ChemLab Calculator

Laboratory Chemistry Calculations

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🔬 SCIENTIFIC CALCULATOR

Calculate Chemistry With Confidence.

A fast and practical collection of laboratory chemistry calculators for students, researchers and laboratory professionals.

CONCENTRATION

Molarity Calculator

Calculate molarity from the amount of solute and solution volume.

M = n / V

Amount of Solute n

Solution Volume V

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RESULT —

SOLUTION PREPARATION

Dilution Calculator

Calculate the volume required from a stock solution using the dilution equation.

M₁V₁ = M₂V₂

Stock Concentration M₁

Stock Volume V₁

Final Concentration M₂

Final Volume V₂

💡 Leave V₁ empty to calculate the stock volume required.

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RESULT —

AMOUNT OF SUBSTANCE

Moles & Mass Calculator

Calculate moles, mass, or molar mass using the relationship between them.

n = m / M

Mass m

Molar Mass M

g/mol

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RESULT —

CHEMICAL FORMULA

Molar Mass Calculator

Enter a chemical formula to calculate its molecular or molar mass.

g/mol

Chemical Formula Supported elements: H, C, N, O, Na, Cl, Ca, K, Mg, S, P, Fe, Cu and many more.

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RESULT —

SOLUTION CONCENTRATION

Percentage Solution

Calculate percentage concentration based on solute and solution quantities.

% = part / whole × 100

Solute Amount

Total Solution

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RESULT —

ACID & BASE

pH / pOH Calculator

Calculate pH from hydrogen ion concentration or pOH from hydroxide concentration.

pH = −log[H⁺]

Calculation Type

Concentration

mol/L

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RESULT —

GAS CALCULATIONS

Ideal Gas Law

Calculate pressure, volume, moles, or temperature using PV = nRT.

PV = nRT

Pressure P

Volume V

Moles n

Temperature T

💡 Leave exactly one field empty to calculate it. R = 0.082057 L·atm·mol⁻¹·K⁻¹

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RESULT —

CALORIMETRY

Heat Calculator

Calculate heat energy using mass, specific heat capacity, and temperature change.

q = mcΔT

Mass m

Specific Heat c

Initial Temperature T₁

Final Temperature T₂

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RESULT —

EQUIVALENT CONCENTRATION

Normality Calculator

Calculate normality from molarity and the n-factor.

N = M × n

Molarity M

n-Factor n

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RESULT —

TRACE CONCENTRATION

PPM Calculator

Calculate parts per million concentration from solute and solution mass.

ppm = part / whole × 10⁶

Solute Mass

Total Solution Mass

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RESULT —

Hydrogen

Atomic Number 1

Atomic Mass 1.008

Electronegativity 2.20

Electropositivity High

Oxidation States +1, −1

Physical State Gas