UD5 Toolkit
Eye Dominance Test - Online Find Your Dominant Eye
Simple interactive eye dominance test: hold up a virtual dot and see which eye stays aligned. Educational.
Health & Fitness Tools - Wellness
84+ toolsUV Index Reference - Online Exposure Category & Protection
See the current UV index forecast or enter a value to learn protection needed (SPF, hat, shade). Educational.
Waist‑to‑Hip Ratio Calculator - Online Body Shape Health Indicator
Measure your waist‑to‑hip ratio and learn about associated health risks. WHR interpretation. Educational only.
Emoji Mood Meter - Online Daily Feeling Check‑In
Select an emoji that matches your mood and log it to a simple calendar. Self‑awareness tool. Local only.
Work Break Reminder - Online Eye‑Care & Stretch Timer
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
Meditation Bell Timer - Online Interval Singing Bowl
Set a meditation session with singing bowl sounds at start, interval chimes, and end bell. No ads, pure serenity.
Body Fat Percentage Calculator - Online US Navy & BMI Method
Estimate body fat percentage using the US Navy circumference method or BMI-based formula. Private and instant, all data stays on your device.
Macronutrient Calculator - Online Protein Carb Fat Split
Determine your ideal daily macronutrient intake based on TDEE, goal, and diet preference. Free nutrition planning tool with local computation.
Gratitude Journal - Online Daily Thankfulness Log
Write three things you’re grateful for each day. Saved locally. Export as text. Boost mental well-being.
Water Intake Tracker - Online Daily Hydration Logger
Log your daily water consumption with one click. Set a goal and track progress. Data stored locally for privacy. Simple and clean interface.
Mood Tracker - Online Daily Emotion Journal & Calendar
Log your daily mood and view trends on a calendar. Encourages mindfulness. Data stored only in your browser's localStorage for complete privacy.
Interval Timer - Online HIIT & Tabata Workout Clock
Set up high-intensity interval training rounds with work and rest periods. Audio alerts and customizable sets. Runs in background, no download.
Blood Alcohol Content Estimator - Online BAC Chart
Roughly estimate your BAC based on weight, gender, drinks consumed, and time. Educational; do not drive.
VIA Character Strengths Generator - Online Positive Psychology
Take a lighthearted inventory of your character strengths (not official VIA). Self-reflection tool. All in browser.
BMI Calculator - Online Body Mass Index Tool
Check your Body Mass Index using standard or metric units. Get a health category analysis instantly. Educational purpose only; data stays private.
Body Measurement Tracker - Online Fitness Progress Logger
Log neck, chest, waist, hip, and limb measurements over time. See changes on a chart. All data stored locally.
Human Skeleton Anatomy Viewer - Online Interactive Bones
Click on any bone in the human skeleton to see its name and learn about it. Rotatable 3D‑like view. Study aid.
Posture Reminder Timer - Online Sit Up Straight Alert
Set a recurring timer that reminds you to check your posture. Desktop notification with a gentle chime. Stay healthy.
Yoga Sequence Builder - Online Drag & Drop Poses
Build a yoga flow by dragging pose cards into a sequence. Pose reference images included. Print or share your flow.
Color Noise Generator - Online White Pink Brown Blue Violet
Play infinite sound loops of white, pink, brown, blue, and violet noise. Volume control. Help focus or mask tinnitus.
Reaction Time Test - Online Click & Sound
Measure your visual and auditory reaction speed. Average and best times shown. No data collected. Pure Javascript timing.
Simple Water Tracker - Online Click Glass Count
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Ambient Sound Mixer - Online Rain, Fire & Coffee Shop
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
Pregnancy Due Date Calculator - Online LMP & Gestation Tool
Estimate the baby's due date based on last menstrual period (LMP) or conception date. Also shows current week and trimester. Educational only.
Activity Calorie Burn Calculator - Online Exercise Estimator
Estimate calories burned for various activities like running, cycling, swimming based on duration and body weight. Informational and motivational.
Calorie Burn Calculator by Activity - Online Estimate
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
Self‑Care Bingo - Online Generate Wellness Grid
Create a printable bingo card filled with self‑care activities. Relax, exercise, hydrate. Tick them off.
Wind Chill & Heat Index Calculator - Online Feels Like
Enter temperature and wind speed (or humidity) to get the 'feels like' temperature. Safety guidelines included.
One Rep Max Calculator - Online Strength & Lifting Estimator
Estimate your one‑rep max (1RM) from weight and reps. Supports multiple formulas (Epley, Brzycki). Training percentages table.
Air Quality Index Lookup - Online AQI by City
Enter a city name to fetch its current Air Quality Index from public APIs. Color-coded health warning. No login.
Noise Generator - Online White Brown & Pink Noise Machine
Play white, pink, or brown noise to aid focus, sleep, or tinnitus relief. Infinite loop and volume control. Works in background; no downloads.
