Hip Thrust Calculator
Calculate barbell hip thrust one-rep max (1RM), training volume, bodyweight strength ratio, and glute hypertrophy target weights.
Hip Thrust 1RM Calculator
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What Is a Hip Thrust Calculator?
The Hip Thrust Calculator estimates your one-rep max (1RM) and optimal resistance training intensities for the barbell hip thrust—the premier horizontal exercise for gluteus maximus strength, hip extension power, and athletic development.
How to Use This Calculator
- Enter the weight lifted on your barbell hip thrust (in pounds or kilograms).
- Enter the clean repetitions completed with full hip extension (1 to 15 reps recommended for accuracy).
- Optionally enter your bodyweight and total sets performed.
- View your estimated 1RM, bodyweight multiple, and target hypertrophy weight zones.
Hip Thrust 1RM Formulation
1\text{RM}_{\text{Brzycki}} = \frac{W}{1.0278 - 0.0278 \cdot R} \quad ; \quad 1\text{RM}_{\text{Epley}} = W \cdot \left(1 + \frac{R}{30}\right)Where W is weight lifted and R is repetitions performed. The calculator averages both validated exercise science algorithms for maximum accuracy.
Worked Example
Scenario: A 160 lb lifter hip thrusting 275 lbs for 8 clean reps across 3 sets.
Weight: 275 lbs, Reps: 8.
Brzycki 1RM: 275 / (1.0278 - 0.0278 × 8) = 341 lbs.
Epley 1RM: 275 × (1 + 8 / 30) = 348 lbs.
Average 1RM: ~345 lbs (2.16x bodyweight). Total Volume: 275 × 8 × 3 = 6,600 lbs.
Tips & Key Notes
- Ensure full hip extension at the top: your shins should be vertical (90 degrees to the ground) and your ribs kept down to prevent lumbar hyperextension.
- Pause for a 1-second squeeze at the apex of every rep to maximize peak glute muscle fiber recruitment.
- Use a thick barbell pad or high-density foam roller to cushion the pelvic bones against heavy barbell pressure.
Frequently Asked Questions
What is a good barbell hip thrust weight for men and women?
Beginner: 1.0x bodyweight; Intermediate: 1.5x to 2.0x bodyweight; Advanced: 2.25x to 2.75x bodyweight; Elite: 3.0x+ bodyweight for a single rep.
Why can people hip thrust more weight than they can squat?
The hip thrust places peak mechanical tension on the glutes at full hip extension with a very short moment arm on the spine, whereas squats require spinal axial loading and quad/knee joint stability.
What rep range is best for glute growth on hip thrusts?
Research shows combining heavy sets (6–8 reps at 80%–85% 1RM) with moderate-to-high volume sets (10–15 reps at 70%–75% 1RM) yields optimal muscle hypertrophy and strength.
Where should my feet be placed during a hip thrust?
When your hips are fully locked out at the top, your shins should be perpendicular to the floor (vertical). Placing feet too far forward engages hamstrings; placing them too close shifts tension to the quads.
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