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Blood sugar

A single drop of blood on a fingertipBlood sugar · CalculatorA1C calculatorAverage glucose to A1C, and back.A glucose sensor on the back of an armBlood sugar · CalculatorGMI calculatorYour sensor's mean glucose, as a GMI.A clean fork and an empty plate, composed like jewelleryBlood sugar · CalculatorHOMA-IR calculatorInsulin resistance from fasting glucose and insulin.

Heart

Two fingertips resting on the pulse at the neckHeart · CalculatorLDL calculatorLDL from your lipid panel, with the newer equation.A slim glass tube of blood in two clean layersHeart · CalculatorCholesterol ratio calculatorTG to HDL, total to HDL, and non-HDL.Two fingertips on the pulse at a wristHeart · CalculatorHeart rate zones calculatorYour five zones, Zone 2 included.

Hormones

Raised veins over a strong forearmHormones · CalculatorFree testosterone calculatorFree and bioavailable, from total and SHBG.

Kidneys and electrolytes

Water falling through fine glassKidneys and electrolytes · CalculatoreGFR calculatorKidney filtration from creatinine, age and sex.A translucent X-ray film of bone held to the lightKidneys and electrolytes · CalculatorCorrected calcium calculatorCalcium adjusted for your albumin.One clear drop falling from a glass pipetteKidneys and electrolytes · CalculatorBUN to creatinine ratio calculatorThe ratio, in US or SI units.A clear glass vial held between fingertipsKidneys and electrolytes · CalculatorAnion gap calculatorWith the albumin correction most tools skip.

Blood count

A translucent film held up to soft lightBlood count · CalculatorAbsolute neutrophil count calculatorANC from your white count and percentages.

Body and fitness

A taut Achilles tendon pushing off the groundBody and fitness · CalculatorVO2 max calculatorFrom your heart rates, or a 12-minute run.A black leather belt on a new, tighter notchBody and fitness · CalculatorTDEE calculatorThe calories that hold your weight.A clear glass of water held in a handBody and fitness · CalculatorWater intake calculatorHow much to drink, for your day and your heat.The muscle of a strong shoulderBody and fitness · CalculatorLean body mass calculatorEverything that isn't fat, three ways.An egg resting in its broken shellBody and fitness · CalculatorProtein calculatorYour daily grams, and how to split them.

Sleep, cycle and pregnancy

A sleeping eye resting against crisp white linenSleep, cycle and pregnancy · CalculatorSleep calculatorWhen to go to bed, or when to wake.A pearl held between two fingertipsSleep, cycle and pregnancy · CalculatorOvulation calculatorA calendar estimate of your fertile window.A woman's hand with a fine ring, resting on her pregnant stomachSleep, cycle and pregnancy · CalculatorDue date calculatorFrom your last period, conception or IVF.

Unit converters

A gloved hand holding a glucose sensorUnit converters · CalculatorGlucose convertermg/dL to mmol/L, and back.Two test tubes, one dark and one clearUnit converters · CalculatorCholesterol converterCholesterol and triglycerides, mg/dL to mmol/L.A translucent X-ray film of bone held to the lightUnit converters · CalculatorVitamin D converterng/mL to nmol/L, and back.A man's forearm and hand at restUnit converters · CalculatorTestosterone converterng/dL to nmol/L, and back.