Multi-Rep Calculator – Calculate Training Weights
Calculate your weights for different repetition ranges.
Gib dein maximales Gewicht für eine Wiederholung ein.
| Wiederholungen | Gewicht | Intensität |
|---|---|---|
| 1 | 100 kg | 100% |
| 3 | 93 kg | 93% |
| 5 | 87 kg | 87% |
| 8 | 80 kg | 80% |
| 10 | 75 kg | 75% |
| 12 | 70 kg | 70% |
| 15 | 65 kg | 65% |
Diese Tabelle hilft dir, die richtigen Gewichte für dein Training zu wählen, basierend auf deinem geschätzten Maximum.
Multi-Rep Calculator: What Weight for What Rep Range?
You know your maximum training weight for an exercise (e.g., 100 kilograms on the bench), but your new training plan suddenly demands sets in the 8 to 12 repetition range today? Guessing every time or warming up with the wrong plates through trial-and-error just leads to frustration. The FitScale Multi-Rep Calculator takes this thinking off your hands.
What are Multi-Reps for?
The Multi-Rep Calculator is the logical extension of our 1RM Calculator (One Rep Max). A clean, structured training program requires changing training stimuli (periodization). Your body will not permanently tolerate pure maximum strength training with constantly 80-100% of your capacity (rep ranges of 1 to 4).
The 3 Magic Zones (Basics)
- 1-5 Reps (Strength): The weight is almost at 85-100% of your maximum. The stimulus is primarily neurological (the Central Nervous System fires stronger) and focuses on strength gains.
- 6-12 Reps (Hypertrophy): Weight at approx. 65-80%. The Time-under-Tension (TuT) is around 40 seconds per set. The perfect range to stimulate thick muscle fibers for growth.
- 15+ Reps (Muscular Endurance): Weight below 60%. The cardiovascular system, lactate (burning sensation), and the fatigue resistance of your muscles are trained. Also ideal for rehab phases.
The Mathematics of Percentages
In sports science, there are clear conversion tables (e.g., from Landon, Epley, or the NSCA) to interpolate any other weight for X repetitions from your One-Rep-Max. The Multi-Rep Calculator is built exactly on these formulas. After entering your weight, the tool lists in a table which plates you need to load for, let's say, 4, 8, or 12 reps.
The RIR / RPE Factor
An important subtlety in hypertrophy training: If the calculator indicates that your "10-Rep" weight is exactly 70kg, this scientifically means that the tenth and last (!) repetition with 70kg brings you to absolute muscle failure. You physically couldn't force an eleventh one.
Pay attention to your training plan here: Most plans require an "RIR 2" (Reps in Reserve). This means you should perform 10 reps, but choose a weight with which you could have managed 12 if necessary. In this case, you would look for the 12-Rep weight in the Multi-Rep Calculator, but end the set after 10 repetitions with said RIR=2.
Sources of Error: Isolation Exercises
Please note: Just like the 1RM Calculator, the Multi-Rep algorithm loses accuracy when you compare completely different biomechanics. The percentage table works best for compound exercises:
- Excellent: Barbell squats, deadlifts, bench press, overhead press.
- Poor: Isolation exercises like bicep curls, lateral raises, or machine leg curls. Fatigue hits completely differently here at high reps. Calculating a 1RM for lateral raises is meaningless!
Summary for Everyday Gym Use
- Use our tool before you start your setup at the bench.
- Determine how much the plan (e.g., the 5x5 Training Plan) requires in this new cycle.
- Put the recommended weight on the bar. If it feels too heavy or too light on the bar, react dynamically. The algorithm calculates math, but your body is subject to daily form, sleep quality, and your calorie balance when counting calories.
Frequently Asked Questions
How do I use the Multi-Rep table?
Choose your target repetition count from the table. The corresponding weight shows you what you should train with to achieve the desired intensity.
What does 'Intensity' mean?
Intensity refers to the percentage of your 1RM. 100% is your maximum, 75% is a classic weight for muscle building (hypertrophy).
Do percentages change by exercise?
Roughly they stay the same, but for lower body exercises (like squats), many athletes can often do more reps at high percentages than for upper body exercises.
Should I always train to failure?
Not necessarily. Usually, stopping 1-2 reps before failure (RPE 8-9) is sufficient to effectively stimulate growth without overloading the nervous system.
Why can I do fewer reps than the table says?
The table is an average. Your individual muscle fiber composition (fast-twitch vs. slow-twitch) can influence how many reps you can do at a certain weight.