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Newton's Second Law Calculator
Solve force, mass, or acceleration with unit-aware steps.
Open calculator →circuitsOhm's Law Calculator
Enter any two independent voltage, current, resistance, or power values to solve the complete DC resistor state; extra inputs are checked for consistency.
Open calculator →chemistryIdeal Gas Law Calculator
Solve pressure, volume, amount, or temperature using PV = nRT.
Open calculator →laboratoryDilution Calculator
Solve any term in C₁V₁ = C₂V₂ with compatible concentration and volume units.
Open calculator →mechanicsKinetic Energy Calculator
Use one six-mode workspace for angled work, kinetic energy, gravitational potential energy, power, mechanical-energy conservation, and efficiency; solve any supported variable.
Open calculator →mechanicsMomentum Calculator
Solve and audit one-dimensional two-body collisions: elastic, perfectly inelastic, custom restitution, or measured final velocities.
Open calculator →scienceDensity Calculator
Solve density, mass, or volume with automatic unit conversion.
Open calculator →circuitsElectric Power Calculator
Enter any two independent voltage, current, resistance, or power values to solve the complete DC resistor state; extra inputs are checked for consistency.
Open calculator →wavesWave Speed, Frequency and Wavelength
Solve v = fλ for wave speed, frequency, or wavelength.
Open calculator →geometryCircle Circumference Calculator
Calculate radius or circumference using C = 2πr.
Open calculator →mechanicsAverage Speed Calculator
Solve average speed, distance, or elapsed time.
Open calculator →mechanicsAcceleration Calculator
Solve any variable across all three constant-acceleration equations, find every non-negative time root, convert SI or common units, and inspect position and velocity plots.
Open calculator →mechanicsWork Calculator
Use one six-mode workspace for angled work, kinetic energy, gravitational potential energy, power, mechanical-energy conservation, and efficiency; solve any supported variable.
Open calculator →mechanicsGravitational Potential Energy Calculator
Use one six-mode workspace for angled work, kinetic energy, gravitational potential energy, power, mechanical-energy conservation, and efficiency; solve any supported variable.
Open calculator →mechanicsHooke's Law Calculator
Solve signed Hooke's law, elastic potential energy, and equivalent series or parallel spring systems.
Open calculator →mechanicsPressure, Force and Area Calculator
Solve pressure, normal force, or contact area.
Open calculator →mechanicsTorque Calculator
Solve arbitrary-angle torque, audit planar force and moment equilibrium, or calculate reactions for a simply supported beam with point loads.
Open calculator →mechanicsCentripetal Force Calculator
Convert linear speed, angular velocity, frequency, and period; calculate centripetal acceleration and force; solve an ideal frictionless banked curve in both directions.
Open calculator →geometryCircle Area Calculator
Calculate circle area from radius or radius from area.
Open calculator →geometryRectangle Area Calculator
Solve rectangle area, length, or width.
Open calculator →geometryTriangle Area Calculator
Solve triangle area, base, or perpendicular height.
Open calculator →geometryPythagorean Theorem Calculator
Find any side of a right triangle from the other two sides.
Open calculator →mathSlope Calculator
Calculate the slope between two Cartesian points.
Open calculator →circuitsVoltage Divider Calculator
Solve an unloaded two-resistor voltage divider.
Open calculator →circuitsLED Resistor Calculator
Calculate a series resistor from supply voltage, LED forward voltage, and target current.
Open calculator →circuitsSeries Resistance Calculator
Add two series resistors or solve either resistor value.
Open calculator →circuitsParallel Resistance Calculator
Calculate the equivalent resistance of two parallel resistors.
Open calculator →chemistryMolarity Calculator
Solve molarity, amount of solute, or solution volume.
Open calculator →statisticsZ-Score Calculator
Standardize a value using a population mean and standard deviation.
Open calculator →wavesFrequency and Period Calculator
Convert between wave frequency and period.
Open calculator →sciencePower, Energy and Time Calculator
Use one six-mode workspace for angled work, kinetic energy, gravitational potential energy, power, mechanical-energy conservation, and efficiency; solve any supported variable.
Open calculator →mathScientific Calculator
Evaluate scientific expressions with general, trigonometry, and logarithm keypads, selectable degree or radian angle mode, constants, and calculation history.
Open calculator →mathPercentage Calculator
Calculate a percentage of a value, determine what percent one value is of another, or measure percentage change.
Open calculator →mathFraction Calculator
Add, subtract, multiply, and divide exact fractions with a simplified result.
