Health & Fitness Tools — Online Tool Store

Altitude Sickness Risk Estimator

Quick, free Altitude Sickness Risk Estimator in your browser

Basketball Shot Chart Tracker

Quick, free Basketball Shot Chart Tracker in your browser

Cool Down Routine Builder

Quick, free Cool Down Routine Builder in your browser

Deep Fry Temperature Guide

Quick, free Deep Fry Temperature Guide in your browser

Desk Ergonomics Checker

Quick, free Desk Ergonomics Checker in your browser

Filament Length to Weight Converter

Quick, free Filament Length to Weight Converter in your

Flood Risk Self-Assessment

Quick, free Flood Risk Self-Assessment in your browser

Grip Endurance Test Timer

Quick, free Grip Endurance Test Timer in your browser

Injury Return-to-Play Timeline

Quick, free Injury Return-to-Play Timeline in your browser

Jet Lag Adjustment Planner

Quick, free Jet Lag Adjustment Planner in your browser

Kombucha Brewing Timer

Quick, free Kombucha Brewing Timer in your browser

Rate Card Builder

Quick, free Rate Card Builder in your browser

Paper Weight (GSM) Converter

Quick, free Paper Weight (GSM) Converter in your browser

Elevator Pitch Timer

Quick, free Elevator Pitch Timer in your browser

Postpartum Recovery Timeline

Quick, free Postpartum Recovery Timeline in your browser

Stretch Routine Timer

Quick, free Stretch Routine Timer in your browser

Swim Split Time Predictor

Quick, free Swim Split Time Predictor in your browser

Packing Weight Tracker

Quick, free Packing Weight Tracker in your browser

VOR Radial Plotter

Quick, free VOR Radial Plotter in your browser

Ammunition Weight Converter

Quick, free Ammunition Weight Converter in your browser

Shoe Lace Length Calculator

Quick, free Shoe Lace Length Calculator in your browser

Ideal Weight Calculator

Healthy weight ranges by several formulas

Fasting Window Tracker

16:8 and custom fasting countdowns

GFR Reference Calculator

Kidney function estimate, educational

Target Weight Date Calculator

When you'll reach a goal at current pace

Posture Reminder Timer

Posture reminder timer: gentle break & stretch alerts

Blood Pressure Category Checker

Classify a blood pressure reading

Caffeine Half-Life Calculator

Estimate caffeine remaining after a drink

Max Heart Rate Calculator

Estimate your maximum heart rate

Body Fat Percentage Calculator

Estimate body fat from measurements

Pregnancy Due Date Calculator

Estimate a pregnancy due date

Ovulation Calculator

Fertile window from cycle length

Meditation Timer

Time a calm meditation session

BMI Calculator

BMI calculator with WHO weight categories

Calorie Deficit Calculator

Find your daily calories for steady weight loss

BMR Calculator

Basal metabolic rate by three common formulas

TDEE Calculator

Find your daily calorie burn from activity level

Protein Intake Calculator

Daily protein needs by weight and activity

Macro Calculator

Protein, carb and fat targets by goal

Pace Calculator

Running pace, time and distance solver

One Rep Max Calculator

Max lift estimates from rep performance

Weight Plate Calculator

Choose barbell plates per side for a target weight

Waist to Hip Ratio Calculator

WHO-standard body fat distribution risk screening

Body Surface Area Calculator

BSA from height and weight, three clinical formulas

Lean Body Mass Calculator

Estimate fat-free mass with clear comparisons

Running Calorie Calculator

Calories burned by distance and weight

Steps to Miles Converter

Steps to miles and kilometers using your height

Smoking Cost Calculator

Money saved by quitting over time

Breathing Exercise Timer

Box and 4-7-8 guided breathing animations

Pet Real Age Calculator

See your pet's human-equivalent age

Pregnancy Week Calculator

Current week and trimester tracker

Eye Test Chart

Calibrated Snellen eye test chart online

Water Intake Calculator

Hydration targets by weight and climate

Child Height Predictor

Estimate adult height from both parents’ heights

Baby Growth Percentile Lookup

Estimate weight percentile by age

Cholesterol Ratio Calculator

Calculate your total:HDL cholesterol ratio

Calories in Recipe Calculator

Estimate total and per-serving calories

A1C to Average Glucose Converter

Convert A1C percentage to estimated average glucose

Blood Alcohol Estimator

Widmark formula BAC estimate — education only

Dosage by Weight Calculator

Convert a reference dose from mg/kg to a total amount

Heart Rate Zone Calculator

Training zones from age and resting HR

Blood Sugar Unit Converter

Convert glucose readings between units

VO2 Max Estimator

Unit Insulin Context Guide

HIIT Interval Timer

Weight Loss Percentage Calculator

Track weight lost, goal progress, and key milestones

Marathon Time Predictor

Race predictions from recent results

Sleep Cycle Calculator

Best bedtimes from 90-minute cycles

Period Cycle Tracker

Predict next cycles from history, stored locally

Steps to Calories Converter

Estimate burn from daily step counts

IV Drip Rate Calculator

Nursing drip rates from volume and time

Workout Rest Timer

Between-set countdown with audio cues

Contraction Timer

Contraction timer with 5-1-1 pattern alerts

Creatinine Clearance Calculator

Estimate creatinine clearance from serum values

Diabetes Risk Score

Estimate type 2 diabetes risk factors

Sleep Apnea Risk Check

Check common obstructive sleep apnoea risk factors

Health Record Timeline

Lay out medical events on one timeline

Tinnitus Frequency Matcher

Find the pitch that matches your tinnitus

HRV Log

Track heart rate variability over time

Vertical Jump Power Calculator

