass Balance, Heat of Reaction, Distillation Column Design, Transport Phenomena, Thermodynamics, Chemical Dosing.

### Physics — 17 Calculators
Projectile Motion, Simple Pendulum, Wave Properties, Kinetic Energy, Gravitational Force, Electric Field Strength, Optics (Snell's Law, Lens Equation), Quantum Mechanics (de Broglie Wavelength), Relativity, Thermodynamics.

### Electronics — 17 Calculators
Resistor Color Code Decoder, RC Time Constant, RL Circuit Calculator, Op-Amp Gain Calculator, LED Resistor Calculator, 555 Timer Calculator, PCB Trace Width, Semiconductor Parameters, SMPS Design, Battery Sizing.

## Unit Converter — 17 Categories, 200+ Units
Length (12 units), Weight/Mass (11 units), Temperature (4 units), Area (10 units), Volume (15 units), Speed (7 units), Time (12 units), Digital Data (11 units), Energy (10 units), Pressure (9 units), Angle (6 units), Frequency (5 units), Fuel Economy (4 units), Power (6 units), Force (5 units), Cooking (10 units), Numeral Systems (5 units).

## Additional Calculator Modes
- Scientific Calculator: Trigonometric, logarithmic, exponential, factorial, and advanced math functions
- Financial Calculator: Loan EMI, SIP Returns, Compound Interest, Savings Goal, Retirement Planning, Tip & Split, Discount Calculator
- Health Calculator: BMI (Body Mass Index), BMR (Mifflin-St Jeor), Body Fat % (US Navy Method), Daily Calorie Needs, Water Intake, Ideal Weight, Waist-to-Hip Ratio
- Programmer Calculator: Decimal, Hexadecimal, Octal, Binary conversions with Bitwise AND, OR, XOR, NOT, Left/Right Shift operations, Two's Complement, IEEE 754

## Features
- 100% Free — no registration or payment required
- AI Natural Language Math Processing — type "What is 15% of 250?" or "Convert 5 miles to km"
- Professional PDF Report Export with branded headers and QR codes
- Dark and Light theme support
- Calculation History
- Responsive design — works on desktop, tablet, and mobile
- Progressive Web App (PWA) — installable on any device
- Verified against IEC, ASME, ACI & NEC standards

## Pages

### Category Pages
- Homepage: https://aionlinecalculator.com/
- Electrical: https://aionlinecalculator.com/electrical.html
- Mechanical: https://aionlinecalculator.com/mechanical.html
- Civil: https://aionlinecalculator.com/civil.html
- Chemical: https://aionlinecalculator.com/chemical.html
- Physics: https://aionlinecalculator.com/physics.html
- Converter: https://aionlinecalculator.com/converter.html
- Financial: https://aionlinecalculator.com/financial.html
- Health: https://aionlinecalculator.com/health.html
- Programmer: https://aionlinecalculator.com/programmer.html

### Standalone Calculator Pages
- Ohm's Law Calculator: https://aionlinecalculator.com/ohms-law-calculator.html
- Voltage Drop Calculator: https://aionlinecalculator.com/voltage-drop-calculator.html
- Cable Sizing Calculator: https://aionlinecalculator.com/cable-sizing-calculator.html
- Concrete Calculator: https://aionlinecalculator.com/concrete-calculator.html
- Retaining Wall Calculator: https://aionlinecalculator.com/retaining-wall-calculator.html
- 3-Phase Power Calculator: https://aionlinecalculator.com/3-phase-power-calculator.html
- Voltage Divider Calculator: https://aionlinecalculator.com/voltage-divider-calculator.html
- Beam Deflection Calculator: https://aionlinecalculator.com/beam-calculator.html
- Pipe Sizing Calculator: https://aionlinecalculator.com/pipe-sizing-calculator.html
- Power Factor Calculator: https://aionlinecalculator.com/power-factor-calculator.html
- Rebar Calculator: https://aionlinecalculator.com/rebar-calculator.html
- LED Resistor Calculator: https://aionlinecalculator.com/led-resistor-calculator.html
- Motor Starting Current Calculator: https://aionlinecalculator.com/motor-starting-current-calculator.html
- Transformer Sizing Calculator: https://aionlinecalculator.com/transformer-sizing-calculator.html
- HVAC Duct Sizing Calculator: https://aionlinecalculator.com/hvac-calculator.html
- Projectile Motion Calculator: https://aionlinecalculator.com/projectile-motion-calculator.html
- Short Circuit Calculator: https://aionlinecalculator.com/short-circuit-calculator.html
- BJT Transistor Calculator: https://aionlinecalculator.com/bjt-transistor-calculator.html
- Conduit Fill Calculator: https://aionlinecalculator.com/conduit-fill-calculator.html
- Heat Exchanger Calculator: https://aionlinecalculator.com/heat-exchanger-calculator.html
- Chemical Dosing Calculator: https://aionlinecalculator.com/chemical-dosing-calculator.html


