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PesaFit
PesaFit

Progressive overload calculator for the gym

Strength training

By Jesús Narváez Tamés ·

Generate a week-by-week load progression for a given lift, based on your 1RM and a linear or undulating model.

Weekly peak
90kg

Weight progression

Red line: current 1RM (100 kg)
70 kg
73 kg
75.5 kg
78.5 kg
81.5 kg
84.5 kg
87 kg
90 kg
S1S4S8

Week-by-week plan

Week% 1RMSets x repsWeight (kg)
170 %3 × 1070
273 %3 × 973
376 %4 × 875.5
479 %4 × 778.5
581 %4 × 681.5
684 %4 × 584.5
787 %5 × 487
890 %5 × 390
Disclaimer: this calculator provides educational information and estimates based on standard formulas. It is not a substitute for personalised advice from a doctor, nutritionist or trainer. Consult a professional before making significant changes to your diet or training.

Progressive overload is the only principle that truly matters for long-term strength and muscle gains. It means gradually increasing the stimulus: weight, reps, sets or tempo.

Linear vs undulating progression

Linear: add weight or reps each week (ideal for beginners/intermediates). Undulating: alternate heavier and lighter weeks within a block (better for intermediates/advanced, avoids stalling). Double progression: push reps to a ceiling, then add weight and reset reps.

How much to add

Beginners: 2.5-5 kg/week on the main lifts. Intermediates: 2.5 kg every 2-4 weeks. Advanced: only 5-10 kg/year on their 1RM, so they depend on microprogressions (0.5 kg plates, RIR/RPE, range of motion, tempo). Don't force big jumps: small and steady wins.

Frequently asked questions

How much should I add each week?+

Beginners: 2.5-5 kg/week on the big lifts (squat, deadlift, bench press). Intermediates: 2.5 kg every 2-4 weeks. Advanced: monthly cycles with periodisation.

What is progressive overload?+

The core principle of strength training: progressively increase the stimulus (weight, reps, volume) to force adaptation. Without overload there are no long-term gains.