Plank Hold Test Calculator

Plank Hold Test Calculator

How long should you be able to hold a plank? Enter your best plank hold time and this calculator rates your core endurance against general adult benchmarks. Use it to test trunk stability, track progress as your core gets stronger, or set a realistic next target — all from a single bodyweight hold with no equipment.

A front plank held with a straight, braced body is a simple test of core (trunk) muscular endurance. As a rough adult guide: under 30 seconds is poor, around 60 seconds is average, 2 minutes is good and beyond 3 minutes is excellent. Form fails before muscles do for most people, so stop when your hips sag or rise — extra time with broken form does not count and can strain the lower back.