One Rep Max Prediction

I found a cool site that can help you predict your one rep max based on your performance on multiple rep workouts.

Here's the link: One Rep Max Calculator.

My previous best in deadlift was 4x305 which was a predicted 333 one rep max. On Friday, after a considerable amount of time off, I did 10x275 ... which would equate to a 367 one rep max. I am very happy with progression ... that's approximately a 10% increase in strength in a little less then 6 weeks. The thing is I haven't done any real deadlift work since then other then working on a snatch gripped deadlift for a bit.