Sleep Debt Tracker - Online Cumulative Sleep Loss Calculator
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
UD5 Toolkit
How are you feeling today?
Log daily sleep to see cumulative sleep debt or surplus over weeks. Visualizes chronic sleep loss trends. Stores data locally in your browser only.
Build good habits by tracking daily completions. Visualize streaks and progress. Pure browser storage keeps your habit data private and offline-capable.
Set a nap timer with optional gentle white noise or lullabies (Web Audio). Reminder to put baby down. Fully local, no ads.
Simple interface for kids to log reading minutes and pages. Add book titles. Print weekly report. Local.
Set a recurring timer that reminds you to check your posture. Desktop notification with a gentle chime. Stay healthy.
Estimate ovulation day and fertility window from last menstrual period. Displays probable conception dates. Informational only; processes locally in browser.
Enter clock-in/out times for each day and see total hours worked, overtime. Calculate weekly pay based on hourly rate. Local storage.
Plot your child's height and weight on WHO growth charts over time. Data saved locally for privacy. Visualise growth trajectory.
Log your assets and liabilities to calculate your net worth over time. Data saved only in your browser for security. Simple and clutter-free.
A digital sticker board where kids can place virtual stickers for completed chores or goals. Encourages positive behavior with no paper waste.
Select month and get a toβdo list (clean gutters, check weatherstripping). Local storage, printable.
Calculate total work hours and pay from time-in/out entries. Supports overtime and breaks. Generate a printable timesheet. All local.
Calculate the exact number of days, weeks, months, and workdays between two dates. Visual calendar highlights. Perfect for projects.
Use your device microphone to measure approximate sound pressure level in dB. Not calibrated, for rough reference. Local only.
Enter total balance and limit to see utilization percentage. See how it affects credit score bands.
Measure your waistβtoβhip ratio and learn about associated health risks. WHR interpretation. Educational only.
Estimate calories burned for various activities like running, cycling, swimming based on duration and body weight. Informational and motivational.
Find the optimal goβtoβsleep or wakeβup times based on 90βmin sleep cycles. Wake up between REM cycles and feel refreshed.
Project your retirement savings growth with monthly contributions, employer match, and CAGR. Interactive chart. Financial data stays on your device.
Boost your productivity with the Pomodoro technique. Customizable work and break intervals with desktop notifications. Simple, clean, and works offline.
Calculate your Basal Metabolic Rate using the MifflinβSt Jeor equation. Know how many calories you burn at rest. All data private.
Collect popular old wives' tales (Chinese gender chart, ring test, cravings) for a purely-for-fun gender prediction. No scientific claims. Local only.
Enter your bird species and weight to find the correct harness size. Visual adjustment guide.
Enter baby's weight in lbs or kg to see suggested diaper sizes across major brands. General reference, no data collected.
Select an activity, enter your weight and duration, and see the estimated calories burned. Based on MET values.
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.
Enter appliance loads and battery capacity to estimate how long your RV can run without recharging. Local simulation.
See your current push subscription details. Trigger push and notificationclick events manually to debug.
Estimate bulb mode exposure time needed for different light sources and distances. Experimental photography aid.
Check your Body Mass Index using standard or metric units. Get a health category analysis instantly. Educational purpose only; data stays private.