Instant cube volume from edge or diagonal, with unit conversion.

Cube Volume Calculator

Compute boiling temperature vs. altitude using Antoine or Clausius–Clapeyron

Boiling Point at Altitude Calculator

Calculate entropy changes for gases, heating, and phase changes

Entropy Calculator

Compute projectile drag and efficiency using BC models

Ballistic Coefficient (BC) Calculator

Instantly convert slope %, angle (°), and ratio (1 in N)

Slope Percentage Calculator

Calculate system degrees of freedom from components, phases, and reactions

Gibbs’ Phase Rule Calculator

Convert photon wavelength, frequency, and energy with steps and visuals

Wavelength–Frequency–Energy Converter

Estimate lattice energy using the Born–Landé model or Born–Haber cycle

Lattice Energy Calculator

Resolve forces, check equilibrium, and connect ΣF = 0 with ΣF = ma

Newton’s First Law Calculator

Solve force, mass, and acceleration using Newton’s Second Law

Newton’s Second Law Calculator

Analyze action–reaction force pairs between interacting objects

Newton’s Third Law Calculator

Calculate acceleration using velocity, time, force, and mass

Acceleration Calculator

Calculate power in watts from energy, force, or torque

Watt Calculator

Calculate electrical power (W) from voltage, current, or resistance

Electrical Power Calculator

Calculate pressure difference (ΔP) from surface tension and curvature

Young–Laplace Equation Calculator

Calculate resuspension volume, concentration, or mass for reagents and oligos

Resuspension Calculator

Calculate velocity using average, instantaneous, acceleration, and 2D vectors

Velocity Calculator

Solve 2×2 and 3×3 systems with steps, exact fractions & mini graph

System of Linear Equations Calculator

Compute 2D/3D cross products with steps, magnitude, area & visuals

Cross Product Calculator

Calculate empirical formulas from mass or percent composition with steps

Empirical Formula Calculator

Calculate momentum and impulse with unit conversion, vectors, and steps.

Momentum Calculator

Calculate volume of 3D shapes with unit conversion and steps.

Volume Calculator

Estimate protein solubility and aggregation risk from pH, pI, salt, and temperature

Protein Solubility Calculator

Calculate projectile motion: range, time of flight, max height, target solutions.

Projectile Motion Calculator

Calculate free-fall time, impact speed, and terminal velocity

Free Fall Calculator

Solve constant-acceleration motion using SUVAT equations

SUVAT Calculator

Solve V, I, R, and power with units and steps

Ohm’s Law Calculator

Solve calorimetry problems: heat, mixing, phase change, heating curves

Calorimetry Calculator

Calculate electrostatic force, charge, or distance between point charges

Coulomb’s Law Calculator

Solve refraction, critical angle, and total internal reflection fast

Snell’s Law Calculator

Calculate focal length, image/object distance, and magnification with ray visual

Thin Lens Equation Calculator

Calculate Doppler-shifted frequency for sound or redshift/blueshift for light

Doppler Effect Calculator

Calculate gas partial pressures using Dalton’s Law (plus “collected over water”)

Partial Pressure Calculator

Calculate kinetic energy, speed, and rolling motion with clear visuals

Kinetic Energy Calculator

Convert DNA mass, concentration, or molarity into copy number

DNA Copy Number Calculator

Calculate gravitational potential energy and changes with clear steps

Gravitational Potential Energy Calculator

Make physics problems simple — from motion to energy and beyond.

Use free physics calculators and converters to solve kinematics, energy, force, circuits, and thermodynamics problems. Get quick results with clear, step-by-step help.

Physics Calculators & Converters | Free Online Tools

Confused by motion, energy, or circuits? From kinematics to thermodynamics, our physics calculators and converters break problems down into easy steps - quick results, zero stress.

Physics Calculators & Converters

General Chemistry

Jules

Study the key concepts of Physics with descriptive videos, questions, and more

Physics

Patrick

General Biology

Jason

Financial Accounting

Brian

Dive deep into Psychology with videos, practice problems, and more.

Psychology

Microeconomics

The first in a two-course sequence introduces the basic structure and functions of the human body

Anatomy & Physiology

Bruce

College Algebra covers algebraic topics and skills necessary to succeed in college-level math

College Algebra

Organic Chemistry

Johnny

Genetics

Kylia

GOB Chemistry

Dive deep into General, Organic, and Biological Chemistry with videos, practice problems, and more.

Intro to Chemistry

Microbiology

Cell Biology

Analytical Chemistry

Study topics incliding trogonometric functions, identities and equations, solutions of triangles, complex numbers, and other topics as time permits

Trigonometry

Callie

Learn the toughest concepts covered in Precalculus with step-by-step video tutorials and practice problems by world-class tutors

Precalculus

Nick

Learn the toughest concepts covered in Calculus with step-by-step video tutorials and practice problems by world-class tutors

Calculus

Learn the toughest concepts covered in Business Calculus with step-by-step video tutorials and practice problems by world-class tutors

Business Calculus

Learn the toughest concepts covered in Business Statistics with step-by-step video tutorials and practice problems by world-class tutors

Business Statistics

Learn the toughest concepts covered in Statistics with step-by-step video tutorials and practice problems by world-class tutors

Statistics

Biochemistry

Macroeconomics

Dive deep into Personal Health with videos, practice problems, and more.

Personal Health

Dive deep into Nutrition with videos, practice problems, and more.

Nutrition

Dive deep into Medical Terminology with videos, practice problems, and more.

Medical Terminology

Dive deep into Sociology with videos, practice problems, and more.

Sociology

Hannah

Dive deep into Beginning Algebra with videos, practice problems, and more.

Beginning Algebra

Dive deep into Intermediate Algebra with videos, practice problems, and more.

Intermediate Algebra

Dive deep into Beginning & Intermediate Algebra with videos, practice problems, and more.

Beginning & Intermediate Algebra

My Courses

College Courses

Professional Courses

Chemistry

Biology

Math

Social Sciences

Health Sciences

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Dive deep into Python with videos and more.

Introduction to Python

Arianne Dee

Agile Project and Product Management

Agile & Product Management

Mariya Breyther

Introduction to Microsoft Power BI

Microsoft Power BI

Chris Sorensen

Data Analysis Fundamentals with Excel

Data Analysis - Excel

Chris Sorensen & Ammul Shergill

Getting Started with  and Cryptocurrency

Introduction to Blockchain

George Levy

Learn Enough HTML, CSS and Layout to be Dangerous

HTML, CSS & Layout

Lee Donahoe & Michael Hartl

Learn Enough JavaScript to be Dangerous: A Tutorial Introduction to Programming with JavaScript

Introduction to JavaScript

Michael Hartl

R Programming

Jared P. Lander

Digital Marketing Analytics Beyond Advertising

Digital Marketing

Mike Moran

Project Management

Jeffrey K. Pinto

AI in Marketing

Product & Marketing

Programming

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