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Whiz Tools

COD Calculator - Calculate Chemical Oxygen Demand from Titration Data

Calculate COD instantly from dichromate titration data. Free COD calculator for wastewater treatment, environmental monitoring, and water quality analysis. Uses standard APHA method.

Chemical Oxygen Demand (COD) Calculator

Calculate COD from dichromate titration data. Enter your blank and sample titrant volumes to determine oxygen demand in mg/L.

Input Parameters

mL
mL
N
mL

COD Formula

COD (mg/L) = ((Blank - Sample) × N × 8000) / Volume

Where:

  • Blank = Blank titrant volume (mL)
  • Sample = Sample titrant volume (mL)
  • N = Normality of titrant (N)
  • Volume = Sample volume (mL)
  • 8000 = Milliequivalent weight of oxygen × 1000 mL/L

COD Visualization

Calculate COD to see visualization
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Documentation

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