Ounces and Pounds vs. Grams
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- Mass is a measure of the amount of material in an object with kg in the SI-system and slugs in the Imperial system
- Weight is the gravitational force acting on a body mass - Newton in the SI-system and pounds in the Imperial system
Note - it is not possible to convert pounds (or ounces) to kg (or grams) without including the force of gravity.
It is a common misconception to convert weight in pounds (ounces) to kg (grams) as mass as a measure of weight as indicated below.
| Imperial Units (weight) | SI-units (mass) |
|---|---|
| Ounces | grams |
| 1/4 (quarter) | 7 |
| 1/2 (half) | 14 |
| 3/4 (three quarters) | 21 |
| 1 | 28.35 |
| 2 | 57 |
| 3 | 85 |
| 4 (quarter lb) | 113 |
| 5 | 142 |
| 6 | 170 |
| 7 | 198 |
| 8 (half lb) | 227 |
| 9 | 255 (1/4 kilo) |
| 10 | 284 |
| 11 | 312 |
| 12 (3/4 lb) | 340 |
| 13 | 369 |
| 14 | 397 |
| 15 | 425 |
| 16 (1 lb) | 454 |
| 17 | 482 |
| 18 | 510 (1/2 kilo) |
| 19 | 539 |
| 20 (1 1/4 lbs) | 567 |
| 21 | 595 |
| 22 | 624 |
| 23 | 652 |
| 24 (1 1/2 lbs) | 680 |
| 25 | 709 |
| 26 | 737 |
| 27 | 765 (3/4 kilo) |
| 28 (1 3/4 lbs) | 794 |
| 29 | 822 |
| 30 | 851 |
| 31 | 879 |
| 32 (2 lbs) | 907 |
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Related Topics
• Basics
Basic engineering data. SI-system, unit converters, physical constants, drawing scales and more.
Related Documents
Density vs. Specific Weight and Specific Gravity
An introduction to density, specific weight and specific gravity.
Mass vs. Weight
Mass vs. weight - the Gravity Force.
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