Estimate peak power from a vertical jump

Triathlon Transition Planner

Plan T1 and T2 layout and sequence

Hiking Time Calculator

Estimate walking time using Naismith's rule

Developmental Milestone Tracker

Track milestones against typical age ranges

Glasgow Coma Scale Calculator

Score eye, verbal, and motor response

Blood Pressure Log

Record blood pressure readings over time

Allergy Card Generator

Make an allergy card for travel and dining

Pupillary Distance Measurer

Estimate pupillary distance with a reference object

Grade Adjusted Pace Calculator

Compare hilly and flat running efforts

Training Volume Calculator

Track weekly load and week-to-week increases

Bike Frame Size Calculator

Find a frame size from your body measurements

Pet Vaccination Schedule

Track pet vaccinations and boosters due

Dog Walk Tracker

Log walks and see weekly exercise totals

Heat Index & Wind Chill Calculator

Calculate perceived temperature from heat or wind

Puppy Weight Predictor

Estimate a puppy's adult weight

Oxygen Cylinder Duration Calculator

Estimate remaining oxygen cylinder duration

Body Frame Size Calculator

Estimate body frame size from wrist and height

Pill Dose Splitter

Calculate a tablet dose fraction with unit conversion

Contrast Sensitivity Test

A quick low-contrast pattern screening aid

Treadmill Pace Converter

Convert treadmill speed to running pace

RPE to Percentage Converter

Convert RPE to percentage of your 1RM

Bike Gear Inches Calculator

Calculate gear inches from chainring and cog

Golf Handicap Calculator

Calculate a round's handicap differential

Pregnancy Weight Gain Tracker

Track gain against a recommended range

Apgar Score Calculator

Score newborn wellbeing rapidly

Peak Flow Tracker

Monitor lung function quickly

Emergency Medical ID Maker

Create a concise medical card

Glasses Prescription Explainer

Translate prescription values clearly

Altitude Performance Adjuster

Estimate how altitude changes output

Deload Week Planner

Build a lower-stress training week

Shoe Mileage Tracker

Track wear before it becomes a problem

Cattle Weight Estimator

Estimate live weight from body measurements

Pet Weight Tracker

Track weight changes over time

Hair Developer Calculator

Mix developer and color at the right ratio

Soap Lye Calculator

Balance oil and lye for soap recipes

Cardiovascular Risk Estimator

Estimate 10-year cardiovascular risk from key factors

Asthma Control Check

Score how well-controlled your asthma symptoms are

Doctor Visit Question Builder

Build a printable list of questions before a doctor visit

Audiogram Plotter

Audiogram plotter: air and bone conduction hearing chart

Training Pace Calculator

Calculate training paces from a recent race time

Warm-Up Set Calculator

Generate warm-up set weights leading to your work set

Swim Set Builder

Build a structured swim workout from your goals

Pet Medication Dose Helper

Calculate a medication dose from your pet's weight

Skincare Routine Builder

Build a morning and evening skincare routine order

Nutrition Label Reader

Summarize nutrition facts quickly

Calorie Balance Estimator

Estimate intake versus burn

Allergen Warning Checker

Flag common food allergens

Fitness Workout Builder

Assemble training routines

Step Goal Forecast

Predict progress toward step goals

Hydration Reminder Tool

Plan water reminder timing

Sleep Routine Planner

Structure a better bedtime plan

Heart Rate Zone Guide

Review training zone ranges

Run Pace Predictor

Estimate running pace targets

Bike Ride Effort Calculator

Estimate cycling effort quickly

Stretching Routine Maker

Build quick flexibility sessions

Aquarium Water Change Calculator

Calculate water change volume and schedule

Astigmatism Test Chart

Screen for astigmatism with an on-screen sunburst chart

Baby Feeding Log

Track baby feeding times and amounts

BBQ Meat Quantity Calculator

Estimate meat quantity needed per guest

Body Measurement Tracker

Log body measurements over time

Burn Percentage Calculator

Estimate burn severity using the rule of nines

Canning Time Guide

Reference safe canning times by food and altitude

Dental Chart Tool

Interactive dental chart for tracking tooth conditions

Insulin Sensitivity Factor Calculator

Estimate ISF and correction bolus dosing

Prescription Abbreviation Decoder

Decode pharmacy label shorthand into plain English

Sprint Speed Calculator

Calculate sprint speed, pace, and distance projections

Trail Difficulty Rater

Rate hiking trail difficulty using the NPS Shenandoah formula

Workout Split Planner

Build a weekly training split from proven archetypes

Yoga Sequence Builder

Build a timed yoga flow: search, reorder, export

Grip Strength Norm Lookup

Compare a grip strength reading against age/sex norms

Screen Time Break Reminder

20-20-20 rule reminder timer for eye strain prevention

Training Periodization Planner

Plan macro/meso/micro training cycles across a season

Fluid Resuscitation Calculator

Estimate initial IV fluid planning numbers

Waist to Height Ratio Calculator

Check waist-to-height ratio quickly

Medical Abbreviation Lookup

Look up common medical abbreviations

Meal Frequency Planner

Plan daily meal timing blocks

Recovery Day Planner

Rest day calculator using intensity, sleep and soreness

Standing Desk Interval Timer

Alternate sit and stand intervals throughout the day

Cold Plunge Timer

Time a cold plunge session with staged interval prompts

Injury Prevention Warmup Builder

Build a sequenced warmup routine for your activity

Water Aerobics Interval Timer

Run a poolside-readable work/rest interval timer