Inputs
Use the sample size, titrant volume, and NaOH normality from your actual titration.
Winemaking
Titratable Acidity Calculator
Calculate titratable acidity from a simple NaOH titration and report the result as tartaric acid equivalent.
Turn titration readings into a cellar number
TA is one of the most useful lab numbers for winemaking decisions. This calculator helps turn a bench titration into g/L tartaric acid equivalent so the result can be compared with style targets and previous lab notes.
- Use a consistent endpoint method for comparable results.
- Record sample volume, NaOH normality, and titrant volume with the TA result.
- Compare TA with pH and taste rather than treating it as a single decision rule.
Titration notes
The calculation assumes the titrant normality is correct and that the endpoint has been reached consistently. If your NaOH has aged or absorbed CO2, standardize it before relying on the result.
For small samples, tiny reading errors can matter. Repeat the titration if the result would trigger a significant addition.
TA is useful because it is repeatable
A single TA reading is most useful when it is part of a record. The trend from crush to fermentation, malolactic conversion, cold stabilization, and bottling tells a better story than one number alone.
If two samples taste very different at the same TA, look at pH, residual sugar, tannin, alcohol, and dissolved CO2 before making a correction.
Before using the result on a full batch
Use this as planning arithmetic. Measure carefully, write down the assumptions, and make the smallest practical trial before a full cellar adjustment.
Best use
Converting a NaOH titration into g/L tartaric acid equivalent.
Do not skip
Titrant standardization, endpoint consistency, and duplicate runs for important decisions.
If the number looks surprisingly large or small, recheck every unit before acting. Most cellar mistakes start as unit mistakes.
How It Works
This calculator converts a NaOH titration into titratable acidity as tartaric acid equivalent.
- Enter wine sample volume in millilitres.
- Enter millilitres of NaOH used and its normality.
- Review TA in g/L, percent acid, and meq/L.
FAQ
Why report TA as tartaric acid?
Wine TA is commonly expressed as tartaric acid equivalent even though several acids are present.
Does dilution water change the result?
Adding distilled water to the titration flask does not change the amount of acid in the original wine sample.
Is TA the same as pH?
No. TA measures titratable acid quantity, while pH measures hydrogen ion activity.