RollMaster uses decimal values instead of traditional inch fractions when working with rolled goods such as carpet and vinyl — especially in purchasing, receiving inventory, quoting, and order entry. Because most mills provide measurements in inches, you may need to convert those fractional inch values into decimal format before entering them into RollMaster.
Why convert inches to decimals?
Decimal values are easier for RollMaster to process and help ensure accurate calculations when pricing and tracking goods. Instead of entering fractional inch values like 1/2" or 3/8", you enter their decimal equivalents.
Common inch‑to‑decimal conversions
Here are some frequently used conversions of whole inches into decimal format for RollMaster:
| Inches | Decimal (approximate) |
|---|---|
| 1" | 0.08 |
| 2" | 0.17 |
| 3" | 0.25 |
| 4" | 0.33 |
| 5" | 0.42 |
| 6" | 0.50 |
| 7" | 0.58 |
| 8" | 0.67 |
| 9" | 0.75 |
| 10" | 0.83 |
| 11" | 0.92 |
These values show the approximate decimal form of inches, rounded to two decimal places, which is commonly used when entering measurements into RollMaster.
How to calculate your own conversions
To convert a fractional inch measurement to a decimal, you can use the basic math method:
If you have a whole‑inch plus a fraction (e.g., 3 1/4"), first convert the fraction: divide the numerator by the denominator (1 ÷ 4 = 0.25).
Add that to the whole‑inch value (3 + 0.25 = 3.25).
There are also many online calculators and charts that help convert fractional inches to decimal values quickly if you’re working with more complex measurements.
💡Quick Tip
For common fractions like 1/4, 1/2, and 3/4 inches, you can remember the decimals:
1/4" = 0.25
1/2" = 0.50
3/4" = 0.75
This makes entering lengths into RollMaster easier and reduces data entry errors.