Training tools

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 (lbs)

Reps

Weight:

Reps:

258 lbs

Epley 258 lbs

Brzycki 258 lbs

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

% 1RM	Weight	Est. Reps	Plates / side
100%	258 lbs	1	2×45 + 1×10 + 1×5 + 1×2.5
95%	245 lbs	2	2×45 + 1×10
90%	232 lbs	4	2×45 + 1×2.5
85%	219 lbs	6	1×45 + 1×25 + 1×10 + 1×5 + 1×2.5
80%	206 lbs	8	1×45 + 1×25 + 1×10
75%	194 lbs	10	1×45 + 1×25 + 1×5
70%	181 lbs	12	1×45 + 2×10 + 1×2.5
65%	168 lbs	15	1×45 + 1×10 + 1×5 + 1×2.5
60%	155 lbs	20	1×45 + 1×10

Pick a program and we'll turn your 258 lbs into working weights for every session.

Pre-fill 258 lbs for Barbell Squat:

2d/wk

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

4d/wk

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

4d/wk

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