One Rep Max for 40 lbs × 8 reps

One Rep Max Calculator

What is the one rep max for 40 lbs × 8 reps?

Answer

Lifting 40 lbs for 8 reps gives an estimated one rep max of

50.7 lbs

Epley formula · an estimate from a set taken close to failure; accuracy depends on the exercise and the person and drops as reps grow

40 × (1 + 8 ÷ 30) ≈ 50.7 lbs

comparison of methods: six other published formulas give 48–51.3 lbs

Training Weights as a % of 1RM
% of 1RM	Working Weight
95%	48.2 lbs
90%	45.6 lbs
85%	43.1 lbs
80%	40.6 lbs
78.9%	40 lbs — this set
75%	38 lbs
70%	35.5 lbs
65%	33 lbs
60%	30.4 lbs

See Also

BMI Meaning - Check what given BMI means
BMI Calculator (Imperial) - Body Mass Index Calculator (ft/in/lbs)
BMI Calculator (Metric) - Body Mass Index Calculator (kg/cm)
Ideal Weight Calculator (Imperial) - Find out the Ideal Weight for a given Height in feet/inches
Ideal Weight Calculator (Metric) - Find out the Ideal Weight for a given Height in centimeters

One Rep Max Table for 40 lbs

Reps	One Rep Max	% of 1RM
2 reps	42.7 lbs	93.7%
3 reps	44 lbs	90.9%
4 reps	45.3 lbs	88.3%
5 reps	46.7 lbs	85.7%
6 reps	48 lbs	83.3%
7 reps	49.3 lbs	81.1%
8 reps	50.7 lbs	78.9%
9 reps	52 lbs	76.9%
10 reps	53.3 lbs	75%
11 reps	54.7 lbs	73.1%
12 reps	56 lbs	71.4%

FAQ

What is the one rep max for 40 lbs × 8 reps?

Lifting 40 lbs for 8 reps gives an estimated one rep max of 50.7 lbs

How much of my max is 40 lbs for 8 reps?

40 lbs for 8 reps works out at 78.9% of an estimated one rep max of 50.7 lbs.

What should I lift at 90% and 70% of that max?

90% of 50.7 lbs is 45.6 lbs and 70% is 35.5 lbs. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

See Also