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Degree of Unsaturation Calculator — result sheet
Calculate the index of hydrogen deficiency from carbon, hydrogen, nitrogen, and halogen counts.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: DBE = C−H/2+N/2+1−X/2.
Oxygen and sulfur do not appear in this standard valence-count expression; halogens are counted with hydrogen.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Carbon atoms — minimum 0; maximum 1000000
- Hydrogen atoms — minimum 0; maximum 1000000
- Nitrogen atoms — minimum 0; maximum 1000000
- Halogen atoms — minimum 0; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Carbon atoms | 6 |
| Hydrogen atoms | 6 |
| Nitrogen atoms | 0 |
| Halogen atoms | 0 |
Degree of unsaturation = 4.
Assumptions and limits
- Atom counts are nonnegative whole numbers for a neutral closed-shell formula model.
- Halogens means the total count of F, Cl, Br, and I.
- Unusual valence, ions, radicals, metals, and structural assignment 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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