Max One Rep Calculator

1-20 reps max calculator and multiplier to estimate your max one rep

Uses your “any” set to failure within the rep range of 1-20

Then use that information to fill in the formula (actual weight benched in pounds times the multiplier of reps done)


150 pounds – you get 10 reps to failure

Use the chart to find the multiplier of how many reps you did, in this case it is 1.33

Then multiply how many pounds you benched by the multiplier (1.33)

Equals 199.5 pounds. That is an estimated almost 200 pound max one rep

Max One Rep Chart Calculator