Convert Pennyweight to Metric Ton
Convert pennyweights to metric tons instantly. 1 pennyweight = 1.555174e-6 metric ton — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Ton to Pennyweight converter for the reverse conversion.
Units explained
Pennyweight
The pennyweight (dwt) equals one-twentieth of a troy ounce, 24 grains (about 1.555 g).
From the mass of a medieval English silver penny; symbol dwt from 'denarius weight'.
Jewelry making and precious-metal scrap valuation in the US.
Derived from the medieval English coinage system.
Metric Ton
The metric ton (t) equals exactly 1,000 kilograms; it is also called the tonne.
From 'tun', a large medieval cask; 'metric' distinguishes it from imperial tons.
The global standard for trade, freight, and heavy industry.
Recognized internationally with the spread of the metric system in the late 19th century.
Pennyweight to Metric Ton conversion formula
The relationship between pennyweights and metric tons:
To convert pennyweights to metric tons, multiply the value in pennyweights by 1.555174e-6. To reverse, multiply metric tons by 643014.9479112881.
How to use this converter
Type a value into the calculator. The result in metric tons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Metric Ton to Pennyweight converter for the reverse direction.
Step-by-step: convert pennyweights to metric tons
- Write down the value in pennyweights (dwt).
- Multiply that value by the factor 1.555174e-6.
- The product is the equivalent value in metric tons (t).
- To reverse, multiply the metric ton value by 643014.9479112881.
Worked examples
Example 1 — Convert 1 dwt to t:
1 × 1.555174e-6 = 1.555174e-6 t
Example 2 — Convert 100 dwt to t:
100 × 1.555174e-6 = 0.0001555174 t
Real-world example — Architectural to geographic scale
A 100,000-pennyweight measurement equals one metric ton. The five-order-of-magnitude scale change comes up in mapping work where architectural site plans must be related to road-network maps.
100000 dwt × 1.555174e-6 = 0.15551738 t
Real-world example — Small to geographic-scale
100,000 pennyweights equals one metric ton — a useful conversion when small-scale survey diagrams must be related to road-network distances on a different map.
100000 dwt × 1.555174e-6 = 0.15551738 t
Pennyweight to Metric Ton conversion table
Standard reference values for converting pennyweights to metric tons:
| Pennyweight [dwt] | Metric Ton [t] |
|---|---|
| 0.01 | 1.555174e-8 |
| 0.1 | 1.555174e-7 |
| 1 | 1.555174e-6 |
| 2 | 3.110348e-6 |
| 3 | 4.665521e-6 |
| 4 | 6.220695e-6 |
| 5 | 7.775869e-6 |
| 10 | 1.555174e-5 |
| 20 | 3.110348e-5 |
| 30 | 4.665521e-5 |
| 40 | 6.220695e-5 |
| 50 | 7.775869e-5 |
| 100 | 0.0001555174 |
| 500 | 0.0007775869 |
| 1000 | 0.0015551738 |
Frequently asked questions
How many metric tons is 1 pennyweight?
How do I convert pennyweights to metric tons?
How do I convert metric tons back to pennyweights?
How many metric tons is 100 pennyweights?
Popular weight unit conversions
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Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 dwt = 1.555174e-6 t) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.