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Acid–base titration curve simulator (with steps)

Visualise strong/weak acid–base titration curves, mark buffer regions and equivalence volumes, and trace every Henderson–Hasselbalch or hydrolysis calculation alongside the graph.

Model SA–SB, WA–SB, WB–SA, and polyprotic systems at 25 °C, export the sampled curve as CSV, and share reproducible URLs that capture your inputs for lessons or lab reports.

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Titration curve

Result

How it's calculated

    Representative points

    Example: 0.100 M acetic acid 25.0 mL titrated with 0.100 M NaOH (pKa = 4.76).

    FAQ

    How does the calculator classify each titration segment?

    The simulator checks the stoichiometric ratio n0 versus the titrant n, labels the region (initial acid or base, buffer, equivalence, or excess), and applies the appropriate model: strong-acid/strong-base, Henderson–Hasselbalch, or hydrolysis.

    Can I export the titration curve data?

    Yes. After plotting you can export the sampled volume–pH pairs as CSV, copy a shareable URL that replays the inputs, or download the curve for lab reports and teaching slides.

    How it's calculated