Chemistry Calculators
Calculate moles, molarity, pH, and stoichiometry with 20 free chemistry calculators. Calculator Archive's chemistry calculators help students and professionals solve chemical equations, calculate concentrations, and understand reactions. Each calculator includes formula explanations and step-by-step
All Chemistry Calculators (20)
Ideal Gas Law Calculator
Solve the Ideal Gas Law equation PV = nRT. Calculate gas Pressure, Volume, Amount (moles), or Temperature with interactive step-by-step steps.
Molar Mass & Composition Calculator
Calculate the total molar mass (g/mol) of chemical formulas and evaluate mass percentage compositions of elements.
Specific Heat Capacity Calculator
Solve the specific heat capacity formula Q = mc�T for heat energy, mass, specific heat, or temperature changes.
Mole Calculator
Calculate chemical moles, mass in grams, or molecular weight using formulas and standard elemental weights.
pH Calculator
Solve pH, pOH, hydrogen ion [H+], or hydroxide ion [OH-] concentrations in solutions.
Molarity Calculator
Calculate solute molarity, solution volume, or required solute mass.
Dilution Calculator
Solve solution dilution formulas (C1V1 = C2V2) for concentrations and volumes.
Stoichiometry Calculator
Solve chemical reaction ratios and stoichiometric mass relations.
Percent Yield Calculator
Calculate the chemical reaction efficiency using theoretical and actual yields.
Solution Concentration Calculator
Solve solution concentration percentages by mass, volume, or mass/volume ratios.
Half-Life Calculator
Solve radioactive isotope decay curves, remaining quantities, and half-life durations.
Carbon Dating Calculator
Estimate organic artifact age based on remaining Carbon-14 isotope concentrations.
Generation Time Calculator
Calculate bacterial generation time from initial and final cell counts. Estimate doubling time, growth rate, and number of generations for microbial cultures.
Cell Dilution Calculator
Calculate cell dilution factors, required volumes, and serial dilution schemes. Use the C1V1 = C2V2 equation for accurate cell suspension and reagent dilutions.
Cell Doubling Time Calculator
Calculate cell doubling time from OD readings, cell counts, or confluence data. Estimate growth rates, population doubling levels, and culture expansion times for mammalian and microbial cells.
Annealing Temperature Calculator
Calculate optimal PCR annealing temperature (Ta) from primer sequences using Wallace, salt-adjusted, and nearest-neighbor Tm formulas. Includes GC content, primer length, and monovalent cation concentration adjustments.
DNA Concentration Calculator
Calculate DNA concentration from A260 spectrophotometer readings using Beer-Lambert law. Get purity ratios A260/A280, A260/A230, and total yield for dsDNA, ssDNA, and RNA.
Ligation Calculator
Calculate the optimal insert-to-vector mass ratio for DNA ligation reactions. Determine molar ratios, insert mass, and reaction setup for molecular cloning with T4 DNA ligase.
Log Reduction Calculator
Calculate log reduction value (LRV) and percentage kill for disinfection efficacy testing. Convert between LRV, percentage reduction, and survival fraction for microbiology.
Protein Concentration Calculator
Calculate protein concentration using UV absorbance (A280), Bradford, BCA, or standard curve methods. Includes Beer-Lambert law and extinction coefficient calculations.