| Online Calculation | |
| Roll Diameter (inches): | |
| Core Diameter (inches): | |
| Roll Width (inches): | |
| Factor: | |
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| Estimated Roll Weight: | |
| Factor Chart | |||
| Antique | .018 | Tag and Index | .026 |
| Vellum Offset | .020 | C1S | .033 |
| Bond | .021 | C2S Cover | .033 |
| Smooth Offset | .022 | C1S Cover & Blanks | .030 |
| Vellum Bristol-Cover | .022 | ||
| Formula |
|
[(Roll Diameter² ) - (Core Diameter²)] x Roll Width x Factor = Roll Weight
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| Example |
| Find the weight of a roll of forms bond paper with a roll diameter of 40 inches, a core diameter of 3 inches, and a roll width of 17.5 inches. |
[(40 x 40) - (3 x 3)] x 17.5 x .021 = 585 lbs . |
| Note: .021 is the appropriate factor for forms bond paper. |