Simple online tool to extract the elevation points.
http://www.zonums.com/online/equery.php
Steps:
1) Copy/paste your data (lat lon or X Y) on left area or...
Open a text file (txt,tab,csv)
2) Define Input coordinate system & Format
3) Click the "Query Elevation" button to get Elevations
4) Define Output coordinate system
5) Select Output File Format
6) Choose Elevation Units
7) Click the "Export" button
You can repeat steps 4 to 7 without querying again.
It might take up to a second per point location.