What does One-Rep Max do that other Health pages on this site do not?

Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice. Short version: 1RM via Epley or Brzycki; shows formula used.

Does One-Rep Max upload my file or text to Tool-You servers?

No. One-Rep Max runs in this browser tab. Files stay on the device. Limit note: Reps 1–12. Choose Epley or Brzycki. Not medical advice.

Should I use Protein Target instead of One-Rep Max?

Use One-Rep Max when you need 1RM via Epley or Brzycki; shows formula used. Use Protein Target when you need Protein grams and ounces from body weight. They share a category (Health) but not the same job.

What are the limits of One-Rep Max?

Reps 1–12. Choose Epley or Brzycki. Not medical advice. Also: Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.

One-Rep Max

1RM via Epley or Brzycki; shows formula used.

Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.

What One-Rep Max does

Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.

The interactive controls for One-Rep Max load after this article so crawlers still read the instructions. Path /health/one-rep-max is the canonical address. Work happens on this device; Tool-You does not take a copy of the file or pasted text for One-Rep Max.

How to use One-Rep Max

Confirm you need One-Rep Max, not Protein Target (Protein grams and ounces from body weight.). Address: /health/one-rep-max.
Enter the numbers or dates One-Rep Max uses. 1RM via Epley or Brzycki; shows formula used.
Read the result as One-Rep Max defines it — not as Calorie Calculator (BMR, TDEE, and a daily calorie target.). Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.
One-Rep Max is an estimate in the browser, not professional advice. Reps 1–12. Choose Epley or Brzycki. Not medical advice.
Need a different formula? Try Calorie Calculator (BMR, TDEE, and a daily calorie target.) instead of stretching One-Rep Max.

When not to use One-Rep Max

Skip One-Rep Max when a neighbor tool matches better — start with Protein Target or Calorie Calculator — or when the description already warns the job will fail. In the tool’s own words: Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.

Questions about One-Rep Max

What does One-Rep Max do that other Health pages on this site do not?: Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice. Short version: 1RM via Epley or Brzycki; shows formula used.
Does One-Rep Max upload my file or text to Tool-You servers?: No. One-Rep Max runs in this browser tab. Files stay on the device. Limit note: Reps 1–12. Choose Epley or Brzycki. Not medical advice.
Should I use Protein Target instead of One-Rep Max?: Use One-Rep Max when you need 1RM via Epley or Brzycki; shows formula used. Use Protein Target when you need Protein grams and ounces from body weight. They share a category (Health) but not the same job.
What are the limits of One-Rep Max?: Reps 1–12. Choose Epley or Brzycki. Not medical advice. Also: Epley: w×(1+r/30). Brzycki: w×36/(37−r). Reps 1–12. Direct when reps=1. Not energy. Not medical advice.