jazzigor

“price-calc” is a WordPress plug-in that shows a nice inter-active price calculator form on any post, page or widget content. Let your customers view automatic bids and cost estimates for your products and services. You can set up a set of product variations and freely define a price structure. 
Once configured, it’s as easy as placing the simple 
[price-calc] 
mark-up anywhere in your text. The user gets a nice interactive form to choose all the characteristics he needs. When he’s ready he can see the quote instantly on the screen, print it out or get it by email.
PLEASE NOTE: There will not be any further development of this software. It will be replaced by <a href="http://www.l90r.com/posts/jazzy-forms" rel="nofollow ugc">Jazzy Forms</a>.
Features are:
<ul>
<li>AJAX user-experience,</li>
<li>different options for each general product type,</li>
<li>a fully configurable price structure,</li>
<li>instant price calculations appears on screen while the user fills in the form,</li>
<li>displays a detailed cost estimate on screen,</li>
<li>optional printer-friendly window pop-up,</li>
<li>optional email delivery to customer and/or your company.</li>
<li>user-defined calculation formula with addition, multiplication and percentages</li>
<li>customizable quote structure with intermediate results</li>
</ul>
Requirements:
<ul>
<li>PHP 5.2 or greater</li>
<li>WP 2.8 or greater</li>
</ul>
More info at this <a href="http://www.thickthumb.com/open-source/price-calc/" rel="nofollow ugc">plugin’s homepage</a>

price-calc

"price-calc" is a WordPress plug-in that shows a nice inter-active price calculator for your product variations on any post or page.

ensignrolaren

A simple form to calculate how many yards of material (such as bark mulch, soil, concrete, gravel, etc) are needed to cover square feet to a given depth in inches.
By default, the calculator is for rectangular areas. User enters length and width in feet and depth in inches; the calculator returns yards of material needed, rounded up to the nearest whole number. You can also round to two decimal places (hundredths) by adding a parameter to the shortcode, like this:
<pre><code>[yardagecalc rounding="hundredths"]
</code></pre>
I’ve also included calculations for circular and right triangular areas– just modify the shortcode like this:
CIRCLE
<pre><code>[yardagecalc type="circle"]
</code></pre>
TRIANGLE
<pre><code>[yardagecalc type="triangle"]
</code></pre>
The calculator has no dependencies, adds ✨nothing✨ to your WordPress dashboard, and is style agnostic.

Tiny Yardage Calculator

Calculates yards of material needed to cover square feet to a given depth in inches. User enters dimensions, calculator returns results in cubic yards …

price-calc vs Tiny Yardage Calculator