i found a great picture of a full piano keyboard (made by phillip kuhrt based on an original by sergey pushkin) on wikimedia; look at the different ukulele tunings in relation to each other:

ubass: E A D G
baritone: D G B E
“standard” ukulele (tenor, concert, soprano): G (low or high) C E A
“alternate” tuning: A (low or high) D F# B

tonal ranges

• ubass (16 frets), tuned e1-a1-d2-g2: range e1 – b3
• baritone (19 frets, linear), tuned d3-g3-b3-e4: range d3 – b5
• gcea tenor (20 frets, linear), tuned g3-c4-e4-a4: range g3 – f6
  (all the green way including the dashed and dotted ends)
• gcea concert (17 frets, re-entrant), tuned g4-c4-e4-a4: range c4 – d6
  (solid green line only)
• iuke sopraninos (12 frets) are tuned an octave higher g5-c5-e5-a5:
  range c5 – a6 (not included in graphics below, sound reminds me of an egg slicer)