One Rep Max for 40 lbs × 12 reps

One Rep Max Calculator

What is the one rep max for 40 lbs × 12 reps?

Answer

Lifting 40 lbs for 12 reps gives an estimated one rep max of

56 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

At 12 reps the formulas drift apart — the others give 51.3–57.8 lbs: treat 56 lbs as a rough guide.

40 × (1 + 12 ÷ 30) = 56 lbs

Training Weights as a % of 1RM
% of 1RM	Working Weight
95%	53.2 lbs
90%	50.4 lbs
85%	47.6 lbs
80%	44.8 lbs
75%	42 lbs
71.4%	40 lbs — this set
70%	39.2 lbs
65%	36.4 lbs
60%	33.6 lbs

Related Calculations

56 lbs to kg - 56 pounds ≈ 25.4 kg

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 × 12 reps?

Lifting 40 lbs for 12 reps gives an estimated one rep max of 56 lbs

How much of my max is 40 lbs for 12 reps?

40 lbs for 12 reps works out at 71.4% of an estimated one rep max of 56 lbs.

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

90% of 56 lbs is 50.4 lbs and 70% is 39.2 lbs. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

See Also