Hi,
I already posted it on reddit a couple of days ago, but I thought I might as well post here.
It’s only a quick&dirty JsFiddle, but I made a tool to calculate actual travel time including actual distance, warp speed, ship acceleration and so on.
There is some more explanation in the reddit post and comments, but if you have any questions or feedback please let me now.
Since it was also asked in the reddit post: Feel free to copy and use my code, but be aware that it is not polished and pretty janky