TETSUCable Curl vs Smith Machine Bicep Curl
The Cable Curl and the Smith Machine Bicep Curl both train the biceps as their primary muscle. The Cable Curl uses a cable while the Smith Machine Bicep Curl uses a smith machine. Here is how they compare and when to pick each.
Side-by-side comparison
| Cable Curl | Smith Machine Bicep Curl | |
|---|---|---|
| Primary muscle | biceps | biceps |
| Body part | upper arms | upper arms |
| Supporting muscles | forearms | forearms |
| Equipment | cable | smith machine |
| Steps in our guide | 7 | 8 |
How each one starts
Cable Curl — first steps
- Stand facing the cable machine with your feet shoulder-width apart.
- Grasp the cable attachment with an underhand grip, palms facing up.
Smith Machine Bicep Curl — first steps
- Adjust the height of the smith machine bar to be at waist level.
- Stand facing the smith machine with your feet shoulder-width apart.
Full step-by-step guides are linked below.
Which should you choose?
The Cable Curl keeps constant tension on the muscle through the whole range of motion. The Smith Machine Bicep Curl fixes the bar path so you can push close to failure with less balance demand. If your gym has both options, neither is a wrong choice: pick the one that feels strongest through a full range, and swap after 6 to 8 weeks to keep the biceps adapting.
Full form guides
Common questions
Is the Cable Curl better than the Smith Machine Bicep Curl?
Neither is universally better — both train the biceps as the primary mover. The Cable Curl keeps constant tension on the muscle through the whole range of motion, while the Smith Machine Bicep Curl fixes the bar path so you can push close to failure with less balance demand. Choose based on your equipment and which movement you can progress consistently.
Can I do both the Cable Curl and the Smith Machine Bicep Curl in the same program?
Yes, but usually not in the same session — they overlap heavily on the biceps. A common setup is one as your main movement and the other on a second training day, or alternating them block by block.
Do the Cable Curl and the Smith Machine Bicep Curl work the same muscles?
Yes — the primary muscle is the same (biceps) and both rely on the same supporting muscles: forearms.
Track it in Tetsu
Tetsu tracks both movements separately, keeps your PRs per exercise, and tells you which one is actually progressing. Free to start.