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Chemical Oxygen Demand Concentration Calculator — result sheet
Convert oxygen consumed by a sample into chemical oxygen demand concentration.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: COD concentration = oxygen mass/sample volume.
The result expresses the entered oxygen equivalent per litre without deciding a regulatory threshold or treatment outcome.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Oxygen consumed — mg; minimum 0; maximum 1000000000
- Sample volume — L; minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Oxygen consumed | 25 |
| Sample volume | 0.5 |
COD = 50 mg/L.
Assumptions and limits
- Oxygen mass is nonnegative milligrams and sample volume is positive litres.
- The sample is homogeneous and the measured oxygen equivalent is representative.
- Digestion method, blanks, interferences, regulatory limits, and treatment decisions are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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