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Vitamine D op Breedtegraad (Diepgaand) — Gratis online tool

Breedtegraad × huidtype × seizoen → persoonlijk IE-doel

Persoonlijk vitamine D supplement-advies op basis van breedtegraad, Fitzpatrick-huidtype, seizoen en binnentijd. Geen registratie nodig.

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Meer weten

Vitamin D Dose by Latitude (Personalized)

Personalized vitamin D3 supplement target based on latitude, Fitzpatrick skin type, season, indoor time, body weight. Standard recommendations under-dose for many.

How to use this tool

  1. 1

    Enter latitude

    Where you live (city → lookup if unsure).

  2. 2

    Skin tone + lifestyle

    Fitzpatrick + indoor hours.

  3. 3

    Personalized IU/day

    Often 2-3× standard recs.

Frequently Asked Questions

Why is the standard recommendation often too low?
US RDA = 600-800 IU. Set in 1990s based on bone health. Modern data (Holick 2011 et al.) suggests 2000-4000 IU/day for most adults. Especially: dark skin (5-10× more sun needed), high latitudes (winter UVB inadequate Oct-Apr above 35° lat), indoor lifestyles.
Should I test serum 25-OH-D?
Yes — single most useful biomarker. Target: 40-60 ng/mL (100-150 nmol/L). Kosten: $50-75 in US. Test 1-2× per year, especially end of winter (lowest) and end of summer (highest). Adjust dose based on level, not formula.
D3 vs D2?
D3 (cholecalciferol). Period. D2 (ergocalciferol) raises 25-OH-D less effectively, is less stable, and primarily exists for orthodox-religious / vegan reasons (D3 traditionally from lanolin, but vegan D3 exists from lichen).

Belangrijkste punten

  • Vitamin D by Latitude (Deep) is a free, browser-based calculator tool — lat × skin × season → personalized iu target.
  • Nee signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Vitamin D by Latitude (Deep)

  1. Open the tool: Launch Vitamin D by Latitude (Deep) on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Vitamin D by Latitude (Deep) — Quick Facts

Prijs
Gratis — geen limieten, geen watermerk, geen paywall
Privacy
100% in de browser — geen data verlaat je apparaat
Platform
Elke moderne browser — desktop, tablet of mobiel
Categorie
Rekenmachine Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FunctieDetails
ToolVitamin D by Latitude (Deep)
CategorieRekenmachine
Aanmelden vereistNee
Bestand uploadenGeen — verwerkt in browser
Mobiel ondersteundVolledig responsive
KostenVoor altijd gratis

Why Use Vitamin D by Latitude (Deep)?

You should try Vitamin D by Latitude (Deep) for a quick, private way to lat × skin × season → personalized iu target. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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Daily calorie needs using Mifflin-St Jeor formula

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100% Privacy. Deze tool draait volledig in je browser. Je gegevens worden nooit naar een server geüpload.