One Rep Max for 27.5 kg × 4 reps

One Rep Max Calculator
One Rep Max for
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What is the one rep max for 27.5 kg × 4 reps?

Answer

Lifting 27.5 kg for 4 reps gives an estimated one rep max of
31.2 kg

A set of 4 reps at 27.5 kg is

88.2%

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:

27.5 × (1 + 4 ÷ 30)

≈

27.5 × 1.1333

≈

31.2 kg

Training Weights as a % of 1RM

Percentages of your estimated max of 31.2 kg, the way most strength programmes prescribe load:

% of 1RMWorking Weight
95%29.6 kg
90%28.1 kg
85%26.5 kg
80%24.9 kg
75%23.4 kg
70%21.8 kg
65%20.3 kg
60%18.7 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 27.5 kg × 4 reps:

FormulaEstimated 1RM
Epley31.2 kg
Brzycki30 kg
Lombardi31.6 kg
O'Conner30.3 kg
Wathan31.2 kg
Lander30.3 kg
Mayhew32 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 27.5 kg × 4 reps? (The answer is: 31.2 kg). Enter the weight you lifted (e.g. 27.5), pick pounds or kilograms, and enter how many reps you managed (e.g. 4).
Recalculate with different values ↑

One Rep Max Table for 27.5 kg

RepsOne Rep Max% of 1RM
2 reps29.3 kg93.8%
3 reps30.3 kg90.9%
4 reps31.2 kg88.2%
5 reps32.1 kg85.7%
6 reps33 kg83.3%
7 reps33.9 kg81.1%
8 reps34.8 kg78.9%
9 reps35.8 kg76.9%
10 reps36.7 kg75%
11 reps37.6 kg73.2%
12 reps38.5 kg71.4%

FAQ

What is the one rep max for 27.5 kg × 4 reps?

Lifting 27.5 kg for 4 reps gives an estimated one rep max of 31.2 kg

How much of my max is 27.5 kg for 4 reps?

27.5 kg for 4 reps works out at 88.2% of an estimated one rep max of 31.2 kg.

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

90% of 31.2 kg is 28.1 kg and 70% is 21.8 kg. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

See Also