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pH of Strong Acid + Strong Base Mixture Calculator

pH after mixing a strong acid with a strong base.

Compute the pH after mixing a volume of strong monoprotic acid with a volume of strong monoprotic base, by net moles and total volume. Identifies excess acid, excess base, or neutralization.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

M
L
M
L

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Net = M_a · V_a − M_b · V_b. If net > 0: pH = −log(net / (V_a + V_b)). If < 0: pOH = −log(|net| / total).

In depth

Compute the pH after mixing a volume of strong monoprotic acid with a volume of strong monoprotic base, by net moles and total volume. Identifies excess acid, excess base, or neutralization.