Health & Wellness
Science-backed health calculators developed in consultation with medical professionals. Our wellness tools provide evidence-based insights for fitness tracking, nutrition planning, and health monitoring. Always consult healthcare providers for medical decisions.
Health & Wellness
ASCVD Risk Calculator: PREVENT and Pooled Cohort
Estimate 10-year and 30-year heart risk with the AHA PREVENT equations, or 10-year ASCVD risk with the 2013 Pooled Cohort Equations.
Baby Growth Tracker Calculator - WHO Percentiles
Calculate a baby's weight and height percentiles from birth to 36 months using WHO growth standards. Free tool with growth status and developmental milestones.
Baby Height Percentile Calculator (WHO Growth Chart)
Calculates a baby's height percentile from WHO growth standards. Enter height, age in months or weeks, and sex to see the percentile and a growth chart.
Baby Nap Calculator | Wake Windows by Age (0-60 Months)
A baby nap calculator that estimates a baby's next nap time from their age and last wake time, using standard wake-window ranges for ages 0 to 60 months.
Baby Sleep Cycle Calculator by Age | Free Sleep Tool
Free baby sleep cycle calculator by age (0-36 months). Get personalized nap schedules, wake windows & night sleep recommendations based on your child's age.
Baby Weight Percentile Calculator | WHO Growth Standards
Calculates a baby's weight percentile for ages 0 to 24 months using WHO growth standards. Enter weight, age, and sex to see the percentile and a growth chart.
Barbell Plate Weight Calculator
Calculate the total weight of a loaded barbell by adding the bar weight and the plates on both sides, shown in pounds or kilograms, with formula and example.
Bird Age Calculator: Estimate Your Pet Bird's Age
Calculate your bird's age based on species and physical characteristics. Get estimates for parrots, canaries, budgerigars, finches, and cockatiels with our simple tool.
BMI Calculator — Body Mass Index (Metric & Imperial)
A body mass index (BMI) calculator that turns height and weight, in metric or imperial units, into a BMI score, WHO weight category, and healthy weight range.
BMR Calculator: Basal Metabolic Rate (Mifflin-St Jeor)
Estimate basal metabolic rate from sex, age, height and weight using the Mifflin-St Jeor equation. Metric or imperial input, result in kcal and kJ.
Calorie Calculator: Daily Calorie Target from TDEE
Works out a daily calorie target from height, weight, age, sex and a chosen weekly weight-change rate, using the Mifflin-St Jeor BMR and a TDEE multiplier.
Cat Benadryl Dosage Calculator - Safe Dosing Guide
Calculate safe Benadryl dosage for cats based on weight. Free calculator using veterinary standard of 1mg/lb. Accurate diphenhydramine dosing for felines.
Cat Calorie Calculator - Daily Feeding Guide
Calculate a cat's daily calorie needs from body weight, activity level, and health status, using the veterinary resting energy requirement (RER) formula.
Cat Fish Oil Dosage Calculator | Free Omega-3 Tool
Work out a cat's daily EPA+DHA dose from its weight, age, and health status using published feline fish oil ranges, and see how much fish oil to measure.
Cat Growth Predictor: Kitten Adult Size Calculator
Estimates a kitten's adult weight from its breed, age, current weight, and sex, using breed growth data. Shows a chart of expected weight gain over time.
Cat Health Tracker: Monitor Your Cat's Wellbeing Score
Free cat health tracker to monitor your feline's wellbeing. Track activity, appetite, sleep & behavior to calculate a health score and detect issues early.
Cat Metacam Dosage Calculator | Meloxicam Dosing Tool
Calculate the correct Metacam (meloxicam) dosage for a cat by weight. Get the dose in mg and the volume in ml for the 0.5 mg/ml feline oral suspension.
Cat Pregnancy Calculator: Due Date From Mating Date
This cat pregnancy calculator estimates a due date from the mating date, using the typical 63 to 65 day feline gestation period, with a stage-by-stage timeline.
cat-cephalexin-dosage-calculator
Calculate cephalexin dosage for cats from body weight in pounds or kilograms, using the standard veterinary rate of 10 mg per pound given twice daily.
Cow Pregnancy Calculator - Calving Due Date
Estimate a cow's calving date from her breeding date using the standard 283-day bovine gestation period, with trimester milestones and calving prep reminders.
Dog Benadryl Dosage Calculator by Weight
Calculate a dog's Benadryl dose from its weight using the 1 mg per pound veterinary standard. Results appear instantly in milligrams, tablets, and liquid.
Dog BMI Calculator & Body Condition Score Tool
Calculate a dog's BMI from its weight and height, then use the WSAVA body condition score to check if the dog is underweight, healthy, overweight, or obese.
Dog Breed Lifespan Calculator - Estimate Life Expectancy
Estimates a dog's lifespan from its breed, size category, and health status using base breed data plus size and health adjustments, covering 20 dog breeds.
Dog Cephalexin Dosage Calculator (15-30 mg/kg)
Calculate a dog's cephalexin dose by weight, using the 15-30 mg/kg per-dose veterinary range and the FDA-approved 22 mg/kg label dose, given twice daily.
Dog Food Portion Calculator - Personalized Feeding Guide
Calculate a dog's daily food portion in cups and grams from its weight, age, activity level, and body condition, using a standard veterinary energy formula.
