Astronomical tools

Astrophysical Calculator	Coordinate transformation	Julian date converter [obsolete]	Conversion of units
Unit Conversion	Numerical Methods	StatCodes On-line statistical software	Coord. Conversion + Precession (alt. page)
Coord. Conv. (now inactive)	Magn/Flux/Jy-converter	On-line Manuals IRA-CNR	HTML Guides (many dead links)
HTML Primer	RA,DEC to Az,El	Kinematic distances (BeSSeL; Reid+ 2014)	Julian date converter (alt)