// Strength Calculators

Leg Press 1RM calculator

Estimate your leg press 1RM from a recent set.

Your details

Your result

Estimated leg press 1RM
91.7kg
90% (3 reps)
82.5kg
80% (8 reps)
73.3kg
70% (12 reps)
64.2kg
  • Averaged from the Epley and Brzycki formulas. Most accurate at 1–8 reps.

Estimates are for general guidance only and are not medical advice. For a personalised plan, book a free guided tour at RPM Gym.

Estimate your leg press one-rep maximum (1RM) using this calculator. Input the weight you lifted and the repetitions you completed during a recent challenging set. Your 1RM represents the heaviest weight you can lift for a single, full-range repetition. This calculation provides an excellent benchmark for your current lower body strength without the risk of attempting a true 1RM lift.

Your calculated 1RM provides a foundation for structuring your leg workouts. The calculator also provides percentages of your 1RM, which are crucial for effective periodization. For example, lifting at 70-80% of your 1RM is ideal for hypertrophy (muscle growth), while 85%+ targets strength development. Use these percentages to guide your rep schemes and progressive overload.

To maximize your leg strength and development, regularly re-evaluate your 1RM. As your strength improves, your 1RM will increase, requiring adjustments to your training weights. For personalized guidance on interpreting your results and integrating them into a comprehensive training plan, consider booking a free guided tour of RPM Gym to discuss your goals with our expert coaches.

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// Frequently Asked

Questions, answered.

What is a 1RM?

A 1RM (one-rep maximum) is the maximum weight you can lift for a single, complete repetition of an exercise. It's a key indicator of your absolute strength for that specific movement.

Why should I calculate my leg press 1RM?

Calculating your leg press 1RM helps you track progress, set appropriate training weights for different goals (strength, hypertrophy, endurance), and safely estimate your maximum lift without needing to perform a risky true 1RM attempt.

How accurate is this calculator?

This calculator provides an estimate based on common predictive formulas. Its accuracy depends on the effort and form used during your input set. For the most precise measurement, consistent form and maximal effort on the input set are crucial.

How often should I re-calculate my 1RM?

Re-calculate your 1RM every 4-8 weeks, or after completing a training cycle, to reflect improvements in your strength. This ensures your training percentages remain relevant to your current capabilities.

Can RPM Gym help me use this leg press 1rm calculator | estimate your leg press max result?

Yes. Bring your result to a free tour or coaching conversation, and the RPM team can help connect it to a realistic training and nutrition plan.

Make the numbers count.

Book a free guided tour at RPM Gym Abu Dhabi and turn your targets into a real plan.

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