Health & Pets calculators
Free health, fitness and pet calculators: military PT scores, calorie needs, A1C, clinical lab formulas, dog Benadryl, dog and livestock due dates, and DOTS.
Benadryl for Dogs Dosage Calculator
How much Benadryl can you give a dog? Enter your dog's weight to get the diphenhydramine dose in mg, tablets and children's liquid (mL).
DOTS Score Calculator (Powerlifting)
Calculate your powerlifting DOTS score from bodyweight and total. Compare lifters of different weights fairly, for men and women, in kg or lb.
Body Recomposition Calculator
Lose fat and build muscle at the same time: get your calorie, protein, carb and fat targets for training and rest days from your stats and body fat.
EER Calculator (Estimated Energy Requirement)
Calculate your Estimated Energy Requirement with the NASEM 2023 equations for adults, children, pregnancy and breastfeeding, at every activity level.
A1C Calculator: A1C to Average Glucose (eAG)
Convert A1C to estimated average glucose in mg/dL and mmol/L, or average glucose to A1C, with the ADA's ADAG formula, ADA ranges, IFCC units and charts.
Weight Loss by Date Calculator
How many calories to lose 10 lb (or any goal) by a set date — using the NIH-researched Hall energy-balance model, not the 3,500 calorie rule.
Winter's Formula Calculator (Expected PaCO₂)
Calculate expected PaCO₂ in metabolic acidosis with Winter's formula (1.5 × HCO₃ + 8 ± 2) and check for a mixed respiratory disorder.
Corrected Sodium Calculator (Hyperglycemia)
Correct serum sodium for high glucose with the Katz (1.6) and Hillier (2.4) factors. Enter glucose in mg/dL or mmol/L. For clinicians and students.
Anion Gap Calculator (Albumin-Corrected)
Calculate the serum anion gap with optional potassium and albumin correction, plus the delta ratio for mixed acid-base disorders. StatPearls formulas.
Army Fitness Test (AFT) Calculator
Score the Army Fitness Test: deadlift, push-ups, sprint-drag-carry, plank and 2-mile run points from the official June 2025 tables, general or combat standard.
USMC PFT & CFT Calculator
Calculate your Marine Corps PFT or CFT score and class from pull-ups or push-ups, plank, run or row, using MCO 6100.13A tables and the 2026 combat-arms rule.
Air Force PT Calculator (2026 PFRA)
Score the 2026 Air Force fitness test: 2-mile run or HAMR, push-ups, sit-ups or plank and waist-to-height ratio, from the official AFPC charts.
Navy PRT Calculator (2026 Standards)
Calculate your Navy PRT score and category from push-ups, forearm plank and run, row or swim, using the December 2025 Guide-5A tables in effect for 2026.
Dog Due Date & Animal Gestation Calculator
Find the due date for a pregnant dog, cat, sheep, goat, pig, cow or horse from the breeding date, with the normal gestation range for each.