One Rep Max for 37.5 kg × 3 reps

One Rep Max Calculator
One Rep Max for
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What is the one rep max for 37.5 kg × 3 reps?

Answer

Lifting 37.5 kg for 3 reps gives an estimated one rep max of
41.3 kg

A set of 3 reps at 37.5 kg is

90.9%

of your estimated one rep max

Note: this is an estimate, not a tested max. Rep-based formulas are closest at 2–6 reps and drift further apart as the set gets longer. Warm up and use a spotter before attempting a true single.

How to Calculate One Rep Max

Epley Formula: 1RM = weight × (1 + reps ÷ 30)

The Epley formula assumes that every extra repetition you can complete corresponds to roughly 3.33% more weight on the bar. Put your set into it:

37.5 × (1 + 3 ÷ 30)

=

37.5 × 1.1

≈

41.3 kg

Training Weights as a % of 1RM

Percentages of your estimated max of 41.3 kg, the way most strength programmes prescribe load:

% of 1RMWorking Weight
95%39.2 kg
90%37.1 kg
85%35.1 kg
80%33 kg
75%30.9 kg
70%28.9 kg
65%26.8 kg
60%24.8 kg

Other One Rep Max Formulas

Published 1RM formulas disagree, and the gap widens with the rep count. This page answers with Epley; here is what the others give for 37.5 kg × 3 reps:

FormulaEstimated 1RM
Epley41.3 kg
Brzycki39.7 kg
Lombardi41.9 kg
O'Conner40.3 kg
Wathan41.1 kg
Lander40.2 kg
Mayhew42.7 kg

Related Calculations

See Also

One Rep Max Calculator

This calculator estimates your one-rep max (1RM) — the heaviest weight you could lift for a single repetition — from a set you have already completed. For example, it can help you find out what is the one rep max for 37.5 kg × 3 reps? (The answer is: 41.3 kg). Enter the weight you lifted (e.g. 37.5), pick pounds or kilograms, and enter how many reps you managed (e.g. 3).
Recalculate with different values ↑

One Rep Max Table for 37.5 kg

RepsOne Rep Max% of 1RM
2 reps40 kg93.8%
3 reps41.3 kg90.9%
4 reps42.5 kg88.2%
5 reps43.8 kg85.7%
6 reps45 kg83.3%
7 reps46.3 kg81.1%
8 reps47.5 kg78.9%
9 reps48.8 kg76.9%
10 reps50 kg75%
11 reps51.3 kg73.2%
12 reps52.5 kg71.4%

FAQ

What is the one rep max for 37.5 kg × 3 reps?

Lifting 37.5 kg for 3 reps gives an estimated one rep max of 41.3 kg

How much of my max is 37.5 kg for 3 reps?

37.5 kg for 3 reps works out at 90.9% of an estimated one rep max of 41.3 kg.

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

90% of 41.3 kg is 37.1 kg and 70% is 28.9 kg. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

See Also