Days to weave calculator

The Time To Weave Calculator works out the approximate time in days taken for one weaver to complete a rug. The time taken to prepare and dye the wool as well as clip and wash the finished carpet is not included. The speed of the average weaver was taken from the input of a number of rug dealers and experts.

Terms of use

This calculator is free to use on any website, commercial or educational with the only restriction being that the copyright details and links must remain intact. The calculator can be modified to a different colour scheme or design but the original authors guidelines must be followed. The calculator is registered with the Creative Commons Attribution Share License. Please share this calculator with others.

Click and copy (ctrl+c) and paste (ctrl+v) into the source code of your page:

iFrame:

Javascript:

function compute(form) {
var rugarea = (form.rugLength.value * form.rugWidth.value) * 1;
var rugknots = (rugarea * form.rugKPSI.value) * 1550;
var rugmin = (rugknots / 12);
var rughour = (rugmin / 60);
var rugtime = (rughour / 8) * 1;

rugarea = twoDecs(rugarea);
rugtime = Math.round(rugtime); 
rugknots= Math.round(rugknots);
form.area.value = rugarea;
form.knots.value = rugknots;
form.time.value = rugtime;

}
function twoDecs(item) {
return eval(parseInt(item * 100) * .01);
}
// -->
</script> 
 <form name="form">
<table width='394' cellpadding='2' cellspacing='1' bgcolor='#F0F0F0'>
   <tr bgcolor='#990000'>
     <td height="41" colspan='4' align='center' bgcolor="#990000"><font size="5"><a href="/" target="_blank" style="color:#000000; text-decoration:none"><strong>Persian & Oriental Rug Calculator</strong></a></font> </td>
   </tr>
   <tr bgcolor='#F0F0F0'>
     <td colspan='4' bgcolor="#F0F0F0"><p align="center"><font face='arial' size='2' color='#000000'>This calculator  allows you to establish  the number of days it would have taken to weave your rug.
       The calculator is based on an 8 hour day working at 12 knots per minute and does not include preperation time:</font><br />
     </p>
        </td>
   </tr>
   <tr>
     <td  height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Length:</font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"><font size="2">
         <input type=text name=rugLength size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"><div align="left"><font size="2">metres (e.g. 2.5)</font>
     </div></td>
   </tr>
   <tr>
     <td height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Width: </font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"><font size="2">
         <input type=text name=rugWidth size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"><div align="left"><font size="2">metres (e.g. 1.8)</font></div></td>
   </tr>
   <tr>
     <td height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Knots per square inch:</font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"><font size="2">
         <input type=text name=rugKPSI size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"><div align="left"><font size="2"> KPSI (e.g. 120)</font></div></td>
   </tr>
   <tr>
     <td height="30" bgcolor="#F0F0F0"><p align="right"><font size="2"></font><font size="2">
         <input type=reset value="Clear form" />
     </font></p></td>
     <td height="30" colspan="2" bgcolor="#F0F0F0"><p> <font size="2">
         <input type=button value="Calculate" onClick="compute(this.form)" />
     </font></p></td><td></p></td>
   </tr>
   <tr>
     <td height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Area:</font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"> <font size="2">
         <input type=text name=area size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"><div align="left"><font size="2"> sq m</font></div></td>
   </tr>
   <tr>
     <td height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Total knots:</font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"> <font size="2">
         <input type=text name=knots size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"><div align="left"><font size="2"> knots</font></div></td>
   </tr>
   <tr>
     <td height="25" bgcolor="#F0F0F0"><p align="right"><font size="2">Time taken:</font></p></td>
     <td height="25" colspan="2" bgcolor="#F0F0F0"><p align="left"> <font size="2">
         <input type=text name=time size=8 />
     </font></p></td>
     <td width="126" height="25" bgcolor="#F0F0F0"> <div align="left"><font size="2">days (approx)
     </font></div></td>
   </tr>
   <tr>
     <td height="5" colspan="2" bgcolor="#F0F0F0"></td>
   </tr>
   <tr cellpadding='6' cellspacing='1' bgcolor='#990000'>
     <td height="25" colspan="4" bordercolor="#990000" bgcolor="#990000"><p align="center"><a href="/days-to-weave-calculator#terms" rel="nofollow" style="color:#000000;" target="_blank"><font size="2.5">Terms of use</font></a>    <a href="/days-to-weave-calculator#code" rel="nofollow" style="color:#000000;" target="_blank"><font size="2.5">Add this tool to your site</font></a>    <a rel="nofollow" href="http://creativecommons.org/licenses/by-sa/3.0/" target="_blank"><img src="http://i.creativecommons.org/l/by-sa/3.0/80x15.png" alt="Creative Commons License" align="absmiddle" style="border-width:0" /></a><br />
     </p></td>
   </tr>
 </table>
 </form>

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