Engineering
Free engineering calculators for electrical circuits, Ohm's law, voltage dividers, and power calculations. Essential tools for engineers and students.
Ohm's Law & Power Calculator
Calculate voltage, current, resistance, and power
CFM Calculator
Calculate airflow in CFM for HVAC and ventilation
Horsepower Calculator
Calculate horsepower from torque, RPM, or force
Torque Calculator
Calculate torque, force, distance, and power conversion
Flow Rate Calculator
Calculate volumetric and mass flow rates for pipes and ducts
Beam Calculator
Calculate beam deflection, bending moment, shear force, and stress
Power Factor Calculator
Calculate power factor, real, reactive, and apparent power
Pulley System Calculator
Calculate mechanical advantage, force, and speed for pulley systems
Belt Length Calculator
Calculate belt length for open and crossed belt drives
Spring Constant Calculator
Calculate spring constant, force, displacement using Hooke's Law
Free Online Engineering Calculators
Professional-grade engineering calculators for electrical, mechanical, and civil engineering applications. Whether you're a student learning fundamentals or a practicing engineer, our tools provide accurate calculations with proper unit handling.
Why Use Our Engineering Calculators?
Electrical Engineering
Calculate resistance, power, voltage, current using Ohm's law and related formulas.
Mechanical Engineering
Compute torque, stress, strain, fluid dynamics, and thermodynamic properties.
Civil Engineering
Calculate beam loads, concrete mixtures, structural requirements, and more.
Unit Conversion
Seamlessly convert between metric and imperial units in all calculations.
Industry Standards
Calculations follow industry-standard formulas and safety factors.
Documentation
Export calculations for project documentation and engineering reports.
How to Use Engineering Calculators
Select the engineering discipline and specific calculator for your needs.
Enter all known parameters with proper units.
Review calculated results and verify they make physical sense.
Check the formulas used to ensure they match your application.
Apply appropriate safety factors for real-world applications.
Common Use Cases
Circuit Design
Calculate component values, power dissipation, and electrical properties for electronic circuits.
Structural Analysis
Determine loads, stresses, and deflections for beams, columns, and structures.
HVAC Calculations
Size heating and cooling systems, calculate heat transfer and airflow requirements.
Student Projects
Verify calculations for coursework, capstone projects, and engineering exams.
Frequently Asked Questions
Yes, for real-world applications always apply appropriate safety factors per relevant codes and standards. Our calculators provide theoretical values that should be adjusted for practical use.