Featured chemistry tools
- Acid–base pH calculator (strong & weak acids and bases) | CalcBE
Solve pH and pOH for strong and weak acids and bases and for strong acid–strong base mixtures, with clear steps and shareable URLs.
- 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.
- Stoichiometry calculator (limiting reactant & percent yield) | CalcBE
From a balanced chemical equation, compute limiting reactant, theoretical yield, leftover amounts, and percent yield from moles or masses.
- 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.
- 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.
How to use this field
A hub for chemistry calculations: pH, solutions, equilibria, and reactions.
Check assumptions (temperature, approximations, concentration definitions) before trusting results.
How to choose (3 steps)
- Pick what you want to solve (pH, concentration, moles, equilibrium, etc.).
- Confirm units and definitions (mol/L, mass %, ppm, etc.).
- Read the assumptions, then verify results with the step-by-step output when available.
Common goals
- Compute pH for acids and bases
- Convert concentrations and amounts
All chemistry tools
- Acid–base titration curve calculator – pH vs volume with worked steps | CalcBE
Plot strong and weak acid–base titration curves, highlight buffer regions and equivalence points, and review the Henderson–Hasselbalch or hydrolysis steps behind each segment.
- Buffer pH (Henderson–Hasselbalch) with steps — design, additions, capacity | CalcBE
Compute buffer pH with the Henderson–Hasselbalch equation, design mixtures for a target pH, and model strong acid/base additions with buffer capacity and step-by-step logs.
- Catalyst loading calculator – mol%, ppm, eq to mass/volume | CalcBE
Convert catalyst loading between eq, mol% and ppm/ppb, calculate required mass or volume from a base amount, and share the setup by URL.
- Chemical Equation Balancer + Stoichiometry (with steps) | CalcBE
Chemical equation balancer with Gauss-Jordan steps. Compute limiting reagent, theoretical/percent yield, and balance redox half-reactions with shareable outputs.
- Colligative properties calculator — boiling, freezing, osmotic | CalcBE
Calculate boiling-point elevation, freezing-point depression, osmotic pressure, and 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.
- 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.
- Empirical formula calculator — molecular formula & steps | CalcBE
Empirical formula calculator: compute the empirical formula from percent composition (or grams), combustion data, or hydrates, then scale to the molecular formula using molar mass. Step-by-step working included.
- Multistep yield planner – overall yield & bottlenecks | CalcBE
Plan multi-step syntheses with per-step yields, compute overall yield forward or backward, highlight bottlenecks, and export tables or URLs.
- Partial pressure & gas mixing calculator – Dalton's law | CalcBE
Apply Dalton's law for gas mixtures, run two-tank isothermal mixing and wet-gas corrections, and compare ideal vs van der Waals pressure with clear logs, CSV export and shareable URLs.
- Reaction kinetics & half-life calculator | CalcBE
Online reaction kinetics calculator for 0th, 1st and 2nd order reactions. Compute half-lives and rate constants, fit data and analyse Arrhenius plots.
- Reagent table & reaction scale – export CSV/TSV | CalcBE
Create reagent tables from a base amount, convert equiv/mol%/ppm to mmol, grams, and mL, then export TSV/CSV or share a URL for lab notes.
- Significant Figures & Scientific Notation Calculator (with steps) | CalcBE
Count significant figures, convert to scientific notation, and apply rounding rules for + − × ÷ with step-by-step logs, CSV export, and textbook vs final rounding.
- 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 with step-by-step explanations.
- 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.
- Target yield calculator – back-calculate reagent table | CalcBE
Enter a reaction and target product mass to back-calculate base and reagent amounts, with auto-balancing, steps, and shareable tables.