Length Calculator or Unit Conversion in javascript

This is a Length calculator or unit conversion script, which converts any of the entered unit(inches, feet, centimeter, kilometer, mile) to all other units including inches(in), feet(ft), centimeter(cm), kilometer(km), mile(mile).

Features

The javascript function will help you to calculate or convert inches(in) to feet(ft),centimeter(cm), kilometer(km),mile and vice versa.
If you change the value for particular unit, conversion is automatically done for all other units.
The value is rounded to two decimal point.
Just copy the code in to your page and use it.

Preview

Length calculator or Unit Conversion script

Downloads

Javascript Code

<script type="text/javascript">
function checnum(as)
{
var dd = as.value;

if(isNaN(dd))
{
dd = dd.substring(0,(dd.length-1));
as.value = dd;
}
} function inchconv(val){
with(document.conv){
cm.value = (Math.round(inch.value*2.54)).toFixed(2);
feet.value=(Math.round(inch.value/12)).toFixed(2);
var tmp=(inch.value* 2.54)*Math.pow(10,-5);
kilo.value=((inch.value* 2.54)*Math.pow(10,-5)).toFixed(2);
miles.value=((inch.value*1.58)*Math.pow(10,-5)).toFixed(2);
} }
function feetconv(val){
with(document.conv){
cm.value=(Math.round(feet.value*30.48)).toFixed(2);
inch.value=(Math.round(feet.value*12)).toFixed(2);
kilo.value=((feet.value* 3.05)*Math.pow(10,-4)).toFixed(2);
miles.value==((feet.value*1.8900000000000001)*Math.pow(10,-4)).toFixed(2);
} } function cmconv(val){
with(document.conv){
feet.value = (Math.round(cm.value/30.84)).toFixed(2);
inch.value = (Math.round(cm.value/2.54)).toFixed(2);
kilo.value=((cm.value*1)*Math.pow(10,-5)).toFixed(2);
miles.value==((cm.value*6.21)*Math.pow(10,-6)).toFixed(2);
} } function kiloconv(val){
with(document.conv){
feet.value = ((kilo.value*3.28)*Math.pow(10,3)).toFixed(2);
inch.value = ((kilo.value*3.94)*Math.pow(10,4)).toFixed(2);
cm.value=((kilo.value*1)*Math.pow(10,5)).toFixed(2);
miles.value=((kilo.value* 0.621)).toFixed(2);
} } function milesconv(val){
with(document.conv){
feet.value =((miles.value* 5.28)*Math.pow(10,3)).toFixed(2);
inch.value = ((miles.value*6.34)*Math.pow(10,4)).toFixed(2);
cm.value=((miles.value*1.61)*Math.pow(10,5)).toFixed(2);
kilo.value=((miles.value*1.61)).toFixed(2);
} } </script>

HTML CODE

<form name=conv>
<table style='border:green solid 1px;font-size:12px'width=220 height=50>
<tr>
<td>Length calculator</td>
<td align=right><a style='font-size:13px; text-decoration:none; color:#3D366F;cursor:pointer' href='https://www.hscripts.com'>H</a></td></tr>
<tr><td align=center><input onkeyUp="checnum(this);inchconv();" value=1 name=inch></td><td>inch</td></tr>
<tr><td align=center><input
onkeyUp="checnum(this);cmconv();" value=2.25 name=cm
></td><td>cm</td></tr>
<tr><td align=center><input onkeyUp="checnum(this);feetconv();" value=0 name=feet
></td><td>feet</td></tr>
<tr><td align=center><input onkeyUp="checnum(this);kiloconv();" value=0 name=kilo ></td><td>kilo</td></tr>
<tr><td align=center><input onkeyUp="checnum(this);milesconv();" value=0 name=miles></td><td>Miles</td></tr>
</table> </form> <br>

Release Date - 07-04-2008
Get free version without ©copyright link for just $10/-
For customization of this script or any script development, mail to support@hscripts.com

Usage

He we have explained with a form
Creating the form using following HTML code

<form name=conv><table><tr><td></td></tr>
    <tr><td>
        <input onkeyUp="checnum(this);inchconv();"name=inch>inch
    </td></tr>
    <tr><td >
        <input onkeyUp="checnum(this);cmconv();" name=cm >cm
    </td></tr>
    <tr><td >
        <input onkeyUp="checnum(this);feetconv();" name=feet >feet
    </td></tr>
    <tr><td >
        <input onkeyUp="checnum(this);kiloconv();" name=kilo >kilo
    </td></tr>
    <tr><td >
        <input onkeyUp="checnum(this);milesconv();" name=miles>Mile
    </td></tr>
    </form></table>

The javascript function inchconv(), cmconv(), feetconv(), kiloconv(), milesconv() is triggered and Length or Unit conversion is done when key is released in the appropriate field.
Just copy the javascript code and use it for free.