1RM Squat Equation:
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The 1RM (One Repetition Maximum) is the maximum amount of weight you can lift for one complete repetition of a given exercise. For squats, this helps determine your maximal strength level and is used to set appropriate training weights.
The calculator uses the Epley formula:
Where:
Explanation: The equation estimates your theoretical maximum based on submaximal loads. It's most accurate for 2-10 repetitions.
Details: Knowing your 1RM helps design strength training programs by determining appropriate percentages for different training goals (endurance, hypertrophy, strength).
Tips: Enter the maximum weight you can lift with good form for the given repetitions. For best results, test with 3-8 reps rather than very high reps.
Q1: Why calculate 1RM instead of testing it directly?
A: Testing true 1RM is physically demanding and increases injury risk. Calculation from submaximal loads is safer.
Q2: How accurate is the Epley formula?
A: It's reasonably accurate for most people within 2-10 rep range. Accuracy decreases beyond 10 reps.
Q3: Should I use kg or pounds?
A: The calculator works with any unit as long as you're consistent. The result will be in the same unit as your input.
Q4: How often should I recalculate my 1RM?
A: Every 4-8 weeks for beginners, 8-12 weeks for advanced lifters, or whenever your training capacity changes noticeably.
Q5: Can I use this for other exercises?
A: While designed for squats, it can estimate 1RM for similar compound lifts like bench press or deadlift, though accuracy may vary.