Dog Harness Size Calculator: XS to XXL by Chest Girth
Find the right dog harness size, from XS to XXL, by entering chest girth, neck circumference, and weight. Includes a size chart in inches and centimeters.
Dog Heat Cycle Tracker: Predict & Track Canine Estrus
Free calculator that predicts a female dog's next heat cycle from past cycle dates. It finds the average interval and estimates the next three estrus dates.
Dog Metacam Dosage Calculator | Meloxicam for Dogs
Calculate the Metacam (meloxicam) dose in ml for a dog by weight, in pounds or kilograms: the 0.2 mg/kg Day 1 loading dose and the 0.1 mg/kg daily dose.
Dog Nutrition Calculator - Daily Food & Calorie Needs
Calculates a dog's daily calorie and macronutrient needs from weight, age, activity level, health status, and breed size, using published veterinary formulas.
Dog Omega-3 Dosage Calculator | EPA & DHA Guide
Find the recommended daily omega-3 (EPA+DHA) dose for a dog based on its weight, using the metabolic body weight formula vets use for joint and skin health.
Dog Onion Toxicity Calculator - Check If Onions Are Toxic
Free dog onion toxicity calculator estimates risk level based on weight and amount consumed. Determine if your dog needs veterinary care after eating onions.
Dog Pregnancy Calculator | Due Date & Timeline
A dog pregnancy due date calculator. Enter the mating date to estimate the whelping date from the average 63-day canine gestation period and view a timeline.
Dog Raisin Toxicity Calculator - Free Risk Assessment
Estimate a dog's raisin poisoning risk from its weight and the amount eaten. Free calculator shows the risk level and when to seek emergency veterinary care.
Dog Raw Food Calculator | Raw Diet Portion Planner
A dog raw food calculator works out how much raw food to feed a dog each day, in grams and ounces, based on its weight, age, activity level, and body condition.
Dog Water Intake Calculator - Daily Hydration Needs
Calculate your dog's daily water needs by weight, age, activity, and weather. Free personalized hydration calculator for puppies, adult, and senior dogs.
Dog Wellbeing Score Calculator - Free Health Assessment
This free calculator scores a dog's wellbeing from 0 to 10 using diet, exercise, behavior, and health inputs, then gives a category and care recommendations.
eGFR & Creatinine Clearance Calculator (CKD-EPI 2021)
Estimate eGFR with the race-free CKD-EPI 2021 equation and creatinine clearance with Cockcroft-Gault, from creatinine in mg/dL or umol/L.
Free PSA Percentage Calculator - Free-to-Total PSA Ratio
A PSA percentage calculator that divides free PSA by total PSA to help assess prostate cancer risk, most useful when total PSA falls between 4 and 10 ng/mL.
Goat Gestation Calculator: Kidding Due Date (150 Days)
Free goat gestation calculator. Enter the breeding date to get the expected kidding due date, based on the standard 150-day gestation period for goats.
Guinea Pig Gestation Calculator | Due Date Tracker
This guinea pig gestation calculator estimates the birth date from the mating date. Guinea pig pregnancy lasts 59 to 72 days, with an average of 68 days.
Gym Weight Tracker: Calculate Total Weight Lifted
A free gym weight tracker that calculates total weight lifted per exercise and workout using sets times reps times weight, with a chart and shareable summary.
Horse Pregnancy Calculator - Track Your Mare's Foaling Date
Enter a mare's breeding date to estimate her foaling date, current trimester, and days remaining, based on the average 340-day equine gestation period.
Horse Weight Calculator - Accurate Equine Weight Estimator
Calculate your horse's weight using heart girth and body length. Free tool for medication dosing, feed management, and health monitoring. Results in lbs & kg.
Mean Arterial Pressure (MAP) Calculator
Estimate mean arterial pressure from a systolic and diastolic reading with MAP = DBP + (SBP - DBP) / 3, and see the pulse pressure with it.
Newborn Diaper Tracker: Wet & Dirty Diaper Counts by Age
Find the expected number of wet and soiled diapers for a baby by age, based on pediatric guidelines, plus a diaper appearance guide and signs of dehydration.
Newborn Feeding Calculator - Baby Feeding Amounts by Age
Estimate how much a baby should eat by age, in ounces and milliliters. Feeding amounts, intervals, and daily feeds follow AAP and CDC pediatric guidelines.
SCORE2 Calculator: 10-Year Cardiovascular Risk in Europe
Estimate 10-year cardiovascular risk with the ESC SCORE2 and SCORE2-OP models. Ages 40 to 89, four European risk regions, mmol/L or mg/dL.
Sun Exposure Calculator: Safe Time by Skin Type & UV
Estimate safe sun exposure time from your skin type, UV index, and sunscreen SPF. Free calculator with the formula, a worked example, and safety tips.
Swine Gestation Calculator - Calculate Pig Farrowing Dates
Free swine gestation calculator for pig farmers. Enter breeding date to calculate accurate farrowing dates using the 114-day gestation period. Instant results.
TDEE Calculator: Total Daily Energy Expenditure
Estimate total daily energy expenditure as BMR times an activity multiplier, using the Mifflin-St Jeor equation. Shows TDEE at all five activity levels.
Weight Tracker: Free Weight Logging Calculator
Log daily weight, view a trend graph, and see average, minimum, maximum, and change over any date range. Data stays private in the browser; no account needed.