One Rep Max for 155 kg × 9 reps

One Rep Max Calculator
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What is the one rep max for 155 kg × 9 reps?

Answer

Lifting 155 kg for 9 reps gives an estimated one rep max of
201.5 kg

A set of 9 reps at 155 kg is

76.9%

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:

155 × (1 + 9 ÷ 30)

=

155 × 1.3

=

201.5 kg

Training Weights as a % of 1RM

Percentages of your estimated max of 201.5 kg, the way most strength programmes prescribe load:

% of 1RMWorking Weight
95%191.4 kg
90%181.4 kg
85%171.3 kg
80%161.2 kg
75%151.1 kg
70%141.1 kg
65%131 kg
60%120.9 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 155 kg × 9 reps:

FormulaEstimated 1RM
Epley201.5 kg
Brzycki199.3 kg
Lombardi193.1 kg
O'Conner189.9 kg
Wathan204.3 kg
Lander200.6 kg
Mayhew199.4 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 155 kg × 9 reps? (The answer is: 201.5 kg). Enter the weight you lifted (e.g. 155), pick pounds or kilograms, and enter how many reps you managed (e.g. 9).
Recalculate with different values ↑

One Rep Max Table for 155 kg

RepsOne Rep Max% of 1RM
2 reps165.3 kg93.8%
3 reps170.5 kg90.9%
4 reps175.7 kg88.2%
5 reps180.8 kg85.7%
6 reps186 kg83.3%
7 reps191.2 kg81.1%
8 reps196.3 kg78.9%
9 reps201.5 kg76.9%
10 reps206.7 kg75%
11 reps211.8 kg73.2%
12 reps217 kg71.4%

FAQ

What is the one rep max for 155 kg × 9 reps?

Lifting 155 kg for 9 reps gives an estimated one rep max of 201.5 kg

How much of my max is 155 kg for 9 reps?

155 kg for 9 reps works out at 76.9% of an estimated one rep max of 201.5 kg.

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

90% of 201.5 kg is 181.4 kg and 70% is 141.1 kg. Heavy strength work usually sits at 85–95%, while volume and technique work sits nearer 65–75%.

See Also