Estimates, not achievements.
Calculators do not award ranks, verify lifts or approve standards. Your input is a starting point for planning.
Understand the Strength Index ↗Prepare with purpose.
Start with the numbers.
Useful calculations, clear assumptions and no account required. Choose a tool for your next session—not a shortcut to a rank.
✓ No account✓ Local calculations✓ Clear limitations
01 / STRENGTH
About the Strength Lab ↗Your Strength Lab.
Five working calculators, running right on your device.
AVAILABLE NOW
One-rep max
Turn a recent working set into an estimated maximum.
Open tool ↗AVAILABLE NOW
Training percentages
Translate a tested or estimated 1RM into training loads.
Open tool ↗AVAILABLE NOW
Smart plate loading
Build a balanced bar from the plates you actually have.
Open tool ↗AVAILABLE NOW
Kilograms ↔ pounds
Convert the number without changing your intended load.
Open tool ↗AVAILABLE NOW
Warm-up set planner
Build an adjustable ramp toward your planned working sets.
Open tool ↗02 / EXISTING EDUCATIONAL TOOLS
More tools, already available.
The existing nutrition and body-composition estimates remain available. General adult education—not a personal nutrition plan or medical advice.
AVAILABLE NOW
Protein estimate
Explore a daily protein estimate from bodyweight and an adjustable factor.
Open tool ↗AVAILABLE NOW
Energy needs
Estimate resting energy expenditure and an activity-based daily total.
Open tool ↗AVAILABLE NOW
Macro calculator
See a transparent split of calories into protein, fat and carbohydrates.
Open tool ↗AVAILABLE NOW
Body-fat estimate
A circumference-based approximation—not a clinical measurement.
Open tool ↗PLANNED / NOT FUNCTIONAL
Room to grow. No empty promises.
Further nutrition tools and personalized planning are planned for future releases. These additional features are not available on this website.
The original one-rep max and plate-loading pages are still available at their existing URLs. Original 1RM ↗ · Original plates ↗
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The calculators run locally. Their inputs are not uploaded or saved to a profile. Offline use requires an initial visit and successful cache installation.