Powerful Features for Every Lifter
From beginners to elite athletes, our comprehensive suite of tools helps you train smarter, lift safer, and achieve your strength goals faster.
Scientific Accuracy
Our calculator uses three scientifically validated formulas to provide the most accurate 1RM estimation possible.
- Epley Formula for moderate rep ranges
- Brzycki Formula for low rep ranges
- Lombardi Formula for experienced lifters
- Range calculation showing min/max estimates
Comprehensive Training Tools
Everything you need to plan and execute your strength training program effectively.
- Percentage-based training loads
- Rep max calculations (1-10RM)
- Customizable warm-up protocols
- Competition attempt planning
User-Friendly Interface
Designed for easy use in the gym, with large buttons and clear displays optimized for mobile devices.
- Mobile-first responsive design
- Large touch targets for gym use
- Real-time calculations
- Quick unit conversion (kg/lb)
Plate Loading Calculator
Know exactly which plates to load on each side of the bar for any target weight.
- Automatic plate configuration
- Support for kg and lb plates
- Custom plate availability
- Visual loading guide
Export & Share
Save and share your calculations with training partners or coaches.
- Copy results to clipboard
- Export training tables
- Share via social media
- Print-friendly format
Professional Features
Advanced tools for serious athletes and coaches.
- Multiple lift profiles
- Historical tracking capabilities
- Competition planning tools
- Team management features
How It Works
Get your accurate 1RM calculation in three simple steps
- 1Select Your Lift
- Choose from bench press, squat, deadlift, or other exercises. Each lift type can have different strength curves.
- 2Enter Your Data
- Input the weight you lifted and the number of repetitions completed with good form. Use kg or lb based on your preference.
- 3Get Your Results
- Instantly receive your estimated 1RM, percentage charts, warm-up sets, and personalized training recommendations.
Why Choose 1RM Pro?
See how we compare to other calculators
| Feature | 1RM Pro | Others |
|---|---|---|
| Multiple Formulas | ✓ 3 Formulas | Usually 1 |
| Warm-up Protocol | ✓ | ✗ |
| Meet Attempts | ✓ | ✗ |
| Plate Calculator | ✓ | Rare |
| Mobile Optimized | ✓ | Sometimes |
| Free to Use | ✓ | Varies |
Start Using These Features Today
No signup required. Start calculating your 1RM and optimizing your training immediately.