1RM Calculator
Estimate your one-rep max for any lift using the proven Epley formula. Get instant working weights for strength and hypertrophy training.
Choose Your Lift
Select a lift to calculate your estimated 1RM and get training percentages.
Weighted Pull-Up 1RM Calculator
+ BodyweightCalculate your weighted pull-up 1RM including bodyweight. Essential for tracking pulling strength and predicting skill readiness.
Weighted Dip 1RM Calculator
+ BodyweightCalculate your weighted dip 1RM including bodyweight. Track pushing strength for muscle-up and planche development.
Bench Press 1RM Calculator
Calculate your bench press 1RM. The classic upper body pushing benchmark for horizontal pressing strength.
Squat 1RM Calculator
Calculate your squat 1RM. The foundational lower body strength movement and key indicator of total body strength.
Deadlift 1RM Calculator
Calculate your deadlift 1RM. The ultimate test of full-body strength and posterior chain development.
How the 1RM Calculator Works
Enter Your Set
Input the weight you lifted and how many reps you completed. For weighted calisthenics, add your bodyweight.
Get Your 1RM
We use the Epley formula: 1RM = weight × (1 + reps/30)
Training Weights
Get recommended working weights: 70% for hypertrophy, 80% for strength, 85-90% for heavy work.
Why Track Your 1RM?
Set Clear Goals
Knowing your current 1RM lets you set specific, measurable strength targets.
Track Real Progress
1RM gives you an objective number to track over time, beyond just "feeling stronger."
Program Accurately
Use percentage-based programming with confidence when you know your actual max.
Predict Skill Readiness
Weighted pull-up and dip strength strongly predict front lever, planche, and muscle-up potential.