Tools

How to play: Swipe (or press the arrow keys) to slide every tile in that direction. Tiles with the same number merge into one when they touch. A new tile appears after each move; make a 2048 tile before the board fills up. Score0 Best0 New game Game overTry again Swipe on the board, or use the arrow keys on a keyboard. Scoring: Every merge adds the value of the new tile to your score (two 8s merging gives 16 points). Roughly 90% of new tiles are 2s and 10% are 4s. A common strategy is to keep your biggest tile in a corner and avoid swiping in the direction that would pull it out. Your best score is saved in this browser only. ...

Add up to 5 habits you want to keep, then tap the pixel for each day you did it. Every habit gets its own one-year grid (today plus the previous 365 days), like the GitHub contribution chart. It follows the same idea as Habit Pixel and similar habit apps, rebuilt as a browser tool that needs no sign-up. Your current streak, days done this month and this month’s completion rate update instantly. Data is stored only in this browser (localStorage) and never sent anywhere; use “Export JSON” and “Import JSON” to move it to another device. ...

Turn a birthday party, housewarming, team dinner or kids’ event into a single Partiful-style invitation page you can share as a link. Fill in the event name, date and time, place, a short message and how guests should RSVP, then press “Create invite page” to get a shareable URL. Anyone who opens the link sees a themed invitation with an “Add to calendar” button that opens Google Calendar. There is no account and no server storage: everything lives inside the URL itself. ...

How to play: Tap a card to flip it, then tap another. If the two match they stay open; if not, they flip back. Clear the whole board in as few moves and as little time as you can. Choose 4×4 (8 pairs) or 6×6 (18 pairs). 4×4 6×6 Moves 0Time 0:00 New game How it counts: A move is one pair of flips. The timer starts on your first flip and stops when the last pair is matched. A perfect 4×4 game is 8 moves (only possible with luck); 12–16 moves is a good score. On 6×6 the minimum is 18 moves; anything under 35 is solid if you focus on remembering positions. Your best score for each size is kept in this browser only. ...

How to play: Tap the box to start. When it turns from red to green, tap again as fast as you can. Do 5 tries to get your average; tapping while it is still red restarts that try. Your personal best is saved in this browser. Tap to start Wait for green, then tap 5 tries per round –Average (ms) –Best this round (ms) –Personal best (ms) New round Clear personal best Typical results: under 200 ms is very fast, 200–300 ms is average for a phone tap, over 350 ms is slow (or you were distracted). How it measures: The timer starts the instant the box turns green and stops on your tap (pointer down, so it does not wait for the release). Results include your screen’s refresh delay and touch latency, usually 10–40 ms, so compare against yourself rather than lab figures. The random red delay (1.5–4 s) stops you from guessing the timing. ...

Want to know what your air conditioner, space heater or gaming PC really adds to the power bill? Enter the appliance’s wattage (printed on its label or power brick), how many hours a day it runs, and the price you pay per kilowatt-hour (check your utility bill; the US average is about 17 cents). Tap a preset to fill in a typical wattage. The result shows the estimated cost per day, month and year, plus the kWh used. Real usage varies with thermostat settings and cycling, so treat this as an estimate. ...

Enter your height and weight to get your Body Mass Index (BMI) and the World Health Organization category it falls into. Use the toggle to switch between US units (feet, inches, pounds) and metric (centimeters, kilograms). The tool also shows the weight range that would put you in the “normal” band for your height. BMI is a simple screening estimate for adults: it does not measure body fat, and athletes, older adults, pregnant women and children need different assessments. It is not a medical diagnosis; talk to a doctor about your health. ...

Two quick date tools in one. Days between dates: pick a start and end date to see how many days and weeks apart they are, useful for countdowns, deadlines, age in days, or how long since an event. Add days to a date: enter a start date and a number of days (use a negative number to go back) to find the resulting date, handy for “30 days from today” return windows, notice periods or medication schedules. Press “Today” to fill in the current date. Dates are counted by calendar days, ignoring time of day and time zones. ...

Comparing a job that pays by the hour with one that quotes a yearly salary? Enter an hourly rate to see the equivalent weekly, monthly and annual gross pay, or switch to “Salary to hourly” and enter a yearly figure to get the hourly rate. Hours per week defaults to 40 and weeks per year to 52; change these if you work part time, get unpaid time off, or want to account for holidays (for example 50 weeks). All figures are gross, before taxes, benefits and deductions. Overtime, bonuses and tips are not included. ...

Enter your bill amount, choose a tip percentage (or type your own), and set how many people are splitting the bill. The calculator instantly shows the tip, the total, and what each person pays. Turn on “Round up per person” if you want everyone to pay a whole-dollar amount with no loose change. Works for restaurants, delivery, taxis, salons, or any situation where you tip. All math runs in your browser; nothing is sent anywhere. ...