// we are going to hook this on priority 31, so that it would display below add to cart button.
add_action( 'woocommerce_single_product_summary', 'woocommerce_total_product_price', 31 );
function woocommerce_total_product_price() {
global $woocommerce, $product;
// let's setup our divs
echo sprintf('<div id="product_total_price" style="margin-bottom:20px;display:none">%s %s</div>',__('Product Total:','woocommerce'),'<span class="price">'.$product->get_price().'</span>');
echo sprintf('<div id="cart_total_price" style="margin-bottom:20px;display:none">%s %s</div>',__('Cart Total:','woocommerce'),'<span class="price">'.$product->get_price().'</span>');
?>
<script>
jQuery(function($){
var price = <?php echo $product->get_price(); ?>,
current_cart_total = <?php echo $woocommerce->cart->cart_contents_total; ?>,
currency = '<?php echo get_woocommerce_currency_symbol(); ?>';
$('[name=quantity]').change(function(){
if (!(this.value < 1)) {
var product_total = parseFloat(price * this.value),
cart_total = parseFloat(product_total + current_cart_total);
$('#product_total_price .price').html( currency + product_total.toFixed(2));
$('#cart_total_price .price').html( currency + cart_total.toFixed(2));
}
$('#product_total_price,#cart_total_price').toggle(!(this.value <= 1));
});
});
</script>
<?php
}