This Bench Press Calculator can be used to quickly and easily determine your one-repetition max according to the number of repetitions you have completed for a given weight. You just need to enter number of repetitions and weight lifted details in this user-friendly tool. Press the calculate button to avail the one rep max value as result.
The one-rep max is also known as the One Repetition Maximum. It is the weight you can lift for a single repetition of a given exercise.
It is important for an individual to know & calculate one rep max. We will now see 2 main reasons below.
There are a few different methods invented by different people for calculating one rep max. Following are the most used formulae.
Brzycki: 1 RM = w / (1.0278 - (0.0278 × r))
Baechle: 1 RM = w × (1 + (0.033 × r))
Epley: 1 RM = (0.033 × r × w) + w
Lander: 1 RM = (100 × w) / (101.3 - 2.67123 × r)
Lombardi: 1 RM = w × r 0.1
Mayhew et al.: 1 RM = (100 × w) / (52.2 + (41.9 × e-0.055 × r))
O'Conner et al.: 1 RM = w × (1 + 0.025 × r)
Wathan: 1 RM = (100 × w) / (48.8 + (53.8 × e-0.075 × r))
Here, 1 RM = the one rep max,
w = lifted weight,
r = repetition number
e = the base of natural logarithm = 2.718282
We can calculate the one-rep max manually using the formula. Let us see how to calculate using manual steps:
Performing the manual calculations becomes hectic sometimes, so to avoid this use the calculators of several different kinds from Arithmetic Calculator.
Calculate the one-rep max (1RM) for a person who performs 7 reps lifting 56 kg.
Let us use the Lombardi formula for 1RM.
1 RM = w × r 0.1
& r = 10 repetitions
1 RM = w × r 0.1 = 56 × 70.1 = 56 × 1.21 = 67.76 kg
Here, 1 rep max of a person who can do 7 reps of 56kg is 67.76 kg.
1. What is a good ratio for bench press?
The ideal squat to bench press ratio is 167% for women and 156% for men.
2. How common is a 225 bench?
Men reaching 225 pounds are rare to find since the typical weight of a strong male is about 200 pounds and the men who are reasonably trained are able to reach 225 pounds.
3. How much can the average man bench press?
For a male lifter, the average man bench press 214 lb (1RM).
4. How much should a 200-pound man bench?
For a man weighing 200 pounds, a bench press or 225 pounds would be regarded as above average.