Free Online Engineering Calculator Tools
Professional-grade tools for Mechanical, Electrical, and Civil engineering, plus all types of unit conversion. Fast, precise, and 100% free.
What is EasyEngCalc?
EasyEngCalc is a free online engineering calculator platform designed for mechanical, electrical, civil engineers, students and technicians. Every tool is built around industry-standard formulas so you can trust the results — whether you're designing a gear train, sizing a beam or analysing a circuit.
Industry-standard formulas
All calculations are based on ISO, AGMA, ASME and other recognised engineering standards.
Instant, no-login results
Enter your parameters and get results immediately — no account, no subscription required.
Multi-discipline coverage
30+ calculators spanning mechanical design, thermal & fluid, machining, electrical circuits and more.
Mobile-friendly
Use EasyEngCalc on the factory floor, in the lab or at your desk — fully responsive on any device.
Browse by Domain
4 engineering disciplines, dozens of tools
Mechanical Engineering
5 categories · 37 tools
From gear ratios and bearing life to beam deflection and Reynolds number — our mechanical engineering calculators cover design, strength, thermal and machining calculations used daily by engineers and students.
Electrical Engineering
1 categories · 7 tools
Solve circuit analysis problems, apply Ohm's law, and calculate power, voltage and current across resistor networks with precision.
Civil Engineering
1 categories · 3 tools
Statics calculators for civil engineering students and structural design professionals — covering force composition, moment and couple moment calculation, and force equilibrium analysis.
Unit Conversion
6 categories · 29 tools
Instantly convert between SI and imperial engineering units — force, pressure, torque, length, temperature and more. No formula lookup required.
Popular Calculators
Gear Ratio
Mechanical Design
Gear Module & Pitch
Mechanical Design
Bearing Life (L10)
Mechanical Design
Shaft/Hole Tolerance
Mechanical Design
Normal & Shear Stress
Strength of Materials
Strain & Poisson''s Ratio
Strength of Materials
Shaft Torsion Analysis
Strength of Materials
Beam Support Reaction
Strength of Materials
Cantilever — Concentrated Load
Strength of Materials
Simply Supported Beam — Concentrated Load(s)
Strength of Materials
Bending Stress
Strength of Materials
Cutting Speed & RPM
Machining
Ohm''s Law
Circuit Analysis
Motor Rated Torque
Circuit Analysis
Joule''s Law
Circuit Analysis
Equivalent Resistance
Circuit Analysis
Moment Calculator
Statics & Force Analysis
Force Equilibrium Calculator
Statics & Force Analysis
Length Converter
Basic Physical Quantities
Mass Converter
Basic Physical Quantities
Force Converter
Mechanics & Strength
Speed Converter
Dynamics & Motion
Temperature Converter
Energy & Refrigeration
Flow Rate Converter
Fluid & Chemical
Time Converter
Time & Computer