Calorie Burn by Activity - Online Walking Running Cycling Estimator
Estimate calories burned during common exercises using MET values. Input weight and duration. Compare activities. Educational, not medical advice.
UD5 Toolkit
Estimate calories burned during common exercises using MET values. Input weight and duration. Compare activities. Educational, not medical advice.
Estimate BAC based on gender, weight, drinks consumed, and time. Uses Widmark formula. Educational tool, never encourage drunk driving. Local only.
Plot weekly weight gain against recommended ranges based on pre-pregnancy BMI. IOM guidelines displayed. Data stored in localStorage.
Approximate conversion from eyeglass prescription to contact lens power. Uses vertex distance formula. For educational purposes only, consult your optometrist.
Answer a short questionnaire based on common deferral criteria (travel, medication, tattoos) to see if you may be eligible to donate blood. Educational only.
Create your own oral rehydration solution by mixing salt, potassium, and sugar to WHO formula. Convert to teaspoon amounts.
Compare your worn sole pattern with reference images to determine pronation type and get shoe recommendations.
Enter skin type and UV index to estimate time to sunburn. Visual countdown reminder to reapply sunscreen or seek shade. Educational only.
Click to receive a random positive affirmation. Save favorites locally. A simple tool to boost your mood and mindset.
Generate a random sequence of yoga poses with images and descriptions. Choose difficulty and duration. Build a home practice routine. Local only.
Timer that reminds you to look at something 20 feet away for 20 seconds every 20 minutes. Customizable intervals and subtle sound/visual alerts.
Set recurring audio/visual reminders to check and correct sitting posture. Adjustable interval and notification style. Helps reduce back pain from desk work.
Write a private gratitude entry guided by daily reflective prompts. All entries stored only in your browser with optional export as text file. No account needed.
Track days of sobriety with a motivational counter and milestone celebrations. Set quit date and see time elapsed in days, hours, minutes. Private & local.
Schedule your iron supplement away from inhibitors (coffee, calcium). Visual reminder and log.
Plan insulin or other injection sites with a visual body map and date log. Prevent lipohypertrophy.
Reference for how long common supplements stay in the body. Inform taking frequency.
Pick target areas (neck, back, legs) and generate a 5‑min stretch routine with illustrated steps. Local.
Play pure tones at various frequencies to estimate your hearing range. Simple and educational.
Generate continuous white, pink, or brown noise for sleep or concentration. Adjustable volume with offline support via Web Audio API. No downloads needed.
Estimate due date from last menstrual period or conception date. Uses Naegele's rule and shows week-by-week milestones. Local calculator for informational use.
Convert pregnancy weeks into months and trimesters. Simple reference table with baby size comparisons. Informational only.
Guided breathing exercises with animated circle for inhale/hold/exhale. Includes box breathing, 4-7-8, and resonant breathing patterns. Customizable intervals.
Rate symptoms severity daily and add notes. Visual pain map. Export for doctor visit. Private local storage.
Log which family member takes which medicine and when. Reminders for next dose. Data stays local.
Animated circle guides your breathing: breathe in, hold, breathe out. Customizable ratios (e.g., 4-7-8). Soothing colors, optional bell sound. Purely local.
Find your healthy weight range using multiple medical formulas (Hamwi, Devine, Robinson, Miller). Frame size adjustment included. Instant local computation.
Display a Snellen chart on screen and mark distance for a fun self-test. Not a replacement for professional exam.
Track daily mood with emoji selection and optional notes. See weekly/monthly mood trends in a color-coded chart. All data stored privately in localStorage.
Log period start dates and cycle length locally. Predict next period and fertile window. Data stays in your browser's storage, never uploaded. Private by design.
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Estimate body fat percentage using neck, waist, hip (if female) measurements. Supports US Navy, Covert Bailey, and 3-site skinfold methods. No data sent to server.
Estimate ovulation day and fertility window from last menstrual period. Displays probable conception dates. Informational only; processes locally in browser.
Set a target weight and see estimated daily calorie deficit needed. Computes safe timeline based on 500-1000 kcal deficit. Includes BMR & TDEE estimation. Fully local.
Compute personalized daily water intake based on weight, climate, and exercise intensity. Converts to common cups/ounces. Purely local with no tracking.
Interpret your blood pressure reading based on American Heart Association and European Society of Cardiology categories. Visual gauge with actionable health insights.
Convert between pace (min/km, min/mile) and speed (km/h, mph). Predict race finish times for 5k, 10k, half and full marathon based on a recent split. Works offline.
Visualize how caffeine decays in your body over time. Enter intake amount and see remaining caffeine at bedtime to optimize sleep. Uses standard 5-hour half-life.
Calculate your one-rep max using Epley, Brzycki, Lombardi or O'Conner formulas. Predict maximum lifting capacity and plan progressive overload. 100% local processing.
Calculate infant weight, length, and head circumference percentiles using WHO and CDC reference data. Visual growth chart and interpretation for parents.