Scruple to Grain Converter
Convert Scruple (scr) to Grain (gr) instantly. 1 scr = 20 gr.
Mass Converter
26 units available
1 scr = 20 gr
Formula:
gr = scr × 20With your value: 1 scr = 20 gr
How big is that?
Everyday references on a logarithmic scale, all expressed in scruple so you can sanity-check the result.
Other Scruple to Grain conversions
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 |
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 |
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.
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
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 Scruple to Grain
To convert from Scruple (scr) to Grain (gr), multiply the value by 20.
Formula: gr = scr × 20
Reverse: scr = gr × 0.05
Step-by-Step Example
- Start with your value in Scruple. For example: 5 scr
- Multiply by the conversion factor: 5 x 20
- The result is: 100 gr
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.
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 Scruple?
There are exactly 20 Grain in 1 Scruple. This means the conversion factor from Scruple to Grain is 20.
What is the formula to convert Scruple to Grain?
The formula to convert Scruple to Grain is: gr = scr × 20. For example, to convert 10 Scruple to Grain, you would multiply 10 by 20.
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 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 Scruple?
The Scruple is commonly used in mass calculations, engineering and science, education.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Scruple to Grain converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/scruple-to-grain