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Titration Calculator

Calculate an unknown solution concentration or volume using titration data, molarity, volume, and stoichiometric reaction ratios.

Instant Calculation No Data Stored Mobile Friendly

Enter Titration Values

Select what you want to calculate and enter the known laboratory values.

Concentration in mol/L (M).
Enter the volume in mL.
Concentration in mol/L (M).
Enter the volume in mL.
Reaction Stoichiometric Ratio
:
For a 1:1 acid-base reaction, leave both coefficients as 1.
Calculated Result
0
Chemistry Calculator

What Is a Titration Calculator?

A Titration Calculator is a chemistry tool used to determine an unknown concentration or volume from titration measurements. Titration is commonly used in chemistry laboratories to determine the concentration of an unknown solution by reacting it with a solution of known concentration.

This calculator supports both simple 1:1 reactions and reactions with different stoichiometric coefficients. Enter the known molarity and volume values, select the unknown variable, and the calculator solves the titration relationship automatically.

Important: At the equivalence point, the reacting amounts follow the balanced chemical equation. This is why stoichiometric coefficients are important when the reaction is not 1:1.
Titration Formula

Formula Used by the Calculator

For two reacting solutions with stoichiometric coefficients a and b, the calculator uses the following relationship:

M₁ × V₁ / a = M₂ × V₂ / b M = molarity, V = volume, a and b = reaction coefficients

For a simple 1:1 reaction, both coefficients equal 1 and the equation simplifies to:

M₁V₁ = M₂V₂ Common formula for a 1:1 titration reaction
Calculation Process

How the Titration Calculator Works

01

Select the Unknown

Choose whether you want to calculate molarity or volume for Solution 1 or Solution 2.

02

Enter Known Values

Add the known concentration and volume measurements from your titration experiment.

03

Get the Result

The calculator applies the titration equation and displays the calculated molarity or volume instantly.

Variables

Understanding Titration Values

Symbol Meaning Typical Unit
M₁ Molarity of Solution 1 mol/L (M)
V₁ Volume of Solution 1 mL
M₂ Molarity of Solution 2 mol/L (M)
V₂ Volume of Solution 2 mL
a Stoichiometric coefficient for Solution 1 Ratio
b Stoichiometric coefficient for Solution 2 Ratio
Example

Titration Calculation Example

Suppose 25.00 mL of an unknown acid solution reacts completely with 20.00 mL of a 0.100 M base in a 1:1 reaction. The unknown acid molarity can be calculated using:

M₁ = (M₂ × V₂) / V₁ (0.100 × 20.00) ÷ 25.00 = 0.080 M

Therefore, the concentration of the unknown solution is 0.080 M.

Common Questions

Titration Calculator FAQs

What is titration?
Titration is a laboratory technique used to determine the concentration of an unknown solution by reacting it with a solution whose concentration is known.
What formula is used for titration?
For a simple 1:1 reaction, M₁V₁ = M₂V₂ is commonly used. For reactions with different stoichiometric ratios, the balanced chemical equation must also be considered.
Can this calculator find unknown molarity?
Yes. Select Unknown Molarity M₁ or M₂ and enter the other known concentration, both relevant volumes, and reaction coefficients.
Can I calculate an unknown titration volume?
Yes. Select V₁ or V₂ as the unknown variable. The calculator rearranges the equation automatically to calculate the required volume.
Do the volumes need to be in liters?
No. When both volumes use the same unit, such as mL, the common volume conversion factor cancels in the equation. This calculator displays volume results in mL.
What does a 1:1 titration ratio mean?
A 1:1 ratio means one mole of the first reactant reacts with one mole of the second reactant according to the balanced chemical equation.
Why are stoichiometric coefficients included?
Some reactions do not occur in a 1:1 mole ratio. The coefficients allow the calculator to account for the reaction ratio shown by the balanced chemical equation.
Educational Note: This calculator is intended for educational calculations. Laboratory results depend on correct measurements, balanced equations, endpoint detection, solution preparation, and experimental technique.