If you are using wordpress , you can export easily to Tumblr.
First , download the wordpress export file. Tools > Export in wordpress dashboard.
You will receive the xml file after downloading.
You need to install python to use wordpress to tumblr script. If you are using Linux or Mac, python already support in OS and no need to install.
Download the script from wp2tumblr.
After unzip, you will see wp2tumblr.py file. Open the terminal and go to the directory of wp2tumblr.py
[gist id=”3616374”]Tumblr only allow 100 posts per day. If you have more than 100 posts , you can start this script again and change the -s . So, don’t forget about the latest export number. If you forget , you need to start from 0 again at next day.