Arms · Dumbbell

Dumbbell Single Arm Tricep Extension

How to do the dumbbell single arm tricep extension, the muscles it works, and the mistakes to avoid. Pulled straight from the Kovo app's exercise library.

Animated demonstration of the Dumbbell Single Arm Tricep Extension
Equipment
Dumbbell
Difficulty
Intermediate
Logged as
Weighted reps
Movement
Extension
Mechanic
Isolation

How to do it

Hold a dumbbell overhead with one hand, elbow bent and close to your ear. Extend your arm fully, then lower the dumbbell behind your head under control. Keep your core tight to avoid arching.

  1. 1Feel your triceps working as you extend the dumbbell overhead
  2. 2Keep your elbow pointing up and stable to isolate the muscle
  3. 3Squeeze at the top and lower under control

Common mistakes

  • Avoid letting your elbow flare out or move forward
  • Don't arch your back; keep your ribs down and core tight
  • Avoid bending your wrist; keep it straight

Muscles worked

The dumbbell single arm tricep extension mainly works the triceps, with the lower chest assisting.

  • TricepsPrimary
  • Lower ChestSupport
  • ForearmsMinor

Dumbbell Single Arm Tricep Extension strength standards

See how your dumbbell single arm tricep extension ranks, from Bronze to Champion. These are the same standards the Kovo app uses to rank your lifts.

  • Bronzee1RM40 lb
  • Silvere1RM67.5 lb
  • Golde1RM105 lb
  • Platinume1RM145 lb
  • Diamonde1RM170 lb
  • Champione1RM190 lb

Find your rank

Enter your best set. We estimate your 1RM and match it to a tier.

Kovo tracks this rank automatically as you train, across every lift, and levels you up as you get stronger.

Kovo programs the dumbbell single arm tricep extension for you and tracks it every session.

We build your whole program, drop the right lifts into each workout, and adjust your weights as you get stronger. Free on iOS and Android.

More triceps exercises

See all triceps exercises →

Last reviewed April 2026.