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Double Bond Equivalent Calculator
Degrees of unsaturation (double bond equivalents) from a molecular formula.
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Double bond equivalents
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Degrees of unsaturation (double bond equivalents) from a molecular formula.
Double Bond Equivalent Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: DBE = (2C + 2 + N – H – X) / 2.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Double Quick Guide
Typical values for reference.
| C | H | N | DBE |
|---|---|---|---|
| 6 | 6 | 0 | 4.0 |
| 2 | 6 | 0 | 0.0 |
| 6 | 12 | 0 | 1.0 |
| 7 | 9 | 1 | 4.0 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Double Bond Equivalent Calculator FAQ
Answers to common questions about this calculator.
The number of rings plus pi bonds.
No, divalent atoms are ignored.
4.
To narrow down structures.