Science & engineering calculators

A

• Acid-base titration curve and pH calculator
  Free acid-base titration calculator for strong and weak acids and bases. Compute pH at any point and generate titration curves with step-by-step explanations.
• Acid–base pH calculator (strong & weak acids and bases)
  Solve pH and pOH for strong and weak acids and bases and for strong acid–strong base mixtures, with clear steps and shareable URLs.

B

• Beer-Lambert law calculator and calibration curve (A = εlc)
  Free online Beer-Lambert law calculator for absorbance, concentration, molar absorptivity, path length, and calibration curves. Great for general chemistry and lab reports.

C

• Calorimetry calculator (specific heat, heat, final temperature)
  Free calorimetry calculator to find heat, specific heat, temperature change, and final equilibrium temperature when mixing two substances.
• Chemical Equation Balancer + Stoichiometry (with steps) | CalcBE
  Balance chemical equations with nullspace Gauss-Jordan steps, compute limiting reagent, theoretical and percent yield, and combine redox half-reactions with shareable outputs.
• Chemical equilibrium ICE table calculator (Kc, Kp)
  Calculate equilibrium concentrations and a full ICE table from Kc or Kp and initial conditions for a single chemical reaction. Useful for general chemistry and lab reports.
• Chemistry Calculators | CalcBE.com
  Chemistry calculators for pH, titration curves, kinetics, equilibrium, and solutions. Step-by-step and browser‑only.
• Circular motion & centripetal force calculator
  Free circular motion calculator for centripetal acceleration, centripetal force, angular speed, period, frequency, and ideal banked-curve angle.
• Colligative properties calculator – ΔTb, ΔTf and osmotic pressure | CalcBE
  Compute boiling-point elevation, freezing-point depression and osmotic pressure from solute and solvent data, or estimate molar mass from colligative measurements.
• Concentration & pH calculator – step-by-step chemistry working | CalcBE
  Calculate molarity, mass percent, M1V1 dilution, mixing, w/w→M, and strong or weak acid-base pH with 25 °C assumptions and a detailed step-by-step breakdown.

D

• Distance modulus & stellar magnitude calculator
  Compute distance, apparent magnitude, or absolute magnitude from the distance modulus m - M = 5 log10(d/10 pc), and see how brightness scales with distance using a simple 1/r^2 graph.

E

• Earthquake magnitude & energy comparison calculator
  Compare two earthquake magnitudes and compute the energy ratio using E2/E1 = 10^{1.5(M2 - M1)}, with intuitive explanations and a log-scale bar view.
• Electrochemical cell & Nernst equation calculator | CalcBE
  Compute standard cell potentials E°, standard ΔG°, equilibrium constants K, Nernst equation E under non-standard conditions, and concentration cell voltages with clear steps and shareable URLs.

H

• Hardy–Weinberg equilibrium and chi-square calculator
  Check Hardy–Weinberg equilibrium from genotype counts or allele frequencies, and compute the chi-square statistic and expected genotype frequencies.

I

• Ideal gas law calculator (PV = nRT & gas laws)
  Free ideal gas law calculator to solve PV = nRT, combined gas law problems, and gas density and molar mass with automatic unit conversions.

K

• Kepler's third law & orbital period calculator
  Compute orbital periods and semi-major axes from Kepler's third law, compare with Solar System planets on a log–log a–T diagram, and see a top-down orbit scale view.

L

• Lens and mirror equation & magnification calculator
  Free lens and mirror equation calculator for thin lenses and spherical mirrors. Compute image distance, magnification, and classify images as real or virtual, upright or inverted.

M

• Momentum & 1D collision calculator
  Free physics calculator for 1D collisions using conservation of momentum and coefficient of restitution. Compute final velocities and energy loss with step-by-step explanations.

O

• Ohm's law and simple DC circuit calculator
  Free calculator for Ohm's law and simple DC circuits. Solve voltage, current, resistance, power, and equivalent resistance in series or parallel.

P

• Physics Calculators | CalcBE.com
  Physics calculators for waves, optics, motion, gases, energy, and circuits. All tools run locally in your browser.
• Projectile motion calculator (time of flight, range, height)
  Free projectile motion calculator to find time of flight, horizontal range, maximum height, and required launch speed for a given target.

R

• Reaction kinetics calculator – rate laws, half-life and concentration vs time | CalcBE
  Online reaction kinetics calculator for 0th, 1st and 2nd order reactions. Compute half-lives and rate constants, fit data and analyse Arrhenius plots.
• Resistor Color Code Calculator (4-Band, 5-Band, 6-Band) | CalcBE
  Decode 4‑band, 5‑band, and 6‑band resistor colour codes. See nominal value, tolerance, and temperature coefficient, then copy a shareable result link.

S

• Science & Engineering Calculators | CalcBE.com
  Physics, chemistry, astronomy, and electronics calculators with clear steps. Filter tools, use the A–Z index, and save favourites for quick access.
• Significant Figures & Scientific Notation with Steps | CalcBE
  Count significant figures, normalize numbers to scientific notation, and apply half-up, half-even or away-from-zero rounding for + − × ÷ with side-by-side textbook and final rounding.
• Simple harmonic motion (SHM) calculator
  Free SHM calculator for a mass–spring oscillator and a small-angle pendulum. Compute period, angular frequency, max speed, acceleration, and energy with step-by-step formulas.
• Snell's law & total internal reflection calculator
  Interactive Snell's law calculator for refraction and critical angle, including total internal reflection checks and step-by-step explanation.
• Solubility product (Ksp) & precipitation calculator | CalcBE
  Compute molar solubility from Ksp, recover Ksp from measured solubility, test Q vs Ksp for precipitation, and explore simple fractional precipitation ranges.
• Solution recipe calculator – volume & concentration | CalcBE
  Generate lab-ready solution recipes from solids or stock solutions, including simple and serial dilutions, with clear step-by-step instructions and shareable URLs.
• Standing waves calculator: vibrating strings and air columns
  Free standing wave calculator for strings and tubes. Enter length, tension & density or sound speed to list mode frequencies, wavelengths, and steps instantly.
• Stoichiometry and limiting reactant calculator – moles, masses and percent yield | CalcBE
  Free stoichiometry calculator to find the limiting reactant, theoretical yield, remaining amounts, and percent yield from a balanced chemical equation.

T

• Thermodynamic process & PV diagram calculator (ideal gas)
  Free thermodynamic process calculator for ideal gases. Compute work, ΔU, and heat for isothermal, isobaric, isochoric, adiabatic, and polytropic processes, and see the PV diagram.

V

• Voltage divider & LC resonance calculator – gain & cutoff | CalcBE
  Design DC voltage dividers with loading and reverse solves, and compute LC resonance, reactance, Q and bandwidth with SI prefixes, E-series rounding and CSV export for lab or hobby projects.

W

• Work, energy & power calculator
  Physics calculator for work, kinetic and potential energy changes, and average power. See how force, displacement, mass, speed and height relate in one place.