Kilogram to Pennyweight Converter
Convert Kilogram (kg) to Pennyweight (dwt) instantly. 1 kg = 643.014931 dwt.
Mass Converter
26 units available
1 kg = 643.014931 dwt
Formula:
dwt = kg × 643.0149313726With your value: 1 kg = 643.01493137 dwt
How big is that?
Everyday references on a logarithmic scale, all expressed in kilogram so you can sanity-check the result.
Other Kilogram to Pennyweight conversions
Kilogram to Pennyweight Conversion Table
| Kilogram (kg) | Pennyweight (dwt) |
|---|---|
| 0.5 | 321.507466 |
| 1 | 643.014931 |
| 2 | 1,286.029863 |
| 5 | 3,215.074657 |
| 10 | 6,430.149314 |
| 15 | 9,645.223971 |
| 20 | 12,860.298627 |
| 25 | 16,075.373284 |
| 50 | 32,150.746569 |
| 100 | 64,301.493137 |
| 250 | 160,753.732843 |
| 500 | 321,507.465686 |
| 1000 | 643,014.931373 |
Pennyweight to Kilogram Conversion Table
| Pennyweight (dwt) | Kilogram (kg) |
|---|---|
| 0.5 | 0.000778 |
| 1 | 0.001555 |
| 2 | 0.00311 |
| 5 | 0.007776 |
| 10 | 0.015552 |
| 15 | 0.023328 |
| 20 | 0.031103 |
| 25 | 0.038879 |
| 50 | 0.077759 |
| 100 | 0.155517 |
| 250 | 0.388793 |
| 500 | 0.777587 |
| 1000 | 1.555174 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Kilogram (kg)
Mass
The kilogram is defined by taking the Planck constant to be exactly 6.626 070 15 × 10⁻³⁴ J·s.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Pennyweight (dwt)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Kilogram to Pennyweight
To convert from Kilogram (kg) to Pennyweight (dwt), multiply the value by 643.0149313726.
Formula: dwt = kg × 643.0149313726
Reverse: kg = dwt × 0.0015551738
Step-by-Step Example
- Start with your value in Kilogram. For example: 5 kg
- Multiply by the conversion factor: 5 x 643.0149313726
- The result is: 3,215.074657 dwt
About Kilogram
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
Fun Fact: Until 2019, the kilogram was defined by a platinum-iridium cylinder kept in Paris, called "Le Grand K."
Common uses: body weight, cooking, shipping.
About Pennyweight
The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.
Common uses: jewellery trade, gold scrap, assaying.
Frequently Asked Questions
How many Pennyweight are in 1 Kilogram?
There are exactly 643.0149313726 Pennyweight in 1 Kilogram. This means the conversion factor from Kilogram to Pennyweight is 643.0149313726.
What is the formula to convert Kilogram to Pennyweight?
The formula to convert Kilogram to Pennyweight is: dwt = kg × 643.0149313726. For example, to convert 10 Kilogram to Pennyweight, you would multiply 10 by 643.0149313726.
What is a Kilogram?
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
What is a Pennyweight?
The pennyweight (dwt) equals 1/20 of a troy ounce, about 1.555 grams. Jewellers still price scrap gold by the pennyweight.
What are the common uses of Kilogram?
The Kilogram is commonly used in body weight, cooking, shipping.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Kilogram to Pennyweight converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/kilogram-to-pennyweight