Pennyweight to Milligram Conversion Calculator: Free Online Tool
Convert pennyweights to milligrams with our free online weight converter.
Pennyweight to Milligram Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Pennyweight).
- The converted value in Milligram will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Pennyweight to Milligram
Converting Pennyweight to Milligram involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Pennyweight = 1555.17 milligramsExample Calculation:
Convert 5 pennyweights: 5 × 1555.17 = 7775.85 milligrams
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Pennyweight and a Milligram?
The pennyweight (dwt) is a unit of mass in the troy weight system. It is equal to 1/20 of a troy ounce, or 24 grains. It is equivalent to exactly 1.55517384 grams.
The milligram is a unit of mass in the metric system equal to one-thousandth of a gram (1/1000 g) or one-millionth of a kilogram (1/1,000,000 kg). It is commonly used for measuring very small quantities.
Note: The Pennyweight is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Milligram belongs to the metric (SI) system.
History of the Pennyweight and Milligram
Historically, the pennyweight was the weight of a silver penny in medieval England. It became part of the standardized troy system used for precious metals and coinage.
Like the gram, the milligram's definition is derived directly from the kilogram. Its use became prevalent with the need for precise measurements in science and medicine as the metric system was adopted globally.
Common Uses for pennyweights and milligrams
Explore the typical applications for both Pennyweight (imperial/US) and Milligram (metric) to understand their common contexts.
Common Uses for pennyweights
- Jewelry: Used by jewelers and goldsmiths for measuring quantities of precious metals during crafting and valuation.
- Dentistry: Sometimes used for measuring dental alloys.
- Ammunition: Historically used for specifying the weight of components in ammunition.
Common Uses for milligrams
- Pharmaceuticals: Measuring the dosage of medications, pills, and active ingredients in drugs.
- Scientific Research: Common unit for mass measurements in chemistry labs, biology, and physics experiments for very small quantities.
- Nutrition & Supplements: Used for labeling the content of vitamins, minerals, and other nutrients in dietary supplements.
- Precision Manufacturing: Weighing very lightweight items like microelectronic components, fine powders, or precious materials.
- Analytical Chemistry: Standard unit for quantifying trace elements and compounds in samples.
Frequently Asked Questions
Questions About Pennyweight (dwt)
How many pennyweights are in a troy ounce?
There are 20 pennyweights (dwt) in 1 troy ounce (oz t).
How many grains are in a pennyweight?
There are 24 grains (gr) in 1 pennyweight (dwt).
How many grams are in a pennyweight?
There are exactly 1.55517384 grams (g) in 1 pennyweight (dwt).
About Milligram (mg)
How many milligrams are in a gram?
There are 1,000 milligrams (mg) in 1 gram (g).
Is the milligram used in everyday life?
Its most common everyday use is in medication dosages and supplement information. It's less common for general weighing compared to grams or kilograms.
What does 'milli' mean in milligram?
The prefix 'milli' denotes one-thousandth (1/1000).
Conversion Table: Pennyweight to Milligram
| Pennyweight (dwt) | Milligram (mg) |
|---|---|
| 1 | 1,555.174 |
| 5 | 7,775.869 |
| 10 | 15,551.738 |
| 25 | 38,879.346 |
| 50 | 77,758.692 |
| 100 | 155,517.384 |
| 500 | 777,586.92 |
| 1,000 | 1,555,173.84 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Gram (g)
- Pound (lb)
- Ounce (oz)
- Stone (st)
- Ton (metric) (t)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Carat (ct)
- Slug (sl)
- Troy Ounce (oz t)
- Grain (gr)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)