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Fitness Calculators

Working weights, loaded plates, and a plan for the warm-up. Keep the numbers close to your training.

1RM Estimator

Calculate your one-rep max from reps.

Unit:
Weight:
Reps:

Estimated 1RM

300 lbs
Epley 300 lbs
Brzycki 300 lbs

Headline 1RM is the consensus average of Epley and Brzycki formulas (up to 10 reps), matching your workout progress estimates.

% 1RMWeightEst. RepsPlates / side
100%300 lbs12×45 + 1×25 + 1×10 + 1×2.5
95%285 lbs22×45 + 1×25 + 1×5
90%270 lbs42×45 + 2×10 + 1×2.5
85%255 lbs62×45 + 1×10 + 1×5
80%240 lbs82×45 + 1×5 + 1×2.5
75%225 lbs102×45
70%210 lbs121×45 + 1×25 + 1×10 + 1×2.5
65%195 lbs151×45 + 1×25 + 1×5
60%180 lbs201×45 + 2×10 + 1×2.5

Put this max to work

Pick a program and we'll turn your 300 lbs into working weights for every session.

Browse programs
Pre-fill 300 lbs for Barbell Squat:

Hatch Squat Program

2d/wk

12-week twice-weekly Back Squat + Front Squat specialization cycle.

Candito 6-Week Strength

4d/wk

6-week peaking cycle built around Squat, Bench, and Deadlift.

Juggernaut Method 2.0

4d/wk

16-week block periodization moving through 10s, 8s, 5s, and 3s waves.