Display solid colors/gradient scales fullscreen to detect dead pixels

Online countdown timer with custom duration and alerts

Online stopwatch with laps and pause

Pomodoro technique timer to boost focus

Set work hours, see real-time countdown to quitting time, today progress, slacking index and days to weekend.

Enter birth date and retirement age to calculate days to retirement, progress percentage and fun stats.

Pick two dates to calculate exact interval in days, hours, minutes, seconds with multi-unit conversion.

Enter birth date to see days lived, hours, minutes, plus fun stats like heartbeats and breaths.

Large digital clock with 12/24h format, multiple color themes, custom time offset. Fullscreen for maximum visibility.

Custom screensaver countdown, multiple clock styles and fullscreen mode

Real-time device sensor data display, gyroscope accelerometer compass visualization

Measure and draw angles on a canvas.

Overlay a draggable ruler to measure pixels on screen.

Convert and compare time across multiple time zones.

Measure ambient decibels in real time via microphone.

Generate a countdown poster with a target date.

Import a name list and draw winners fairly.

A free drawing canvas with color and brush options.

Visualize key presses and test your keyboard.

Test mouse clicks, wheel and movement.

A retro nixie-tube style digital clock.

A flip-animation style clock for your desk.

View the time and date of multiple cities at once.

Compress and extract ZIP, TAR and GZ files online.

Merge, filter and export ICS calendar files.

Plan task schedules and export a Gantt chart.