hip thrust calculator

Why Use a Hip Thrust Calculator?

The hip thrust is one of the most effective exercises for building glutes, improving sprint speed, and developing horizontal force production. But many lifters guess their training loads. A calculator helps you set weights based on performance rather than guesswork.

By entering a completed set, you can estimate your current strength and pick better loads for your next training block. This is especially useful when you don’t want to test a true max.

What This Calculator Gives You

• Estimated 1RM (based on multiple common formulas)
• Training max (90% of estimated 1RM)
• Suggested working weights for 5, 8, 10, and 12 reps
• Optional relative strength ratio if you enter bodyweight

How to Use the Hip Thrust Calculator

• Select your preferred unit (lb or kg).
• Enter the load you lifted for your set.
• Enter how many clean reps you completed.
• Optionally enter bodyweight to see relative strength.
• Click Calculate and use the outputs to guide your next sessions.

For best accuracy, use a hard set with good technique and 1-12 reps. Very high-rep sets can inflate 1RM estimates.

How the Formula Works

This page estimates your hip thrust max using an average of three widely used prediction models: Epley, Brzycki, and Lombardi. Averaging can smooth out errors that happen when one formula over- or under-estimates for a specific rep range.

Estimated 1RM Models

• Epley: weight × (1 + reps/30)
• Brzycki: weight × 36 / (37 − reps)
• Lombardi: weight × reps^0.10

If you enter 1 rep, your estimated 1RM is simply your entered load.

Programming Your Hip Thrust Training

Strength Focus

• 3-5 sets of 3-6 reps
• Longer rest periods (2-4 minutes)
• Use the 80-90% range of estimated 1RM

Hypertrophy Focus

• 3-5 sets of 6-12 reps
• Moderate rest periods (60-120 seconds)
• Use the 65-80% range of estimated 1RM

Progression Tips

• Add 2.5-10 lb (or 1-5 kg) when you hit the top of your rep range with clean reps.
• Keep 1-2 reps in reserve on most sets to maintain quality and recovery.
• Retest using this calculator every 4-6 weeks.

Technique Checklist for Better Glute Results

• Set upper back on bench edge and keep ribcage stacked over pelvis.
• Drive through mid-foot and heel, not your toes.
• Keep chin tucked and avoid overextending your lower back at lockout.
• Pause briefly at the top and squeeze glutes hard.
• Lower under control to keep tension and protect your setup.

Frequently Asked Questions

Is this a true max?

No. It’s an estimate to guide training. Day-to-day readiness, technique, and equipment setup can all affect your real max.

How often should I recalculate?

Every few weeks is enough for most lifters, or whenever your working sets become clearly easier.

What is a good relative hip thrust strength ratio?

As a simple benchmark, around 1.0x bodyweight is a solid base, 1.5x is strong, and 2.0x+ is very advanced. Individual structure and training age matter, so use this as a guide, not a rule.

Note: This calculator is for educational use and does not replace individualized coaching or medical advice.