Pennyweight to Grain Converter
Convert Pennyweight (dwt) to Grain (gr) instantly. 1 dwt = 24 gr.
Mass Converter
26 units available
1 dwt = 24 gr
Formula:
gr = dwt × 24With your value: 1 dwt = 24 gr
How big is that?
Everyday references on a logarithmic scale, all expressed in pennyweight so you can sanity-check the result.
Other Pennyweight to Grain conversions
Pennyweight to Grain Conversion Table
| Pennyweight (dwt) | Grain (gr) |
|---|---|
| 0.5 | 12 |
| 1 | 24 |
| 2 | 48 |
| 5 | 120 |
| 10 | 240 |
| 15 | 360 |
| 20 | 480 |
| 25 | 600 |
| 50 | 1,200 |
| 100 | 2,400 |
| 250 | 6,000 |
| 500 | 12,000 |
| 1000 | 24,000 |
Grain to Pennyweight Conversion Table
| Grain (gr) | Pennyweight (dwt) |
|---|---|
| 0.5 | 0.020833 |
| 1 | 0.041667 |
| 2 | 0.083333 |
| 5 | 0.208333 |
| 10 | 0.416667 |
| 15 | 0.625 |
| 20 | 0.833333 |
| 25 | 1.041667 |
| 50 | 2.083333 |
| 100 | 4.166667 |
| 250 | 10.416667 |
| 500 | 20.833333 |
| 1000 | 41.666667 |
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.
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
Grain (gr)
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 Pennyweight to Grain
To convert from Pennyweight (dwt) to Grain (gr), multiply the value by 24.
Formula: gr = dwt × 24
Reverse: dwt = gr × 0.0416666667
Step-by-Step Example
- Start with your value in Pennyweight. For example: 5 dwt
- Multiply by the conversion factor: 5 x 24
- The result is: 120 gr
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.
About Grain
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
Common uses: ammunition, archery, pharmacy (historic).
Frequently Asked Questions
How many Grain are in 1 Pennyweight?
There are exactly 24 Grain in 1 Pennyweight. This means the conversion factor from Pennyweight to Grain is 24.
What is the formula to convert Pennyweight to Grain?
The formula to convert Pennyweight to Grain is: gr = dwt × 24. For example, to convert 10 Pennyweight to Grain, you would multiply 10 by 24.
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 is a Grain?
The grain equals exactly 64.79891 milligrams and was originally the weight of a single barleycorn. It is still the standard unit for bullets, propellant and arrows.
What are the common uses of Pennyweight?
The Pennyweight is commonly used in jewellery trade, gold scrap, assaying.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Pennyweight to Grain converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/pennyweight-to-grain