1RM-Rechner

Use our free 1RM-Rechner to get an instant, science-backed result in under 30 seconds. All calculations run entirely in your browser — no data leaves your device, no account required.

Units

Exercise Name (optional)

Weight Lifted

Reps Performed

Calculation Formula

Estimated 1 Rep Max (1RM)

— kg

Calculated using the Epley formula

Training Percentages

% of 1RM	Weight	Best For

Action Step To reach your calculated goal easily:

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What Is 1RM-Rechner?

Schätze dein Maximalgewicht für jede Übung.

How to Calculate — The Brzycki Formula — Weight ÷ (1.0278 − 0.0278 × Reps) Formula

What Does Your Result Mean?

Now that you have your 1rm-rechner result, use these tools to build a complete picture of your health metrics.

✓

Evidence-informed calculator · Updated August 2026 This calculator uses the stated published equation (Brzycki Formula — Weight ÷ (1.0278 − 0.0278 × Reps)) and is for educational use. A calculator result is an estimate, not medical advice or an individual clinical assessment.

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1RM-Rechner

Calculator

Training Percentages

Get your personalised plan based on your results

What Is 1RM-Rechner?

How to Calculate — The Brzycki Formula — Weight ÷ (1.0278 − 0.0278 × Reps) Formula

What Does Your Result Mean?

Embed this calculator on your blog or website

Calculator

Training Percentages

Get your personalised plan based on your results

What Is 1RM-Rechner?

How to Calculate — The Brzycki Formula — Weight ÷ (1.0278 − 0.0278 × Reps) Formula

What Does Your Result Mean?

Next Steps

Embed this calculator on your blog or website