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.
UD5 Toolkit
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.
Follow an animated circle that guides you through the 4‑7‑8 breathing pattern. Inhale 4s, hold 7s, exhale 8s. Counts cycles and provides haptic cues.
Set up high‑intensity intervals with work, rest, and rounds. Audio cues. Sweat without any app. Local only.
Log the hours you slept each night and rate the quality. See a weekly bar chart. Local storage.
Enter LMP or conception date and get detailed week‑by‑week milestones, trimester info, and due date. Educational only.
Get a random, no‑equipment workout with exercises, reps, and rest. Perfect for home fitness. Local algorithm.
Enter your weight and activity level to get a recommended daily water intake goal. Reminder to drink up.
Based on your calorie goal, get the perfect gram split of proteins, carbs, and fats. Adjust ratios. For fitness and health.
Record daily systolic/diastolic readings and pulse. See a trend chart. All data saved locally in your browser.
Look at a color‑coded BMI table for your height and see the healthy weight range. Simple reference.
Searchable catalog of yoga poses with illustrations, instructions, and benefits. For beginners and teachers. Static resource.
Measure your visual and auditory reaction speed. Average and best times shown. No data collected. Pure Javascript timing.
Set a meditation duration with optional interval chimes. Soothing bell sounds at the start and end. No ads.
Find the optimal go‑to‑sleep or wake‑up times based on 90‑min sleep cycles. Wake up between REM cycles and feel refreshed.
Estimate your one‑rep max from weight and reps. Supports Epley, Brzycki, Lombardi formulas. See your strength level.
Mix white noise, pink noise, rain, thunder, wind, and cafe sounds. Individual volume, save presets. Relax or focus. All client‑side.
Calculate your Basal Metabolic Rate and Total Daily Energy Expenditure. Set goals for weight loss, maintenance, or gain.
Drag emotion word cards onto a canvas to visualize your day. Mix and match. Screenshot to share. Therapeutic.
Play white, pink, or brown noise to aid focus, sleep, or tinnitus relief. Infinite loop and volume control. Works in background; no downloads.
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
Pick a color for each day's mood and see a month‑at‑a‑glance heatmap. Data stored locally. A private emotional log.
See the healthy weight range for your height using standard BMI chart. Gender‑specific data. Quick reference.
Tap a glass icon each time you drink a cup of water. See your daily intake. Reminders optional. Local storage.
Log neck, chest, waist, hip, and limb measurements over time. See changes on a chart. All data stored locally.
Enter temperature and wind speed (or humidity) to get the 'feels like' temperature. Safety guidelines included.
View a series of digital Ishihara‑style plates. Not a diagnostic tool, just educational. Read numbers.
Create a printable bingo card filled with self‑care activities. Relax, exercise, hydrate. Tick them off.
Roughly estimate your BAC based on weight, gender, drinks consumed, and time. Educational; do not drive.
Estimate your one‑rep max (1RM) from weight and reps. Supports multiple formulas (Epley, Brzycki). Training percentages table.
Calculate BMI for children and teens (ages 2‑19) and see the percentile based on CDC growth charts. Educational only.
Click on any bone in the human skeleton to see its name and learn about it. Rotatable 3D‑like view. Study aid.
Set a recurring timer that reminds you to check your posture. Desktop notification with a gentle chime. Stay healthy.
Calculate your running pace per mile/km, finish time for a race, and split times. Essential for runners.
Take a lighthearted inventory of your character strengths (not official VIA). Self-reflection tool. All in browser.
Create binaural beats by setting base frequency and beat frequency. Use headphones. For relaxation or focus. Web Audio API.
Determine your ideal daily macronutrient intake based on TDEE, goal, and diet preference. Free nutrition planning tool with local computation.
Estimate the baby's due date based on last menstrual period (LMP) or conception date. Also shows current week and trimester. Educational only.
Set a meditation session with singing bowl sounds at start, interval chimes, and end bell. No ads, pure serenity.
Calculate your Basal Metabolic Rate using the Mifflin‑St Jeor equation. Know how many calories you burn at rest. All data private.
Set a timer that reminds you to take a break, stretch, or follow the 20‑20‑20 rule. Desktop notification supported. Runs offline.
Log your daily mood and view trends on a calendar. Encourages mindfulness. Data stored only in your browser's localStorage for complete privacy.
Build a yoga flow by dragging pose cards into a sequence. Pose reference images included. Print or share your flow.
Measure your waist‑to‑hip ratio and learn about associated health risks. WHR interpretation. Educational only.
Enter a city name to fetch its current Air Quality Index from public APIs. Color-coded health warning. No login.
Log your daily water consumption with one click. Set a goal and track progress. Data stored locally for privacy. Simple and clean interface.
Estimate body fat percentage using the US Navy circumference method or BMI-based formula. Private and instant, all data stays on your device.
Estimate calories burned for various activities like running, cycling, swimming based on duration and body weight. Informational and motivational.
Check your Body Mass Index using standard or metric units. Get a health category analysis instantly. Educational purpose only; data stays private.
Mix multiple ambient sounds (rain, fireplace, cafe, forest) at different volumes. Create your perfect background noise. Local loops.
See the current UV index forecast or enter a value to learn protection needed (SPF, hat, shade). Educational.
Play infinite sound loops of white, pink, brown, blue, and violet noise. Volume control. Help focus or mask tinnitus.
Select an emoji that matches your mood and log it to a simple calendar. Self‑awareness tool. Local only.
Set up high-intensity interval training rounds with work and rest periods. Audio alerts and customizable sets. Runs in background, no download.
Simple interactive eye dominance test: hold up a virtual dot and see which eye stays aligned. Educational.
Write three things you’re grateful for each day. Saved locally. Export as text. Boost mental well-being.