This is an addon for Blender that let's you calculate the amount of time needed to render an entire animation.

You have to input the time it takes to render 1 frame or 3 in advanced mode and the addon will calculate the time needed.

Features:

-Simple mode: Only one input, less accurate output

-Advanced mode: Multiple inputs, more accurate output

-Shows total time

-Shows remainig frames

-Shows remaining time

-Shows progression

Limitations:

-You have to input the time needed to render one or more frames

-The time will be wrong of if it takes more time to render one part of the animation than the other (this is what advanced mode can mitigate)