AutoCAD vs Civil 3D: what carries over and what Civil 3D adds
Civil 3D is built on AutoCAD, so every AutoCAD command alias — L, C, TR, EX, O, M, CO, RO, H, LA, PR and the rest — works unchanged inside Civil 3D. The table shows them in the AutoCAD column with a dash in the Civil 3D column because Autodesk does not document them a second time under the Civil 3D name; the Civil 3D column holds only the keys Autodesk lists specifically for Civil 3D, most of which belong to Project Explorer.
| Task | AutoCAD | Civil 3D |
|---|---|---|
| Line | L | — |
| Circle | C | — |
| Trim | TR | — |
| Extend | EX | — |
| Offset | O | — |
| Move | M | — |
| Copy | CO | — |
| Rotate | RO | — |
| Hatch | H | — |
| Layer properties | LA | — |
| Properties palette | PR | — |
| Zoom extents | Z + E | — |
| Pan | P | P |
| Regen | RE | — |
| Save | Ctrl + S | Ctrl + S |
| Repeat last command | — | Ctrl + J |
| Copy list items (Project Explorer) | — | Ctrl + C |
| Next layout tab | — | Ctrl + Page Down |
| Next file tab | — | Ctrl + Tab |
That distinction answers the common question of whether everything in AutoCAD can be done in Civil 3D: for drawing, editing and viewing commands the answer is yes, with the same keystrokes, because the command line and alias file are the AutoCAD ones. What Civil 3D adds is not new aliases but new objects — alignments, profiles, surfaces, corridors, pipe networks — driven from the ribbon, the Toolspace palette and Project Explorer rather than from two-letter aliases. Its own documented shortcuts are therefore about navigating those panels: Ctrl + J and Ctrl + M repeat the last command, Ctrl + Tab and Ctrl + F6 move between file tabs, and Ctrl + Page Up / Page Down step through layouts.
Both pages on this site mark their sources. The AutoCAD table is the Autodesk Shortcut Keys Reference; the Civil 3D page combines the eight Project Explorer shortcuts Autodesk publishes for Civil 3D with the inherited AutoCAD set and says so in its source note, so that a reader searching for a Civil 3D key finds the AutoCAD alias rather than a claim that Civil 3D has none. Aliases can be edited in the acad.pgp file, and firms that customise it should expect the same customisation to apply to both products since they share the file.
Two practical notes for people moving between them. Civil 3D's Project Explorer keys only respond while that window has focus, so P pans to the selected object there but is the AutoCAD Pan alias at the command line. And the function keys behave identically in both — F8 ortho, F3 object snap, F12 dynamic input — because they come from the shared AutoCAD core rather than from either product's own list.
Full references: AutoCAD (74) · Civil 3D (83) · all comparisons