Utilize this chart to gauge your theoretical max effort capability based on true
rep max efforts. Chart accuracy degrades when you use high rep maxes (>10
RM) to calcuate your one rep max effort, as non-strength based factors like muscular
endurance, conditioning, and muscular efficiency come into play.
Jump to chart: 100lb
- 295lb | 300lb - 495lb | 500lb
- 695lb | 700lb - 895lb
700lb
- 895lb 1RM
100%
|
95%
|
92.5%
|
90%
|
87.5%
|
85%
|
82.5%
|
80%
|
77.5%
|
75%
|
72.5%
|
70%
|
67.5%
|
65%
|
62.5%
|
60%
|
57.5%
|
55%
|
52.5%
|
50%
|
1RM
|
2RM
|
3RM
|
4RM
|
5RM
|
6RM
|
7RM
|
8RM
|
9RM
|
10RM
|
11RM
|
12RM
|
13RM
|
14RM
|
15RM
|
16RM
|
17RM
|
18RM
|
19RM
|
20RM
|
895
|
850
|
827
|
805
|
783
|
760
|
738
|
716
|
693
|
671
|
648
|
626
|
604
|
581
|
559
|
537
|
514
|
492
|
469
|
447
|
890
|
845
|
823
|
801
|
778
|
756
|
734
|
712
|
689
|
667
|
645
|
623
|
600
|
578
|
556
|
534
|
511
|
489
|
467
|
445
|
885
|
840
|
818
|
796
|
774
|
752
|
730
|
708
|
685
|
663
|
641
|
619
|
597
|
575
|
553
|
531
|
508
|
486
|
464
|
442
|
880
|
836
|
814
|
792
|
770
|
748
|
726
|
704
|
682
|
660
|
638
|
616
|
594
|
572
|
550
|
528
|
506
|
484
|
462
|
440
|
875
|
831
|
809
|
787
|
765
|
743
|
721
|
700
|
678
|
656
|
634
|
612
|
590
|
568
|
546
|
525
|
503
|
481
|
459
|
437
|
870
|
826
|
804
|
783
|
761
|
739
|
717
|
696
|
674
|
652
|
630
|
609
|
587
|
565
|
543
|
522
|
500
|
478
|
456
|
435
|
865
|
821
|
800
|
778
|
756
|
735
|
713
|
692
|
670
|
648
|
627
|
605
|
583
|
562
|
540
|
519
|
497
|
475
|
454
|
432
|
860
|
817
|
795
|
774
|
752
|
731
|
709
|
688
|
666
|
645
|
623
|
602
|
580
|
559
|
537
|
516
|
494
|
473
|
451
|
430
|
855
|
812
|
790
|
769
|
748
|
726
|
705
|
684
|
662
|
641
|
619
|
598
|
577
|
555
|
534
|
513
|
491
|
470
|
448
|
427
|
850
|
807
|
786
|
765
|
743
|
722
|
701
|
680
|
658
|
637
|
616
|
595
|
573
|
552
|
531
|
510
|
488
|
467
|
446
|
425
|
845
|
802
|
781
|
760
|
739
|
718
|
697
|
676
|
654
|
633
|
612
|
591
|
570
|
549
|
528
|
507
|
485
|
464
|
443
|
422
|
840
|
798
|
777
|
756
|
735
|
714
|
693
|
672
|
651
|
630
|
609
|
588
|
567
|
546
|
525
|
504
|
483
|
462
|
441
|
420
|
835
|
793
|
772
|
751
|
730
|
709
|
688
|
668
|
647
|
626
|
605
|
584
|
563
|
542
|
521
|
501
|
480
|
459
|
438
|
417
|
830
|
788
|
767
|
747
|
726
|
705
|
684
|
664
|
643
|
622
|
601
|
581
|
560
|
539
|
518
|
498
|
477
|
456
|
435
|
415
|
825
|
783
|
763
|
742
|
721
|
701
|
680
|
660
|
639
|
618
|
598
|
577
|
556
|
536
|
515
|
495
|
474
|
453
|
433
|
412
|
820
|
779
|
758
|
738
|
717
|
697
|
676
|
656
|
635
|
615
|
594
|
574
|
553
|
533
|
512
|
492
|
471
|
451
|
430
|
410
|
815
|
774
|
753
|
733
|
713
|
692
|
672
|
652
|
631
|
611
|
590
|
570
|
550
|
529
|
509
|
489
|
468
|
448
|
427
|
407
|
810
|
769
|
749
|
729
|
708
|
688
|
668
|
648
|
627
|
607
|
587
|
567
|
546
|
526
|
506
|
486
|
465
|
445
|
425
|
405
|
805
|
764
|
744
|
724
|
704
|
684
|
664
|
644
|
623
|
603
|
583
|
563
|
543
|
523
|
503
|
483
|
462
|
442
|
422
|
402
|
800
|
760
|
740
|
720
|
700
|
680
|
660
|
640
|
620
|
600
|
580
|
560
|
540
|
520
|
500
|
480
|
460
|
440
|
420
|
400
|
795
|
| 
