Physics & Engineering Calculators
Solve common mechanics, motion, energy, matter, electricity, and machine calculations with transparent formulas, practical unit conversions, clear assumptions, and BMI-style result panels.
Showing all 12 Physics & Engineering calculators.
Physics & Engineering Calculator Tools
Force Calculator
Calculate force from mass and acceleration with SI or U.S. customary inputs, plus newtons and pounds-force results.
Acceleration Calculator
Calculate average acceleration from initial velocity, final velocity, and elapsed time with multiple common units.
Velocity Calculator
Calculate average velocity from displacement and time, with meter, foot, mile, second, minute, and hour conversions.
Kinetic Energy Calculator
Calculate translational kinetic energy from mass and speed, with joules and foot-pounds plus converted inputs.
Potential Energy Calculator
Calculate gravitational potential energy from mass, height, and local gravity for Earth, Moon, or Mars.
Momentum Calculator
Calculate linear momentum from mass and velocity with SI and U.S. customary input choices and converted results.
Density Calculator
Calculate density from mass and volume with common metric and U.S. customary units, including kg/m³, g/cm³, and lb/ft³.
Ohm's Law Calculator
Solve Ohm’s law for voltage, current, or resistance from the other two values, and calculate electrical power.
Electrical Power Calculator
Calculate electrical power from voltage, current, and optional power factor, with watts, kilowatts, and apparent power.
Projectile Motion Calculator
Calculate ideal projectile range, flight time, maximum height, and velocity components from speed, angle, and launch height.
Torque Calculator
Calculate torque from force, lever-arm distance, and angle, with newton-meters and pound-feet results.
Gear Ratio Calculator
Calculate gear ratio, driven RPM, ideal torque multiplication, and speed change from driving and driven gear teeth.
About Our Physics & Engineering Calculators
This category brings together practical tools for introductory physics, engineering coursework, technical checks, and everyday problem solving. Use the Force Calculator, the Projectile Motion Calculator, the Ohm’s Law Calculator, or the Gear Ratio Calculator to move from a known set of inputs to a transparent formula-based result.
How to use these calculators
Choose the calculator that matches the unknown quantity, enter measured or assumed values with the correct units, and review both the main result and its supporting breakdown. When a problem involves more than one relationship, use the result from one calculator as a cross-check or input for another only when the units and assumptions are compatible.
Why engineering estimates can differ
Textbook equations often model ideal conditions. Real results can differ because of friction, aerodynamic drag, temperature, material properties, measurement uncertainty, power losses, geometry, and system efficiency. Each tool therefore explains the formula and its assumptions rather than presenting the result as a professional design approval.
- Keep units consistent and use the provided selectors instead of typing unit symbols into numeric fields.
- Use signed values only where direction is part of the stated one-dimensional equation.
- Do not use ideal mechanical or electrical equations as a substitute for required safety factors, codes, or manufacturer data.
- Check cited NIST, NASA, and U.S. Department of Energy references when authoritative background is needed.
Physics & Engineering Calculator FAQs
Are the Physics & Engineering calculators free to use?
Yes. All 12 calculators run in your browser and are free to use without a paid account or sign-up.
Do these calculators support U.S. customary units?
Where the underlying equation commonly uses both systems, the calculator provides practical U.S. customary and metric unit choices and converts inputs internally before calculating.
Are the formulas based on standard physics equations?
Yes. The tools use standard introductory physics and engineering relationships and explain the formula, units, assumptions, and interpretation on each calculator page.
Can I copy, download, or print results?
Yes. The BMI-style result panels include Copy Result, Download Result, and Print controls after a valid calculation.
Do these calculators work on mobile devices?
Yes. The category page and calculator pages are responsive for phones, tablets, laptops, and desktop screens.
Are these tools suitable for engineering design approval?
No. They are educational and planning tools. Safety-critical, regulated, structural, electrical, aerospace, laboratory, and professional engineering work requires applicable standards, measurements, safety factors, and qualified review.