Density and Mass
dwttoct
Convert pennyweights (troy) (dwt) to metric carats (ct).
Factor1 dwt = 7.775869 ct
Converter
dwt
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ct
Rendered to 6 significant figures.
Formula
Formula
ct = dwt × 7.775869
Multiply any value in pennyweights (troy) by 7.775869 to obtain the value in metric carats.
Worked example
Convert 1 dwt to ct.
- 01Start with 1 dwt.
- 02Multiply by the conversion factor: 1 × 7.775869 = 7.77587 ct.
Result1 dwt = 7.77587 ct
Conversion table
| dwt | ct |
|---|---|
| 1 | 7.7759 |
| 2 | 15.552 |
| 5 | 38.879 |
| 10 | 77.759 |
| 20 | 155.52 |
| 50 | 388.79 |
| 100 | 777.59 |
| 200 | 1555.2 |
| 500 | 3887.9 |
| 1000 | 7775.9 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from dwt to ct?
1 dwt equals 7.775869 ct. To convert, multiply the value in pennyweights (troy) by 7.775869.
How do I convert 1 dwt to ct?
1 dwt = 7.77587 ct. For any value, multiply by 7.775869.
How do I convert ct back to dwt?
Divide by the same factor — or equivalently, multiply by 0.128603. So 1 ct = 0.128603 dwt.
When would I need to convert pennyweight (troy) to metric carat?
Mass conversions appear in material balances, reagent dosing, and reconciling vendor specifications across imperial/metric systems.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).