Health & Fitness

Plan race fluids with the Marathon Hydration Calculator: sweat rate, during-race drinking, sodium, and post-race replacement targets.

Work out weight-based doses with the Mg Per Kg Calculator: single dose, daily total, dose caps, and liquid volume from any mg/kg rate.

Check the timing window with this Plan B Calculator: see how the hours since unprotected sex change the estimated effectiveness of the pill.

Average Blood Pressure Calculator: average up to five readings and see pulse pressure, mean arterial pressure, and your AHA category today.

Use the Thyroid Calculator to interpret TSH, Free T4 and Free T3 against standard ranges, with a ratio check and pattern summary included.

Use the Tirads Calculator to score a thyroid nodule with ACR TI-RADS points and see the category and biopsy size threshold in seconds today.

Estimate your visceral fat with the Visceral Fat Calculator. Enter waist, BMI, triglycerides and HDL to get your VAI score and guide band.

Use this free Acs Risk Calculator to estimate a GRACE score and in-hospital mortality risk band from vital signs and lab values.

Use the Rma Due Date Calculator to estimate an IVF due date from egg retrieval, embryo transfer, LMP or conception date quickly.

Use the Genetic Potential Calculator to estimate adult height from parents’ heights, with a target range for boys and girls today.