Sleep Cycle & REM Calculator - Online Best Bedtimes
Find the optimal go‑to‑sleep or wake‑up times based on 90‑min sleep cycles. Wake up between REM cycles and feel refreshed.
Children's BMI Calculator - Online Percentile & Growth
Calculate BMI for children and teens (ages 2‑19) and see the percentile based on CDC growth charts. Educational only.
Mood Color Journal - Online Track Days with Hues
Pick a color for each day's mood and see a month‑at‑a‑glance heatmap. Data stored locally. A private emotional log.
Clinical Color Blindness Tester - Online Ishihara Plate Style
View a series of digital Ishihara‑style plates. Not a diagnostic tool, just educational. Read numbers.
Ideal Weight Chart - Online BMI & Health Range Guide
See the healthy weight range for your height using standard BMI chart. Gender‑specific data. Quick reference.
BMR Calculator - Online Basal Metabolic Rate & Calories
Calculate your Basal Metabolic Rate using the Mifflin‑St Jeor equation. Know how many calories you burn at rest. All data private.
Meditation Chime Timer - Online Mindfulness Bell
Set a meditation duration with optional interval chimes. Soothing bell sounds at the start and end. No ads.
Emotion Moodboard Creator - Online Feelings Board
Drag emotion word cards onto a canvas to visualize your day. Mix and match. Screenshot to share. Therapeutic.
Sleep Log Tracker - Online Record Hours & Quality
Log the hours you slept each night and rate the quality. See a weekly bar chart. Local storage.
Blood Pressure Log - Online Track & Chart Readings
Record daily systolic/diastolic readings and pulse. See a trend chart. All data saved locally in your browser.
Binaural Beats Generator - Online Brainwave Focus & Relax
Create binaural beats by setting base frequency and beat frequency. Use headphones. For relaxation or focus. Web Audio API.
Daily Water Intake Calculator - Online Hydration Goal
Enter your weight and activity level to get a recommended daily water intake goal. Reminder to drink up.
Advanced Ambient Noise Mixer - Online Rain, Wind & Cafe
Mix white noise, pink noise, rain, thunder, wind, and cafe sounds. Individual volume, save presets. Relax or focus. All client‑side.
BMI Chart & Ideal Weight Table - Online Reference
Look at a color‑coded BMI table for your height and see the healthy weight range. Simple reference.
Run Pace Calculator - Online Min/Mile & Min/Km Splits
Calculate your running pace per mile/km, finish time for a race, and split times. Essential for runners.
One‑Rep Max (1RM) Calculator - Online Lifting Progress
Estimate your one‑rep max from weight and reps. Supports Epley, Brzycki, Lombardi formulas. See your strength level.
Macronutrient Split Calculator - Online Protein, Carbs, Fat
Based on your calorie goal, get the perfect gram split of proteins, carbs, and fats. Adjust ratios. For fitness and health.
Daily Calorie Intake Estimator - Online BMR & Activity
Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure. Set goals for weight loss, maintenance, or gain.
Random Bodyweight Workout Generator - Online No‑Equipment
Get a random, no‑equipment workout with exercises, reps, and rest. Perfect for home fitness. Local algorithm.
Yoga Pose Library - Online Browse & Learn Asanas
Searchable catalog of yoga poses with illustrations, instructions, and benefits. For beginners and teachers. Static resource.
Pregnancy Due Date Calendar - Online Conception & Weeks
Enter LMP or conception date and get detailed week‑by‑week milestones, trimester info, and due date. Educational only.
Calories Burned While Sleeping – BMR‑Based Estimator
Based on your weight and hours slept, estimate how many calories you burn simply by sleeping. See the contribution of basal metabolic rate to daily energy use.
Exercise Form Checklist – Squat, Deadlift, Push‑up & More
Step‑by‑step checkpoints for proper form on common exercises. Compare your form against the checklist to avoid injury and maximize gains.
Jet Lag Planner – Pre‑Trip Light Exposure Schedule
Plan a personalized light exposure and avoidance schedule to minimize jet lag. Enter your origin, destination, and travel dates for a customized 3‑day adjustment plan.
HIIT Interval Timer - Online Custom Work & Rest
Set up high‑intensity intervals with work, rest, and rounds. Audio cues. Sweat without any app. Local only.
Basic First Aid Guide – Symptom Checker & Action Steps
Select common injuries or symptoms (burn, cut, sprain, choking) to see immediate first aid steps. For informational use; always call 911 in an emergency.
Skincare Routine Builder – AM & PM Steps by Skin Type
Select your skin type and concerns to get a basic morning and evening routine with product types (cleanser, moisturizer, SPF) in the right order.
Magnesium Food Finder – Search Foods High in Magnesium
Search a database of foods and sort by magnesium content per 100g or per serving. Learn which seeds, nuts, and greens boost your intake naturally.
Iron Deficiency Self‑Check – Symptoms & Risk Factors
Answer questions about fatigue, pallor, craving ice, and dietary habits to see if you might be at risk for iron‑deficiency anemia. Includes food sources of iron.