About

Wendler's 5/3/1 method structures progressive overload across 4-week mesocycles using submaximal training loads. The system derives a Training Max (TM) from your estimated one-rep maximum (1RM) at 85 - 90%, then prescribes ascending percentage sets across three intensity weeks plus a deload. Miscalculating your TM by even 5% compounds errors across cycles, leading to stalled progress or injury from exceeding recoverable volume. This calculator applies the Epley formula for 1RM estimation, rounds loads to your barbell’s plate increments, and generates warm-up sets automatically.

The tool assumes standard progression and does not account for individual recovery capacity or accessory work periodization. Pro tip: re-test your 1RM inputs every 2-3 cycles rather than relying on AMRAP extrapolations alone, as fatigue masking inflates estimated maxes over time.

Formulas

The estimated one-rep maximum uses the Epley formula:

1RM = w × (1 + r30)

where w = weight lifted and r = repetitions completed. When r = 1, the formula returns w directly. The Training Max is then derived:

TM = 1RM × TM%

where TM% is typically 0.85 - 0.90. Each working set load is computed as:

Load = round(TM × Set%)

Rounding applies to the nearest 5 lb or 2.5 kg depending on unit system. The plate loading algorithm subtracts bar weight from the target load, halves the remainder for per-side loading, then greedily assigns plates from largest to smallest available denomination.

Reference Data

Week	Set 1	Set 2	Set 3 (Top Set)	Purpose
Week 1 (5s)	65% × 5	75% × 5	85% × 5+	Volume accumulation
Week 2 (3s)	70% × 3	80% × 3	90% × 3+	Intensity emphasis
Week 3 (5/3/1)	75% × 5	85% × 3	95% × 1+	Peak intensity
Week 4 (Deload)	40% × 5	50% × 5	60% × 5	Recovery & supercompensation
Warm-Up Protocol (All Weeks)
-	40% × 5	50% × 5	60% × 3	CNS activation & groove
Cycle Progression Increments
Upper Body	+5 lb / 2.5 kg per cycle to TM			OHP & Bench Press
Lower Body	+10 lb / 5 kg per cycle to TM			Squat & Deadlift
Common Training Max Percentages
Beginners	85% of 1RM			More conservative start
Intermediate	90% of 1RM			Standard recommendation
Advanced (5s PRO)	85% of 1RM			No AMRAP, fixed reps
Standard Plate Inventory
Imperial	45, 35, 25, 10, 5, 2.5 lb			Bar = 45 lb
Metric	25, 20, 15, 10, 5, 2.5, 1.25 kg			Bar = 20 kg

Frequently Asked Questions

Use a recent set of known weight and reps (ideally 3-5 reps). The Epley formula estimates your 1RM as weight × (1 + reps/30). Accuracy degrades above 10 reps due to endurance factors outweighing pure strength. For best results, use a heavy set of 3-5 reps performed to technical failure.

Wendler's later publications recommend 85% for most lifters, reserving 90% for those with significant training age who can recover adequately. Starting too high is the most common programming error - if you cannot hit 5 clean reps at your Week 1 top set (85% of TM), your TM is too high.

The + indicates an AMRAP (As Many Reps As Possible) set. You perform the prescribed minimum reps, then continue with good form until technical breakdown. This autoregulates intensity and provides data for estimating new 1RM values. In 5s PRO variants, the + is removed and all sets are fixed at the prescribed reps.

Rounding to the nearest 5 lb introduces up to ±2.5 lb error per set. Over multiple cycles, this is negligible because the AMRAP set autoregulates actual intensity. However, for lighter lifts like OHP where 5 lb represents a larger percentage, consider using fractional plates (1.25 lb or 0.5 kg) if available.

Reset when you cannot achieve the minimum prescribed reps on your top set for two consecutive cycles. Wendler recommends dropping the TM by 3 cycles' worth of progression (e.g., -15 lb for upper body, -30 lb for lower body) and rebuilding. The 7-week protocol alternates TM test weeks to catch this earlier.

This calculator generates the core 5/3/1 working sets and warm-ups. Joker Sets are autoregulated additions (typically +5-10% above your top set) performed only on days you feel strong - they cannot be pre-programmed. FSL means repeating your first working set for 3-5 sets of 5-8 reps after the main work; use the displayed Set 1 weight for that purpose.