Trust Architecture

UV Solar Vitamin D Circumstantial Synthesizer

Calculate estimated daily solar windows to synthesize Vitamin D3 naturally based on latitude and skin melanin levels.

UV Solar Vitamin D Synthesizer

Vitamin D3 acts as a highly potent steroid hormone in your body. While direct blood draws are necessary to establish baselines, your body synthesizes natural D3 via skin UV exposure. This synthesizer calculates recommended daily solar windows based on your latitude, skin type, and solar index, warning when solar angles make D3 synthesis impossible.

Circadian Solar D3 Synthesizer

Select your latitude, Fitzpatrick skin type, and solar time. All calculations run locally in your browser.

Latitude (US Region)

Skin Fitzpatrick Type

Time of Day