| To Convert From: | To: | Mulitply by |
| inch | meter (m) | .0254 |
| inch | millimeter (mm) | 25.4 |
| ounce mass | kilogram (kg) | .0283 |
| ounce force | newton (N) | .278 |
| pound mass | kilograms (kg) | .4536 |
| pound force | newton (N) | 4.4482 |
| pound force/inch | newton/millimeter (N/mm) | .1751 |
| pound force/inch2 (psi) | megapascal (MPa) | .006895 |
| pound force inch | newton-millimeter (N/mm) | 112.9848 |
| pound force foot | newton-meter (N/m) | 1.3558 |
| kilogram force | newton (N) | 9.8066 |
| degree (angle) | radian (rad) | .01745 |
| minute (angle) | radian (rad) | .0002908 |
| degree F | degree celius (C) | (F-32)/1.8 |
multiply diameter by 3.1416
multiply circumference by .31831
multiply length by breadth
multily base by 1/2 perpendicular height
multiply product of both diameters by .7854
multiply base by altitude
multiply diameter by 0.7071 or multiply circumference by 0.2251 or divide
circumference by 4.4428
mulitply radius of sphere by 1.1547
multiply diameter by .8862
square the diameter and multiply by 3.1416
cube the diameter and multiply by .5236
*The side of a square multiplied by 1.4142 equals diameter of its circmscribing circle
*The side of a square multiplied by 4.443 equals circumference of its circumscribing circle
*The side of a square multiplied by 1.128 equals diameter of an equal circle
*The side of a square multiplied by 3.547 equals circulference of an equal circle
**To find the gallon capacity of tanks (given the dimensions of a cylinder is in inches):
square the diameter of the cylinder, multiply by the length and by .0034.
| GIVEN | TO FIND | RULE |
| The taper per foot | The taper per inch | Divide the taper per foot by 12 |
| The taper per inch | The taper per foot | Multiply the taper per inch by 12 |
| End diameters and lenght of taper in inches | The taper per foot | Subtract small diameter from large;divide by length of taper, and multiply quotient by 12 |
| Large diameter and lenght of taper in inches, and taper per foot | Diameter at small end in inches | Divide taper per foot by 12; multply by length of taper, and subtract result from large diameter |
| Small diameter and length of taper in inches, and taper per foot | Diameter at large end in inches | Divide taper per foot by 12; multiply by length of taper, and add result to small diameter |
| The taper per foot and two diameters in inches | Distance between two given diameters in inches | Subtract small diameter from large; divide remainder by taper per foot, and multily quotient by 12 |
| The taper per foot | Amount of taper in a certain length given in inches | Divide taper per foot by 12; multiply by given length of tapered part |