Covalent Radius Calculator
Explore covalent radii and predict bond lengths for different bond orders.
C
67 pm
O
57 pm
Predicted Bond Length
124 pm
(1.24 A)
Bond length = r(C) + r(O) = 67 + 57 = 124 pm
About Covalent Radii
Covalent radius is defined as half the distance between two identical atoms bonded together. Bond lengths can be predicted by adding the covalent radii of the bonded atoms. Multiple bonds (double, triple) are shorter due to increased electron density between nuclei.
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Chemistry: The Central Science
by Brown, LeMay, Bursten
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.