Convert Ounces (oz) to Grains (gr)
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Updated on September 1, 2025
You can use our Ounces (oz) to Grains (gr) conversion calculator as a reliable and efficient tool to simplify weight conversions. It is designed for professionals, students, and anyone who needs a quick and accurate result. Conversion of Ounces (oz) to Grains (gr) is crucial in Postal services related measurements. You can avoid the risk of manual calculation errors and save valuable time using our Ounces (oz) to Grains (gr) converter.About Ounces (oz) to Grains (gr) Conversion Calculator
Written By
Nadiba Rahman
Reviewed by
Mrinmoy Roy
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Relation Between Ounces (oz) and Grains (gr)
Let me explain to you about the relation between Ounces oz and Grains (gr) first before moving to the conversion process. Because it’s essential to grasp what these units represent.What is Ounces (oz)?
An ounce is a unit of mass equal to 1/16 of a pound or approximately 28.35 grams. Ounces (oz) is a unit of weight measurement which is commonly used in Postal services. Commonly used in cooking, postal services, and jewelry. Varies between systems (e.g., troy ounce for precious metals = 31.103 grams). Widely recognized in the imperial and US customary systems..What is Grains (gr)?
Ounces (oz) is another unit of weight measurement that is used in Ammunition weight. A grain is a unit of mass equal to 1/7000th of a pound or 64.798 milligrams.. Commonly used in cooking, postal services, and jewelry. Varies between systems (e.g., troy ounce for precious metals = 31.103 grams). Widely recognized in the imperial and US customary systems..How to Convert Grains (gr)?
The conversion between Ounces (oz) and Grains (gr) follows a simple formula:Ounces = Ounces × 437.50002551457214
Where, 437.50002551457214 is the value that allows you to convert between Ounces (oz) and Grains (gr).
So,
1 Grains = 437.50002551457214 Ounces
And, 1 Ounces = 1/437.50002551457214 Grains
Examples of Converting Ounces (oz) to Grains (gr)
To convert any value from Ounces (oz) to Grains (gr), simply multiply the amount of Ounces (oz) by the conversion factor:1 Grains = 437.50002551457214 Ounces
For example, if you want to convert 5 Ounces into Grains and the conversion factor is 437.50002551457214, then:
5 Ounces = 5 x 437.50002551457214 Grains
Ounces (oz) to Grains (gr) Conversion Chart
Here’s a quick reference chart for common conversions between Ounces (oz) and Grains (gr)| Ounces (oz) | Grains (gr) |
|---|---|
| 100 Ounces (oz) | 43750.00255145721 Grains (gr) |
| 200 Ounces (oz) | 87500.00510291442 Grains (gr) |
| 300 Ounces (oz) | 131250.00765437164 Grains (gr) |
| 400 Ounces (oz) | 175000.01020582885 Grains (gr) |
| 500 Ounces (oz) | 218750.01275728608 Grains (gr) |
| 600 Ounces (oz) | 262500.0153087433 Grains (gr) |
| 700 Ounces (oz) | 306250.0178602005 Grains (gr) |
| 800 Ounces (oz) | 350000.0204116577 Grains (gr) |
| 900 Ounces (oz) | 393750.02296311496 Grains (gr) |
| 1000 Ounces (oz) | 437500.02551457216 Grains (gr) |
How 1 Ounces (oz) Converts to Other weight Units
See the relation between Ounces (oz) and other weight related measurement units:| 1 Ounces(oz) | 141.747623 Carats (ct) |
| 1 Ounces(oz) | 0.000625 Cental (c) |
| 1 Ounces(oz) | 2.834952 Decagrams (dg) |
| 1 Ounces(oz) | 28.349525 Grams (g) |
| 1 Ounces(oz) | 0.283495 Hectograms (hg) |
| 1 Ounces(oz) | 0.000558 Hundredweights (cwt) |
| 1 Ounces(oz) | 0.028350 Kilograms (kg) |
| 1 Ounces(oz) | 0.000000 Kilotonnes (kt) |
| 1 Ounces(oz) | 0.000000 Megatonnes (Mt) |
| 1 Ounces(oz) | 28349524.691869 Micrograms (µg) |
| 1 Ounces(oz) | 28349.524692 Milligrams (mg) |
| 1 Ounces(oz) | 28349524691.869015 Nanograms (ng) |
| 1 Ounces(oz) | 28349524691869.015625 Picograms (pg) |
| 1 Ounces(oz) | 0.062500 Pounds (lb) |
| 1 Ounces(oz) | 0.001943 Slug (slug) |
| 1 Ounces(oz) | 0.004464 Stones (st) |
| 1 Ounces(oz) | 0.000028 Tonnes (t) |
| 1 Ounces(oz) | 0.000031 Tons (ton) |
| 1 Ounces(oz) | 218.750012 Calorie (cal) |
| 1 Ounces(oz) | 0.000028 Metric tons (tonne / t) |
| 1 Ounces(oz) | 0.000028 Long tons (lt) |
Features of Our Ounces (oz) to Grains (gr) Conversion Calculator
Our Ounces oz to Grains (gr) converter is more than just a basic converter. Here's what makes it stand out:Output Precision Control
You can control how precise your conversion results are. From settings, you can adjust decimal places from 0 to 12 places.Customizable Rounding Options
You can control the output rounding options based on your necessity. You can turn the rounding mode on or off, and select between Ceiling or Floor rounding to match your needs.Multiple Number Formats
Display your results the way you want:- Standard format (e.g. 12.345245)
- Scientific notation (e.g. 1.23452e+1)
- Engineering format (e.g. 1.23452 × 10^1)