Fontmonk is a simple tool that converts (geddit?) fonts from one format to another using FontForge.
Clone and run, no installation required. Make sure you have FontForge installed (for Ubuntu and friends, try the fontforge-nox package).
Fontmonk is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. The complete GNU General Public License is available at http://www.gnu.org/licenses/.