Density and Mass
dwttot
Convert pennyweights (troy) (dwt) to metric tonnes (t).
Factor1 dwt = 1.555174e-6 t
Converter
dwt
Accepts numbers or expressions, e.g. 150 + 14.7
Result
t
Rendered to 6 significant figures.
Formula
Formula
t = dwt × 1.555174e-6
Multiply any value in pennyweights (troy) by 1.555174e-6 to obtain the value in metric tonnes.
Worked example
Convert 1.00000e+6 dwt to t.
- 01Start with 1.00000e+6 dwt.
- 02Multiply by the conversion factor: 1.00000e+6 × 1.555174e-6 = 1.55517 t.
Result1.00000e+6 dwt = 1.55517 t
Conversion table
| dwt | t |
|---|---|
| 1 | 1.5552e-6 |
| 2 | 3.1103e-6 |
| 5 | 7.7759e-6 |
| 10 | 1.5552e-5 |
| 20 | 3.1103e-5 |
| 50 | 7.7759e-5 |
| 100 | 0.00015552 |
| 200 | 0.00031103 |
| 500 | 0.00077759 |
| 1000 | 0.0015552 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from dwt to t?
1 dwt equals 1.555174e-6 t. To convert, multiply the value in pennyweights (troy) by 1.555174e-6.
How do I convert 1 dwt to t?
1 dwt = 1.55517e-6 t. For any value, multiply by 1.555174e-6.
How do I convert t back to dwt?
Divide by the same factor — or equivalently, multiply by 643014.9. So 1 t = 643015 dwt.
When would I need to convert pennyweight (troy) to metric tonne?
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).