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Diamond Weight Calculator
Estimate round diamond weight from two diameters and depth.
star Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
Estimated weight
Compare Your Options And Get Clear Answers
Estimate round diamond weight from two diameters and depth.
Diamond Weight Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Carat = 0.0061 x d2 x depth.
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
Diamond Quick Guide
Typical values for reference.
| Diameter mm | Depth mm | Weight | |
|---|---|---|---|
| 7 | 4.3 | 1.29 ct | |
| 6.5 | 4 | 1.03 ct | |
| 5.2 | 3.2 | 0.53 ct | |
| 8 | 4.9 | 1.91 ct | |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Diamond Weight Calculator FAQ
Answers to common questions about this calculator.
From its diameter and depth.
About 58 to 66 percent of the diameter.
No.
One hundredth of a carat.