Grain to Slug Converter
Convert Grain (gr) to Slug (slug) instantly. 1 gr = 4.440136e-6 slug.
Mass Converter
26 units available
1 gr = 4.440136e-6 slug
Formula:
slug = gr × 0.0000044401With your value: 1 gr = 4.440136e-6 slug
How big is that?
Everyday references on a logarithmic scale, all expressed in grain so you can sanity-check the result.
Other Grain to Slug conversions
Grain to Slug Conversion Table
| Grain (gr) | Slug (slug) |
|---|---|
| 0.5 | 2.220068e-6 |
| 1 | 4.440136e-6 |
| 2 | 8.880271e-6 |
| 5 | 2.220068e-5 |
| 10 | 4.440136e-5 |
| 15 | 6.660204e-5 |
| 20 | 8.880271e-5 |
| 25 | 0.000111 |
| 50 | 0.000222 |
| 100 | 0.000444 |
| 250 | 0.00111 |
| 500 | 0.00222 |
| 1000 | 0.00444 |
Slug to Grain Conversion Table
| Slug (slug) | Grain (gr) |
|---|---|
| 0.5 | 112,609.170432 |
| 1 | 225,218.340864 |
| 2 | 450,436.681728 |
| 5 | 1,126,091.70432 |
| 10 | 2,252,183.408641 |
| 15 | 3,378,275.112961 |
| 20 | 4,504,366.817281 |
| 25 | 5,630,458.521602 |
| 50 | 11,260,917.043203 |
| 100 | 22,521,834.086407 |
| 250 | 56,304,585.216017 |
| 500 | 112,609,170.432034 |
| 1000 | 225,218,340.864067 |
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.
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
Slug (slug)
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 Grain to Slug
To convert from Grain (gr) to Slug (slug), multiply the value by 4.440136e-6.
Formula: slug = gr × 0.0000044401
Reverse: gr = slug × 225,218.340864067
Step-by-Step Example
- Start with your value in Grain. For example: 5 gr
- Multiply by the conversion factor: 5 x 4.440136e-6
- The result is: 2.220068e-5 slug
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).
About Slug
The slug is the unit of mass in the English engineering system: the mass accelerated at 1 ft/s² by 1 pound-force, about 14.5939 kg.
Common uses: aerospace engineering, US fluid mechanics.
Frequently Asked Questions
How many Slug are in 1 Grain?
There are exactly 4.440136e-6 Slug in 1 Grain. This means the conversion factor from Grain to Slug is 4.440136e-6.
What is the formula to convert Grain to Slug?
The formula to convert Grain to Slug is: slug = gr × 0.0000044401. For example, to convert 10 Grain to Slug, you would multiply 10 by 4.440136e-6.
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 is a Slug?
The slug is the unit of mass in the English engineering system: the mass accelerated at 1 ft/s² by 1 pound-force, about 14.5939 kg.
What are the common uses of Grain?
The Grain is commonly used in ammunition, archery, pharmacy (historic).
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Grain to Slug converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/grain-to-slug