Interactive surface
2 local calculators
Each tool runs in the browser without an account or a personal exercise record.
Tools & Calculators
Free, no-sign-up tools that let you work directly with plainexercise's data.
According to this portal's Publishing Organization, this page was last reviewed in August 2026 against our methodology. Figures and extracts on this site — including tables above 1,000 rows when the corpus is that large — are the publisher's responsibility.
Open data: exercise-catalog-statistics.csv (Free Exercise DB extract · CC BY 4.0).
Shoulders ≠ Quadriceps
According to the Free Exercise DB corpus on PlainExercise, Shoulders is #1 of 18 by tagged inventory (335 records) at primary-count #2 (127) ≠ Quadriceps #1 primary (148 records, tagged #4 at 227).
- Shoulders is #1 of 18 by tagged inventory (335 records) at primary-count #2 (127) ≠ Quadriceps #1 primary (148 records, tagged #4 at 227).
- Live tools: Calories Burned and One Rep Max
- Runs in-browser - no account required
Catalog lens
Tools are bounded estimates, not a coaching layer
These browser tools calculate a stated formula locally. They sit beside the public catalog but do not rank a person, prescribe a workout, or replace the catalog's source labels.
Catalog context
873 source records
The tools and the registry are intentionally separate: a formula output is not a ranking of catalogued exercises.
What the lookup returns
Every exercise has a base registry record. Deeper fields thin from there.
All 873 exercises in the Free Exercise DB catalog carry a name, an equipment tag, a primary muscle, and step-by-step instructions with a photo. Coverage narrows from there: not every exercise has a force classification, a mechanic classification, or tagged secondary muscles for the tools above to surface.
- Base registry record 100% 873
Every exercise has a name, an equipment tag, a primary muscle, and step-by-step instructions with a photo the moment it enters the catalog.
- Force classification 96.7% 844
Most exercises are tagged push, pull, or static - the mechanical direction of effort.
- Mechanic classification 90% 786
Compound vs. isolation is tagged for most, but not every, catalogued exercise.
- Secondary muscles tagged 68.8% 601
Only exercises that genuinely recruit a second muscle group carry this field - a real minority of the catalog.
Share of the 873-exercise Free Exercise DB catalog carrying each field. Source: Free Exercise DB (CC0).
Every figure on PlainExercise is compiled from public exercise-science and biomechanics references, no number is typed in by an editor. This page draws directly on the Free Exercise DB, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology & changelog, or report a data error.