Calculate the pH or pOH of acids and bases, including strong and weak solutions.
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About pH

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic). Neutral is 7.

How This Calculator Works

This calculator uses the concentration and dissociation information to determine pH. Strong acids/bases fully dissociate, weak acids/bases partially dissociate using Ka values.

Advice

Always handle chemicals safely and wear protective equipment. Concentrated solutions can be dangerous. This tool is for educational purposes.

FAQs

What if Ka is unknown? For weak acids/bases, approximate using common values.
Can I calculate pOH? Yes, pOH = 14 - pH.
Is it exact? This is a theoretical estimate assuming ideal behavior.