Deadlift 1RM Calculator
Calculate Your One Rep Max for Deadlifts
Free scientific calculator to predict your deadlift one-rep max (1RM). Get accurate estimates without the risk of actual maximum testing.
1RM Calculator
Estimate your one-rep maximum with proven formulas. Also calculate Rep Max and Percentages of 1RM.
Results
Example 1RM Results using different formulas:
- MultiModal Formula: 100kg bench press for 5 reps = 113.6kg 1RM
- Brzycki Formula: 100kg squat for 5 reps = 114.5kg 1RM
- Epley Formula: 100kg deadlift for 5 reps = 116.7kg 1RM
Rep Max
Example Rep Max calculations for 100kg 1RM:
- 3RM (3 Rep Max): 95kg
- 5RM (5 Rep Max): 87kg
- 10RM (10 Rep Max): 75kg
Percentages of 1RM
Example percentages of 100kg 1RM:
- 90% of 1RM: 90kg - Typically used for heavy singles and doubles
- 80% of 1RM: 80kg - Common working weight for strength training
- 70% of 1RM: 70kg - Often used for higher rep training
Why Choose Our Calculator
Our deadlift 1RM calculator uses advanced machine learning algorithms to provide highly accurate predictions. With an R² value of 0.985 and an average error rate of just 3.1%, it's one of the most precise tools available. The algorithm has been validated through extensive testing with 987 lifters across different experience levels.
- Multi-modal Data Fusion Technology
- Dynamic Individual Adaptation (Coming Soon)
- Real-time Fatigue Compensation (Coming Soon)
- Biomechanical Optimization Coefficients
- AI-powered Continuous Optimization
About Deadlifts
The deadlift is a powerful compound exercise that engages nearly every major muscle group in the body. It's particularly effective for developing posterior chain strength, including the back, glutes, and hamstrings.
Form Tips:
- Keep the bar close to your shins
- Brace your core before lifting
- Keep your back straight throughout
- Push through your heels
- Engage your lats to protect your spine
Frequently Asked Questions
How accurate is this deadlift calculator?
Our calculator achieves 98.5% correlation with actual tested 1RMs, based on validation data from 987 lifters. The average error rate is just 3.1%, making it significantly more accurate than traditional formulas.1RM Calculator Homepage.
What deadlift style is this calculator calibrated for?
Our calculator is optimized for both conventional and sumo deadlifts. Our algorithm considers biomechanical characteristics of different body structures, including height, arm length, and leg length ratios. Validated through testing with 987 lifters of various body types, it accurately predicts 1RM for both styles, automatically adjusting parameters based on your lifting performance data.
Is it safe to test my actual deadlift 1RM?
Testing your actual deadlift 1RM can be risky without proper preparation and form. Our calculator provides a safe alternative by accurately predicting your 1RM from submaximal weights.BMI and Strength Training Guide.
Why is your calculator better than others?
Unlike traditional calculators that use simple formulas, our system employs advanced machine learning algorithms that consider multiple factors like lifting style, bar speed, fatigue, and individual biomechanics.
How often should I test my deadlift 1RM?
We recommend recalculating your deadlift 1RM every 4-6 weeks for optimal progress tracking. However, you can use our calculator anytime to safely gauge your strength gains.
Are there other strength training project calculators?
Yes, we also provide 1RM calculators for other two major strength training projects: Bench Press 1RM Calculator and Squat 1RM Calculator.