Compound Interval Calculator - Online Daily/Weekly Growth
Compute compound interest with various compounding frequencies (daily, weekly, monthly). Compare APY with simple interest. Local and secure.
UD5 Toolkit
Track your monthly plastic consumption and set reduction goals. Every piece counts. See the real impact of your choices.
* Estimates based on average production emissions (~4kg COâ per kg of plastic) and ocean leakage rates (~3%).
Record your current data to track progress over time.
| Month | Monthly Total | Goal | Saved | Action |
|---|---|---|---|---|
| No records yet. Start tracking! | ||||
Compute compound interest with various compounding frequencies (daily, weekly, monthly). Compare APY with simple interest. Local and secure.
Estimate total fuel cost for a road trip. Enter distance, vehicle MPG or L/100km, and fuel price. See cost per person for sharing. Simple & local.
Estimate calories burned during common exercises using MET values. Input weight and duration. Compare activities. Educational, not medical advice.
Estimate the fuel cost for a trip based on distance, vehicle mileage, and fuel price. Supports multiple units (miles, km, liters, gallons).
Enter distance and miles per day to estimate food carry weight and next resupply point. Longâdistance hiking.
Convert energy units: Joule, calorie, BTU, kilowatt-hour, electronvolt. Useful for science and household energy calculations. Fully local.
Estimate BAC based on gender, weight, drinks consumed, and time. Uses Widmark formula. Educational tool, never encourage drunk driving. Local only.
Toggle between full and reduced motion on a live animated page. See how to design for vestibular disorders. Educational.
Register a periodic background sync with a minimum interval. See the registration state and tags. Keep content fresh.
Log how many cycles since last refill and get an alert when it's likely empty.
Commit to 30 days of gratitude. Write 3 things each day, see progress. Data stays local. Mood boost habit.
Log floor time minutes for small pets. See weekly average. Ensure enough exercise. Local storage.
Log which family member takes which medicine and when. Reminders for next dose. Data stays local.
Log leftovers with date stored and set visual alerts when they need to be eaten. Reduce food waste. Local storage.
Simple tracker to record potty attempts, successes, accidents. See patterns. Data stays local. Aids in toilet training journey.
Track attendance for multiple subjects. Mark present/absent and see percentage. Data in localStorage. Simple student tool.
Keep track of stitches and rows for your knitting projects. Multiple counters with increase/decrease shortcuts. Data saved in your browser.
Track odometer readings, distance, fuel fill-ups and compute MPG/L/100km. Data stored in localStorage. Simple expense summary for tax or budgeting.
Track up to 5 habits with a visual chain. Tap to mark day as done, see longest streaks. Data saved in your browser. Inspired by 'Don't break the chain' method.
Track days of sobriety with a motivational counter and milestone celebrations. Set quit date and see time elapsed in days, hours, minutes. Private & local.
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.
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.
Record daily systolic/diastolic readings and pulse. See a trend chart. All data saved locally in your browser.
Shows a counter of how many seconds you have been idle. Tracks mouse and keyboard activity without recording.
Snap or type expense details and store them locally. Categorize and see monthly totals. No cloud, no signâup.
Keep track of a tennis match: points, games, sets, and deuce. Supports tiebreak. Great for friendly matches. Local.
Keep a simple list of movies you want to watch. Add notes and check them off. Purely local storage.
Add book titles and authors to a toâread list. Move them to 'finished' and add a rating. Data saved locally.