RBST Gear Co. Fitness Calculators
Train Smarter, Lift Harder
At RBST Gear Co., we believe athletes should have access to tools that actually help them improve — not just gear that looks good. That’s why we launched a full lineup of fitness calculators designed for CrossFit athletes, lifters, competitors, and everyday grinders who want real numbers, real progress, and better performance.
Whether you're trying to hit a new PR, improve your rowing pace, dial in your nutrition, or become more efficient with Olympic lifting percentages, our calculators are built to simplify the process and help you train with purpose.
You can explore the full lineup here:
Why Fitness Calculators Matter
The best athletes in the world don’t train based on guessing. They train based on data.
Knowing your numbers helps you:
- Track progress accurately
- Prevent overtraining
- Program workouts more effectively
- Recover better
- Improve consistency
- Build strength safely
- Understand pacing and performance
Strength coaches and training systems often use percentages, pacing, heart rate zones, calorie targets, and power outputs to help athletes improve performance over time. One-rep max percentages and structured strength programming are widely used throughout powerlifting, Olympic lifting, and CrossFit training.
RBST Gear Co. created these calculators to make advanced fitness data simple and accessible for everyone.
1 Rep Max Lift Calculator
The 1 Rep Max Lift Calculator helps athletes estimate their maximum strength without needing to attempt a dangerous max-out lift.
Simply enter:
- Weight lifted
- Number of reps completed
The calculator estimates your projected 1RM (one-rep max) for exercises like:
- Back squat
- Bench press
- Deadlift
- Shoulder press
- Front squat
- Cleans
- Snatches
One-rep max calculations are commonly used to structure training percentages for strength and hypertrophy programming.
This allows athletes to train smarter by knowing exactly what percentage of their max they should be lifting during workouts.
Benefits
- Safer than max testing
- Better workout programming
- Easier progress tracking
- Ideal for percentage-based lifting
ERG Performance Calculator
The ERG Performance Calculator is built for athletes using:
- Concept2 RowERG
- SkiERG
- BikeERG
- Echo Bike
- Assault Bike
This calculator helps athletes understand pacing, intervals, split times, calories, wattage, and projected performance.
ERG machines produce tons of data, but most athletes don’t fully understand what those numbers mean. Our calculator helps break everything down in a simple and useful way.
Athletes can analyze:
- 500m split pace
- Calories per hour
- Estimated finish time
- Watt output
- RPM consistency
- Interval pacing
This is especially useful for:
- CrossFit training
- HYROX
- Endurance conditioning
- Competition prep
- VO2 max work
- Sprint interval training
Understanding pace consistency and power output is one of the biggest keys to improving conditioning performance.
Macros Calculator
Nutrition matters just as much as training.
The Macros Calculator helps athletes determine:
- Daily calorie intake
- Protein targets
- Carbohydrate intake
- Fat intake
- Meal breakdowns
Whether your goal is:
- Fat loss
- Muscle gain
- Performance
- Maintenance
…the calculator helps simplify nutrition planning.
Athletes can input:
- Age
- Weight
- Height
- Activity level
- Goals
Then receive customized macro recommendations designed to support training and recovery.
Nutrition calculators are commonly based on established metabolic estimation methods and activity multipliers used throughout the fitness industry.
Why Macros Matter
- Protein supports muscle recovery
- Carbs fuel performance
- Fats support hormones and recovery
- Calories determine body composition changes
Without structure, most athletes either under-eat, over-eat, or fail to recover properly.
Olympic Lifting Calculator
The Olympic Lifting Calculator helps athletes build smarter Olympic lifting sessions using percentages and training weights.
Olympic lifting is highly technical and relies heavily on precise percentages for:
- Snatch
- Clean & Jerk
- Power Clean
- Hang Clean
- Power Snatch
- Front Squat
- Push Press
- Pulls
Instead of guessing weights during training, athletes can instantly calculate:
- Percentage-based lifts
- Warm-up progression
- Working sets
- Volume targets
Olympic lifting programs often rely on structured loading percentages to improve technique, speed, and barbell efficiency.
This calculator helps athletes:
- Avoid overloading
- Improve consistency
- Train with intent
- Build confidence under the bar
Built for the CrossFit Community
At RBST Gear Co., we’re more than a gear company.
We’re coaches, athletes, competitors, and members of the CrossFit community who understand how important performance tools are. These calculators were built to help athletes stop guessing and start training with purpose.
Whether you’re chasing your first pull-up, a 500-pound deadlift, a faster 2K row, or better nutrition habits, our calculators are designed to help you improve one step at a time.
No fluff. No gimmicks. Just tools that work.
Frequently Asked Questions (FAQs)
Are the RBST calculators free?
Yes. All RBST Gear Co. fitness calculators are completely free to use.
Are these calculators only for CrossFit athletes?
No. They can be used by anyone interested in strength training, conditioning, Olympic lifting, endurance training, or nutrition.
How accurate is the 1 Rep Max Calculator?
1RM calculators provide an estimate based on established strength formulas commonly used throughout the fitness industry.
Can beginners use these calculators?
Absolutely. They’re designed for both beginners and advanced athletes.
Why should I track my ERG performance?
Tracking pacing, splits, and wattage helps athletes improve efficiency, endurance, and consistency during conditioning workouts.
Do macros really matter?
Yes. Proper nutrition supports recovery, muscle growth, performance, and body composition goals.
Why use percentages in Olympic lifting?
Percentage-based lifting helps athletes manage fatigue, improve technique, and follow structured progression safely.
Will RBST add more calculators in the future?
Yes. We plan to continue expanding our calculator lineup with more tools for CrossFit athletes, strength athletes, and endurance competitors.