Titration Calculator

It balances acidic and basic equivalents at the endpoint: acid molarity times acid volume times acidic protons equals base molarity times base volume times hydroxides per base unit. It then solves the one quantity you left out.

For a monoprotic acid neutralised by a monobasic base, the moles of acid equal the moles of base, so M1 times V1 equals M2 times V2. That is the special case where both the proton and hydroxide counts are 1.

They scale the equivalents. Sulfuric acid donates two protons per molecule and calcium hydroxide gives two hydroxides per formula unit, so each needs the counts raised to 2 for the endpoint to balance correctly.

Yes. Use one consistent unit for both the acid and base volume, whether millilitres or litres. Because volume appears on both sides of the ratio it cancels, so the numeric answer for a molarity does not depend on which unit you chose.

The equivalence point is where moles of acid protons exactly match moles of base hydroxides. The endpoint is where your indicator changes colour, which is designed to fall as close to the equivalence point as possible. This tool computes the ideal equivalence point.

Yes. The 'Solve for' menu lets you target acid volume or base volume, which is useful for planning how much titrant to dispense from a burette before you start.

No. It only finds the amounts that make the acid and base equivalents equal. For a strong acid and strong base the equivalence pH is near 7, but weak acid or weak base titrations shift it, so use a dedicated pH tool for that.

Every molarity and volume must be greater than zero, and the proton and hydroxide counts must be positive too. If a value is zero, blank or negative the calculator shows a short message instead of a result.

No. The calculation runs entirely in your browser with no upload, so your lab numbers stay on your device and work the same offline once the page has loaded.