Magento 1.x How to get order Total amount in my custom module page?

Question

How to get order total amount in my custom file ?

Answer 1

try Following way...

$order = Mage::getSingleton('sales/order')->loadByIncrementId($orderId);

$order->getGrandTotal();

Answer 2

Basically we get order total amount like this :

$order = Mage::getModel("sales/order")->loadByIncrementId($orderId); // get order

$order->getGrandTotal();