Titration Calculator
Unknown concentration from an acid-base titration.
Enter your values
Enter the titrant concentration in M.
Enter the titrant volume used in mL.
Enter the sample volume in mL.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Unknown concentration
- 0.098 M
- Moles of titrant used
- 0.00245 mol
- Sample volume
- 25 mL
Quick answer
C1V1 = C2V2 (adjusted for reaction stoichiometry).
MaVa = MbVb (1:1 stoichiometry)
At a glance
| What it does | Unknown concentration from an acid-base titration. |
|---|---|
| Category | Science |
| Inputs needed | Titrant concentration, Titrant volume used, Sample volume |
| Main output | Unknown concentration |
| Formula | MaVa = MbVb (1:1 stoichiometry) |
| Cost | Free — no sign-up, no download |
How to use the Titration Calculator
- 1Enter the known concentration of your titrant.
- 2Enter the volume of titrant used to reach the equivalence point (from the burette).
- 3Enter the sample volume to find its unknown concentration.
Inputs explained
- Titrant concentration(M)
- Enter the titrant concentration in M.
- Titrant volume used(mL)
- Enter the titrant volume used in mL.
- Sample volume(mL)
- Enter the sample volume in mL.
Worked example
Using the values the calculator loads with:
Inputs
- Titrant concentration0.1 M
- Titrant volume used24.5 mL
- Sample volume25 mL
Results
- Unknown concentration0.098 M
- Moles of titrant used0.00245 mol
- Sample volume25 mL
Frequently asked questions
What if stoichiometry isn't 1:1?
Multiply or divide the result by the mole ratio between acid and base from the balanced equation.
Why does the endpoint matter?
The indicator's colour change should closely match the true equivalence point for an accurate result.
What do I need to enter into the Titration Calculator?
Just 3 values: titrant concentration, titrant volume used, sample volume. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Titration Calculator work out the answer?
C1V1 = C2V2 (adjusted for reaction stoichiometry). It applies the formula MaVa = MbVb (1:1 stoichiometry) and shows the working so you can check each step by hand.
Is the Titration Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.