🧮 AI-Powered Precision

AI Calculator

Free AI-powered engineering calculator with 350+ precision tools across 13 calculator categories, 28 unit converters, scientific, financial, health & programmer modes. Export professional PDF reports.

350+ Calculators
13 Categories
28 Converters
📄 PDF Export
🔍
⚡ Electrical ⚙️ Mechanical 🏗️ Civil 🧪 Chemical 🔭 Physics 🔥 Fire & Safety ☀️ Solar & Energy 🔄 Converter 💰 Financial ❤️ Health 👨‍💻 Programmer 🔢 Math 📅 Date & Time
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What is AI Calculator?

AI Calculator (aionlinecalculator.com) is a free, browser-based suite of 350+ precision engineering calculators built on published engineering standards: IEC 60364 (cable sizing), IEC 60909 (short-circuit), NEC NFPA 70 (USA), BS 7671 (UK NICEIC), AS/NZS 3008 (Australia/NZ), ASME and ACI 318. Coverage: Electrical (49), Mechanical (32), Civil (41), Chemical (18), Physics (17) — plus 17 unit-converter categories, scientific, financial, health and programmer modes. All tools support professional PDF report export; no signup required.

Most-used calculators: Cable Sizing (IEC 60364, NEC, BS 7671, AS/NZS 3008), Chemical Dosing Rate, Ohm's Law, Voltage Drop, Short-Circuit (IEC 60909), BMI, Loan EMI.

Choose Your Calculator

⚡
Electrical Engineering
Ohm's Law, Power Factor, Cable Sizing (IEC 60364), Short Circuit (IEC 60909), Transformer, Voltage Drop, Motor Starting, Earth Fault, Lighting & Protection.
49 Calculators →
🔥
Fire & Safety
Fire Alarm Battery (NFPA 72), Sprinkler Hydraulic (NFPA 13), Fire Pump (NFPA 20), Hydrant Fire Flow (NFPA 291), NAC Voltage Drop, Detector Spacing & Strobe Candela.
7 Calculators →
☀️
Solar & Energy
Solar Panel Sizing, Battery Bank, Inverter Sizing, PV String, EV Charging Time & Circuit (NEC 625), Lumen/Lux & Lumen Method lighting.
8 Calculators →
⚙️
Mechanical Engineering
Torque, Gear Ratio, Belt Drive, Spring, Bearing Life, HVAC Load, Duct Sizing, Pipe Flow, Pump Sizing, Heat Exchangers, Thermodynamics & Fluid Mechanics.
32 Calculators →
🏗️
Civil Engineering
Beam Analysis, Concrete Mix Design, Soil Bearing Capacity, Retaining Wall, Slope Stability, Foundation Load, Column Design, Surveying & Roads.
41 Calculators →
🧪
Chemical Engineering
Molarity, pH, Dilution, Ideal Gas Law, Mass Balance, Heat of Reaction, Distillation, Transport Phenomena & Thermodynamics.
18 Calculators →
🔭
Physics
Projectile Motion, Simple Pendulum, Wave Properties, Kinetic Energy, Gravitational Force, Electric Field, Optics, Quantum & Relativity.
17 Calculators →
🔄
Unit Converter
Length, Weight, Temperature, Pressure, Energy, Power, Force, Torque, Viscosity, Flow Rate, Data, Cooking, Numeral Systems & more.
17 Categories • 200+ Units →
💰
Financial Calculator
Loan EMI, Compound Interest, SIP Returns, Savings Goal, Retirement Planning, Tip & Split, Discount Calculator with interactive charts.
15 Calculators →
❤️
Health Calculator
BMI, BMR (Mifflin-St Jeor), Body Fat % (US Navy), Daily Calorie Needs, Ideal Weight, Waist-to-Hip Ratio, Water Intake & Blood Pressure.
10+ Calculators →
👨‍💻
Programmer Calculator
Decimal, Hex, Octal & Binary conversions. Bitwise AND, OR, XOR, NOT, Left/Right Shift. Two's Complement, IEEE 754 & ASCII.
Full Programmer Suite →
🔢
Math Calculator
Percentage, Fractions, Average (Mean/Median/Mode), Standard Deviation & Ratio — with formulas and step-by-step results.
48 Calculators →
📅
Date & Time Calculator
Age, Date Difference, Add/Subtract Days, Business Days, Countdown, Leap Year, Day of Year, Week Number & Time Zone tools.
20 Calculators →