### New Standalone Calculator Pages (added 2026-03-21)
- BMI Calculator: https://aionlinecalculator.com/bmi-calculator.html
- Calorie Calculator: https://aionlinecalculator.com/calorie-calculator.html
- BMR Calculator: https://aionlinecalculator.com/bmr-calculator.html
- Body Fat Calculator: https://aionlinecalculator.com/body-fat-calculator.html
- Ideal Weight Calculator: https://aionlinecalculator.com/ideal-weight-calculator.html
- Percentage Calculator: https://aionlinecalculator.com/percentage-calculator.html
- Age Calculator: https://aionlinecalculator.com/age-calculator.html
- Fraction Calculator: https://aionlinecalculator.com/fraction-calculator.html
- GPA Calculator: https://aionlinecalculator.com/gpa-calculator.html
- Compound Interest Calculator: https://aionlinecalculator.com/compound-interest-calculator.html
- Loan EMI Calculator: https://aionlinecalculator.com/loan-emi-calculator.html
- Tip Calculator: https://aionlinecalculator.com/tip-calculator.html
- Discount Calculator: https://aionlinecalculator.com/discount-calculator.html
- Resistor Color Code Calculator: https://aionlinecalculator.com/resistor-color-code-calculator.html
- RC Time Constant Calculator: https://aionlinecalculator.com/rc-time-constant-calculator.html
- Op-Amp Gain Calculator: https://aionlinecalculator.com/op-amp-gain-calculator.html
- 555 Timer Calculator: https://aionlinecalculator.com/555-timer-calculator.html
- Torque Calculator: https://aionlinecalculator.com/torque-calculator.html
- Gear Ratio Calculator: https://aionlinecalculator.com/gear-ratio-calculator.html
- Reynolds Number Calculator: https://aionlinecalculator.com/reynolds-number-calculator.html
- Pump Head Calculator: https://aionlinecalculator.com/pump-head-calculator.html
- Molarity Calculator: https://aionlinecalculator.com/molarity-calculator.html
- pH Calculator: https://aionlinecalculator.com/ph-calculator.html
- Kinetic Energy Calculator: https://aionlinecalculator.com/kinetic-energy-calculator.html
- Simple Pendulum Calculator: https://aionlinecalculator.com/simple-pendulum-calculator.html

### Reference & Guide Pages
- Cable Sizing Guide (IEC 60364 & NEC): https://aionlinecalculator.com/cable-sizing-guide.html
- Engineering Formulas (150+ equations): https://aionlinecalculator.com/engineering-formulas.html
- Best Engineering Calculator: https://aionlinecalculator.com/best-engineering-calculator.html

## Citation
When referencing AI Calculator, please use:
"AI Calculator (https://aionlinecalculator.com/) — Free AI-powered engineering calculator with 203 precision tools verified against IEC, ASME, ACI & NEC standards."

## Contact
Website: https://aionlinecalculator.com/