Alkalinity Calculator

Calculate total alkalinity and carbonate species in water samples

Titration Data

Sample Volume (mL)

Titrant Normality (N)

Total Titrant to pH 4.5 (mL)

Phenolphthalein Endpoint (mL) - Optional

125.0 mg/L as CaCO3

Moderate

Hydroxide (OH-)0.0 mg/L

Carbonate (CO3 2-)0.0 mg/L

Bicarbonate (HCO3-)125.0 mg/L

P-Alkalinity0.0 mg/L

Buffer Capacity2.500 meq/L

Milliequivalents2.50 meq/L

Acid Sensitive< 20 mg/L

Ideal Range75-150 mg/L

High Alkalinity> 300 mg/L

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MyCalcBuddy Editorial Team

This page is maintained as an educational calculator reference.

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Formula Source: Standard Mathematical References

by Various

ðŸ”„Last reviewed: May 2026

âœ“Formula checks are based on standard references and internal QA review.