Grain to Scruple Converter
Convert Grain (gr) to Scruple (scr) instantly. 1 gr = 0.05 scr.
Mass Converter
26 units available
1 gr = 0.05 scr
Formula:
scr = gr × 0.05With your value: 1 gr = 0.05 scr
How big is that?
Everyday references on a logarithmic scale, all expressed in grain so you can sanity-check the result.
Other Grain to Scruple conversions
Grain to Scruple Conversion Table
| Grain (gr) | Scruple (scr) |
|---|---|
| 0.5 | 0.025 |
| 1 | 0.05 |
| 2 | 0.1 |
| 5 | 0.25 |
| 10 | 0.5 |
| 15 | 0.75 |
| 20 | 1 |
| 25 | 1.25 |
| 50 | 2.5 |
| 100 | 5 |
| 250 | 12.5 |
| 500 | 25 |
| 1000 | 50 |
Scruple to Grain Conversion Table
| Scruple (scr) | Grain (gr) |
|---|---|
| 0.5 | 10 |
| 1 | 20 |
| 2 | 40 |
| 5 | 100 |
| 10 | 200 |
| 15 | 300 |
| 20 | 400 |
| 25 | 500 |
| 50 | 1,000 |
| 100 | 2,000 |
| 250 | 5,000 |
| 500 | 10,000 |
| 1000 | 20,000 |
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
Scruple (scr)
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 Scruple
To convert from Grain (gr) to Scruple (scr), multiply the value by 0.05.
Formula: scr = gr × 0.05
Reverse: gr = scr × 20
Step-by-Step Example
- Start with your value in Grain. For example: 5 gr
- Multiply by the conversion factor: 5 x 0.05
- The result is: 0.25 scr
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 Scruple
The scruple (scr) is a unit of mass and weight. One scruple equals 0.0012959782 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: mass calculations, engineering and science, education.
Frequently Asked Questions
How many Scruple are in 1 Grain?
There are exactly 0.05 Scruple in 1 Grain. This means the conversion factor from Grain to Scruple is 0.05.
What is the formula to convert Grain to Scruple?
The formula to convert Grain to Scruple is: scr = gr × 0.05. For example, to convert 10 Grain to Scruple, you would multiply 10 by 0.05.
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 Scruple?
The scruple (scr) is a unit of mass and weight. One scruple equals 0.0012959782 kilograms. UnitConvertLab converts it against every other mass unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
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 Scruple converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/grain-to-scruple