Open calculator →mathQuadratic Equation Solver
Solve ax² + bx + c = 0, including repeated and complex roots, with discriminant steps.
Open calculator →statisticsDescriptive Statistics Calculator
Calculate count, sum, mean, median, Q1, Q3, IQR, modes, range, population/sample variance, and standard deviation from pasted data.
Open calculator →mathMatrix Calculator
Add, subtract, multiply, and transpose matrices; calculate determinant, inverse, RREF, rank, or solve an augmented linear system.
Open calculator →chemistryChemical Equation Balancer
Balance common chemical equations by conserving each element with exact integer coefficients.
Open calculator →circuitsRC, RL and RLC Calculator
Analyze series RC, RL, and RLC circuits with complex impedance, phase, RMS current and component voltages, time constants or resonance metrics, analytic -3 dB cutoffs, and a logarithmic frequency sweep.
Open calculator →mathLinear Equation Solver
Solve linear equations with parentheses, fractions, decimals, and explicit no-solution or infinitely-many-solution states.
Open calculator →mathRatio and Proportion Calculator
Simplify ratios, find a missing proportional term, and calculate scale factors with optional unit labels.
Open calculator →math2D and 3D Vector Calculator
Calculate magnitude, unit vector, sum, difference, dot product, cross product, angle, and projection.
Open calculator →statisticsPermutation and Combination Calculator
Calculate factorials, permutations, combinations, and repeated selections exactly with large integers.
Open calculator →statisticsProbability Calculator
Calculate event unions, conditional probability, Bayes' theorem, binomial probabilities, and normal-distribution areas.
Open calculator →statisticsLinear Regression and Correlation Calculator
Paste x,y or CSV data to calculate slope, intercept, Pearson r, R², residuals, predictions, and a scatter plot.
Open calculator →chemistryMolar Mass and Formula Calculator
Parse chemical formulas, hydrates and parentheses; show element contributions and convert between mass and moles.
Open calculator →chemistryStrong Acid and Base pH Calculator
Calculate pH, pOH, hydrogen and hydroxide concentrations from strong acid/base concentration with water autoionization.
Open calculator →chemistryReaction Kinetics and Half-Life Calculator
Calculate zero-, first-, and second-order integrated rate laws or fit an order from concentration-time data.
Open calculator →chemistryChemical Stoichiometry Calculator
Balance a reaction and convert one reactant or product amount into moles, mass, gas volume, or particles for every species.
Open calculator →chemistryBuffer pH Calculator
Use Henderson–Hasselbalch for an acid/conjugate-base buffer, including strong acid/base addition and dilution.
Open calculator →chemistryAcid–Base Titration Calculator
Calculate pH at any titrant volume and generate a bounded titration curve for strong/strong and monoprotic weak/strong systems.
Open calculator →chemistryLimiting Reagent and Theoretical Yield
Identify the limiting reagent from all reactant amounts, calculate excess remaining, theoretical product and percent yield.
Open calculator →laboratoryDNA/RNA Concentration Calculator
Convert A260 to DNA/RNA concentration and total yield; report A260/A280 and A260/A230 purity ratios.
Open calculator →laboratoryPrimer Melting Temperature Calculator
Calculate DNA primer Tm by Wallace or SantaLucia nearest-neighbor thermodynamics with salt, Mg²⁺, dNTP and primer-concentration correction.
Open calculator →laboratoryCFU/mL Calculator
Combine replicate plates, dilution factors and plated volumes; flag countable ranges and report mean, SD and CV.
Open calculator →laboratoryHemocytometer Cell Count and Viability
Combine live/dead replicate chamber counts to calculate cells/mL, viability, total cells and replicate CV.
Open calculator →mechanicsFree Fall Calculator
Calculate fall time, distance, and impact velocity from elapsed time or fall height with configurable gravity and initial downward velocity.
Open calculator →mechanicsProjectile Motion Calculator
Resolve launch velocity, calculate flight time, maximum height, range, impact speed, any specified-time state, and a sampled trajectory from an elevated launch.
Open calculator →mechanicsUniversal Gravitation Calculator
Solve two-body gravitational force, either mass, or separation, and calculate field strength, circular-orbit speed and period, escape speed, and potential per unit mass.
Open calculator →mechanicsSimple Harmonic Motion Calculator
Calculate spring-oscillator or small-angle pendulum period, frequency, angular frequency, phase, instantaneous displacement, velocity, acceleration, energy, and a motion curve.
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