A QUICK FIELD GUIDE

How helsi works

Start with your question

Choose a calculator, enter valid inputs and see results immediately. “Load illustrative example” uses the worked example on that page. Reset clears your inputs and sharing fragment. Examples are fictional and are not recommendations.

Units without drift

Measurements are held in kilograms, centimeters, kilometers and seconds. Switching display units keeps underlying values intact. Displayed input conversions show up to six decimals; editing a converted field deliberately replaces its physical value. Inches are total inches, not feet-and-inches. Protein ratios always use grams per kilogram. A plate inventory preset is separate from display units.

Save only when you choose

Enter a name and select “Save in this browser”. The local library stores the input scenario, units, name and save date. Load, rename or delete it on Saved calculations. No automatic measurement or nutrition storage happens. Up to 100 entries are supported. If storage is blocked or full, an error appears and the current calculation remains available.

Sharing exposes your inputs

“Copy sharing link” creates a version 1 scenario in the URL fragment after #. Anyone with the link can read its values. They can remain in browser history and copied messages. The fragment is not part of the HTTP request, but is not encryption. The destination validates the complete scenario and calculates fresh results. Invalid or unsupported links leave the current inputs unchanged.

Transfer just the useful number

TDEE can explicitly transfer its calorie target to Macros. One-rep max can explicitly transfer a selected percentage load to Plates. Only that number and display units travel in the handoff; age, sex, body measurements and unrelated inputs do not. Fill in the remaining fields.

Clipboard and storage limitations

Copy actions offer selectable text if clipboard permission fails. Saves belong to this origin and browser profile, so they do not move to a newly configured production domain. Where available, browser Web Locks serialize saves across tabs. Without them, avoid editing the library in several tabs at once. Unreadable or unsupported saved data is kept intact instead of overwritten.

Health context

Nutrition calculators are for generally healthy adults, excluding pregnancy, breastfeeding and clinical nutrition needs. Every method has its own applicability and numerical boundaries. A number within a supported range is not proof of suitability for you. helsi does not provide diagnosis, medical treatment, food planning or a guarantee of performance.