OneTaskChemistry Calculators
Periodic Table, Molar Mass, Molarity, Dilution, pH, Half-Life and Chemical Equation Balancer
Chemistry calculators for homework, the lab and the classroom. Look up any element on an interactive periodic table, find the molar mass of a formula, make up solutions and dilutions, work through the gas laws, find pH, balance equations and check your yield.
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Every Chemistry tool
Chemical Equation Balancer
Balance any chemical equation with whole-number coefficients.
NewCombined Gas Law Calculator
Solve P1V1/T1 = P2V2/T2 for any missing value.
NewDilution Calculator
Solve C1V1 = C2V2 and get the stock-and-water recipe.
NewEmpirical Formula Calculator
Empirical and molecular formula from percent or grams.
NewGrams To Moles Converter
Grams to moles and back for any formula.
NewHalf-Life Calculator
Amount left, decay time or half-life, isotopes built in.
NewIdeal Gas Law Calculator
Solve PV = nRT for any one unknown, in any common unit.
NewInteractive Periodic Table
All 118 elements, coloured by category, block or property.
NewMolar Mass Calculator
Molar mass of any formula, brackets and hydrates included.
NewMolarity Calculator
Molarity, mass to weigh and volume for any solution.
NewPercent Composition Calculator
Mass percent of each element in any formula.
NewPercent Yield Calculator
Percent yield and theoretical yield from a limiting reactant.
NewPH Calculator
pH, pOH and ion concentrations, weak acids and bases too.
What the chemistry tools cover
The periodic table gives the atomic mass, electron configuration, electronegativity and group of all 118 elements, coloured by category or by any property. The mole tools, molar mass, grams to moles, percent composition and empirical formula, all read the same formula parser, so brackets like Ca(OH)2 and hydrates like CuSO4·5H2O work everywhere. Solution tools cover molarity and C1V1 = C2V2 dilutions, the gas tools cover PV = nRT and the combined gas law, and the reaction tools balance equations and work out theoretical and percent yield. Atomic masses are the IUPAC standard values, rounded to the precision used in school and university courses, and every result shows the working so you can follow it by hand.
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