Chemistry

Titration Calculator

Compute unknown concentration from titration. Free online Titration Calculator for chemistry — instant, accurate results, mobile-friendly, no signup needed.

[base] M
0.083333

Derivation

  1. ├── 01GivenVa = 25, Ma = 0.1, Vb = 30
  2. ├── 02Formulae.Va × e.Ma / e.Vb
  3. ├── 03Substitutee.25 × e.0.1 / e.30
  4. └── 04Compute [base] M0.083333
Did you know?

Ratios appear in the earliest Greek mathematics (Eudoxus, 4th century BCE) as a way to compare incommensurable lengths without a concept of irrational numbers.

§01What is

Understanding the Titration Calculator

The Titration Calculator computes [base] M from 3 inputs: volume acid (ml), known [acid] m, volume base (ml). Compute unknown concentration from titration.

Chemistry turns grams and moles into reactions. Getting the stoichiometry, dilutions, or concentrations right is the difference between a lab result you can trust and one you can’t reproduce. The Titration Calculator sits in that toolkit — it compute unknown concentration from titration. Enter your numbers above and the result updates instantly; every step of the math is shown in the Derivation panel so you can see exactly how the answer was reached.

§02The Formula

How it’s calculated

e.Va × e.Ma / e.Vb

Where

Va
Volume acid (mL)
Ma
Known [acid] M
Vb
Volume base (mL)
§03Practical Example

Step-by-step walkthrough

Scenario

Apply the formula to a realistic set of inputs: Volume acid (mL) = 25, Known [acid] M = 0.1, Volume base (mL) = 30.

  1. 01Start by noting the input — Volume acid (mL): 25.
  2. 02Start by noting the input — Known [acid] M: 0.1.
  3. 03Start by noting the input — Volume base (mL): 30.
  4. 04Substitute these values into the formula: e.Va × e.Ma / e.Vb
  5. 05Compute [base] M: the calculator returns 0.0833333.
  6. 06Cross-check the answer by opening the Derivation panel above — every line of math is shown so you can follow the computation end-to-end.
§04Variants

Common Titration Problems

The formula gets rearranged depending on which variable you need. Here are the patterns you’ll run into in the real world — find the one that matches your problem and follow the worked steps.

01 · PATTERN

Volume acid (mL) halved

Va = 12.5 (from 25)

Keep every other input at its default and halve the volume acid (ml). See how [base] m responds.

  1. 01New Volume acid (mL): 12.5
  2. 02Baseline [base] M: 0.0833333
  3. 03New [base] M: 0.0416667
  4. 04[base] M decreases by 50% → use this sensitivity to plan for real-world variation.
02 · PATTERN

Volume acid (mL) doubled

Va = 50 (from 25)

Keep every other input at its default and double the volume acid (ml). See how [base] m responds.

  1. 01New Volume acid (mL): 50
  2. 02Baseline [base] M: 0.0833333
  3. 03New [base] M: 0.166667
  4. 04[base] M increases by 100% → use this sensitivity to plan for real-world variation.
03 · PATTERN

Known [acid] M halved

Ma = 0.05 (from 0.1)

Keep every other input at its default and halve the known [acid] m. See how [base] m responds.

  1. 01New Known [acid] M: 0.05
  2. 02Baseline [base] M: 0.0833333
  3. 03New [base] M: 0.0416667
  4. 04[base] M decreases by 50% → use this sensitivity to plan for real-world variation.
04 · PATTERN

Known [acid] M doubled

Ma = 0.2 (from 0.1)

Keep every other input at its default and double the known [acid] m. See how [base] m responds.

  1. 01New Known [acid] M: 0.2
  2. 02Baseline [base] M: 0.0833333
  3. 03New [base] M: 0.166667
  4. 04[base] M increases by 100% → use this sensitivity to plan for real-world variation.
§05FAQ

Frequently asked questions

Yes. The calculator implements the standard formula as documented and returns exact floating-point results. No approximations are used unless noted in the formula.
Your feedback

How useful was this calculator?

Your ratings stay in your browser — they help us learn which tools people actually rely on.

Rate it
Was this helpful?