Tools
Strength Calculators
Four calculators, each running one slice of the engine Sterka uses to program your training. Every number here is the same math the app runs on your lifts — worked out for a single set, with the arithmetic shown.
- 1RM Calculator Estimate your one-rep max from a set you actually did. Brzycki, honestly capped at ten reps.
- Training Max Calculator Ninety percent of your 1RM, floored to the bar — the anchor a program loads every percentage off.
- Warm-Up Sets Calculator How many warm-up rungs before your work set, scaled to the load you're building to.
- Wave Planner One set becomes a four-week wave — load, reps, and intensity, mapped out in advance.
These calculators show one number at a time. Sterka runs all of it — the loads, the sets, the rest, the progression — for every session.
Join the WaitlistEvery tool here is the engine's math on one set, not a plan built for you. The real one starts with a screening. Consult a clinician before starting a new program.