The 5×5 protocol is one of the most proven methods for building bench press strength. But picking the right weight is critical — too heavy and you fail on set 3, too light and you leave gains on the table. The bench press 5×5 calculator solves this by finding your sweet spot.
5×5 TRAINING TOOL
Bench Press 5×5 Calculator
This bench press 5×5 calculator finds the ideal weight for your 5 sets of 5 reps. Enter your best set and get a sustainable 5×5 working weight instantly.
Enter your weight and reps to see your estimated 1RM
Training Percentages
Use your estimated 1RM to determine training loads for different goals
Calculate your 1RM first to see your training percentages
Where Do You Stand?
See how your bench press compares to strength standards for your bodyweight class
Why Use a Bench Press 5×5 Calculator?
Perfect Weight Selection
Get a weight you can actually complete for 5 sets of 5 reps — challenging enough to grow, manageable enough to finish.
Built for Progression
Start at the right weight and add 2.5–5 lbs per session. The 5×5 calculator gives you the correct starting point.
Works for All Levels
Whether you bench 95 lbs or 405 lbs, 5×5 works. The calculator scales to your strength level automatically.
How the Bench Press 5×5 Works Calculator
Finding your 5×5 working weight is simple:
- Enter a recent set to failure — any rep range works.
- The calculator estimates your 1RM using proven formulas.
- Your 5×5 working weight is calculated at approximately 80–85% of your 1RM.
- Start your 5×5 program at this weight and add 5 lbs every session you complete all 25 reps.
Tip: If you are new to 5×5, start at 80% of your 1RM. If you are experienced and can handle higher intensity with good recovery, start at 85%. The last rep of the last set should be hard but doable.
Calculator Formulas
The bench press 5×5 calculator estimates your 1RM first, then takes 80–85% to find a weight you can sustain for 5 sets of 5 reps across your workout:
1RM = w × (1 + r / 30)
Epley Formula
1RM = w × (1 + r / 30)
The most widely used formula in strength training, developed by Boyd Epley. Simple, effective, and accurate for most rep ranges.
Brzycki Formula
1RM = w × (36 / (37 - r))
Created by Matt Brzycki. Particularly accurate for rep ranges of 1 to 10 and commonly used in academic strength research.
Lander Formula
1RM = (100 × w) / (101.3 - 2.67123 × r)
Derived from regression analysis of actual 1RM tests. Good balance of accuracy across different rep ranges.
Lombardi Formula
1RM = w × r0.10
Uses an exponential approach. Gives slightly different results at higher rep ranges, useful for cross-referencing your estimate.
O'Conner Formula
1RM = w × (1 + 0.025 × r)
A straightforward linear model. Quick to compute and provides reasonable estimates across most common rep ranges.
Training Chart
The chart below shows training weights at various percentages of your 1RM. For 5×5 training, focus on the 80–85% range. As you get stronger, your 1RM climbs and your 5×5 weight follows.
lbs
Strength
95%--1-2 reps
90%--2-3 reps
85%--3-5 reps
Hypertrophy
80%--4-6 reps
75%--6-8 reps
70%--8-10 reps
Endurance
65%--10-12 reps
60%--12-15 reps
50%--15-20 reps
Frequently Asked Questions
Common questions about bench press 5×5 calculator
Use approximately 80–85% of your one rep max. The bench press 5×5 calculator estimates this for you based on any set you enter. This weight should be challenging on sets 4 and 5 but still completable with proper form.
Add 2.5–5 lbs each session where you successfully complete all 5 sets of 5 reps. If you fail to complete all 25 reps, keep the same weight next session until you can. After 3 consecutive failures, deload by 10%.
Yes. 5×5 is one of the most effective protocols for building bench press strength, especially for beginners and intermediates. The combination of moderate intensity (80–85% 1RM) and volume (25 total reps) provides an excellent strength stimulus.
Rest 3–5 minutes between sets. This allows full phosphocreatine recovery, ensuring you can maintain strength output across all 5 sets. Shorter rest periods will cause premature fatigue and missed reps.
Beginners can bench 5×5 three times per week (e.g., StrongLifts 5×5). Intermediates typically do better with twice per week. Advanced lifters may only 5×5 bench once per week due to higher recovery demands.
5×5 provides more total volume (25 reps) which is better for muscle growth. 3×5 has less volume (15 reps) but allows heavier weights and is better for pure strength peaking. Start with 5×5 and switch to 3×5 when progress stalls.
Absolutely. Do 2–3 warm-up sets: an empty bar for 10 reps, 50% of working weight for 5 reps, and 75% for 3 reps. This prepares your joints, muscles, and nervous system for the heavy 5×5 work.