Health Calculators

Estimates your one-rep maximum from any set using Epley, Brzycki, and more formulas.

Estimates bench press 1RM and training weights with strength standards by bodyweight.

Calculates daily protein, carbs, and fat targets based on TDEE, activity, and goal.

Predicts next 6 periods, ovulation date, and fertile window from your menstrual cycle data.

Calculates keto macros with a 5/25/70 carb/protein/fat split for ketogenic diets.

Estimates calories burned running by weight, distance, pace, incline, and surface.

Converts step count to miles, km, and calories burned — with stride length from height.

Estimates VO2 max from the Cooper 12-min run, Rockport walk, or non-exercise method.

Estimates calories and macros for a custom Chipotle bowl, burrito, or tacos.

Estimates calories, sugar, and caffeine for any custom Starbucks drink and food.

Estimates calories and macros for a custom Subway sandwich or wrap.

Tracks calories and macros for a custom McDonald's meal order.

Tracks calories and macros for any Taco Bell menu item combination.

Estimates calories and macros for a custom Cava Mediterranean grain bowl.

Calculates syringe units and volume for ipamorelin doses in mcg — the most popular GHRP.

Calculates syringe units and volume for CJC-1295 (no DAC) doses — the classic ipamorelin stack partner.

Calculates syringe units and volume for retatrutide weekly doses from vial concentration.

Calculates syringe units and volume for semaglutide weekly doses from vial concentration.

Calculates syringe units and volume for tirzepatide weekly doses from vial concentration.

Estimates eGFR using CKD-EPI 2021 and MDRD equations and CKD stage.

Converts between A1C % and estimated average glucose (eAG) in mg/dL or mmol/L.

Calculates body surface area using DuBois, Mosteller, Haycock, and Gehan-George.

Adjusts total calcium for albumin level and classifies hypo/hypercalcemia.

Calculates absolute neutrophil count from WBC and differential, with neutropenia tier.

Calculates mg/kg doses, liquid volumes, and IV infusion rates for drug administration.

Calculates IV flow rate in mL/hr or gtts/min from volume, time, and drop factor.

Estimates ethyl glucuronide detection window in urine from drinks consumed.

Calculates Army body fat % using the AR 600-9 circumference method with pass/fail.

Scores all 6 Army Combat Fitness Test events and total with pass/fail by age and sex.

Scores USMC Physical Fitness Test events and classifies First/Second/Third Class.

Scores Army Fitness Test events including deadlift, push-ups, and 2-mile run.

Checks weight against Army AR 600-9 screening tables and flags for tape test.