A Major — Left Hand Piano Fingering
See the standard fingering for any major or minor piano scale on an interactive keyboard — right hand, left hand, one or two octaves, with thumb-under crossings marked.
A — Major
Left hand
↷ — finger crosses over the thumb
Descending uses the same fingers in reverse order.
This left-hand-only chart for A Major keeps the same 5-4-3-2-1-3-2-1 shape as the other sharp keys, but with C♯, F♯ and G♯ all falling inside the run — the crossovers land on E and on the next octave's B, both comfortably clear of the black keys.
Three sharps in one octave can make a left hand feel busier than it is; isolating it shows that the actual finger motion never changes, which is reassuring before adding the right hand's matching pattern back in.
Once the crossovers feel secure on their own, check them against the right-hand-only chart for A major or move to the full tool for both hands together.