Fast · free · private
Useful tools, ready when you are
Simple browser utilities for quick decisions, time, data and everyday tasks.
No accounts · No tracking · Most tool data stays on your device
Quick access
Popular tools
Browse everything
All tools
⏰ Time Utilities
5 toolsAlarm Clock
Set online browser alarms with snooze, custom tones, and local sound alerts.
Set alarm →Timer
Precision countdown timer with fast presets and synthesized chime alerts.
Start timer →Stopwatch
Millisecond precision stopwatch with split laps and clipboard export.
Open stopwatch →World Clock
Keep track of multiple global time zones, UTC offsets, and daylight indicators.
View world clock →Sleep Calculator
Plan practical bedtime and wake-up windows around complete sleep cycles.
Calculate sleep →🎲 Random Decision & Generation
5 toolsRandom Team Generator
Split any list of names into fair, evenly sized random teams instantly.
Generate teams →Wheel Picker
Add your own choices and spin a cryptographically fair multi-option wheel.
Open wheel picker →Yes or No Wheel
Spin a cryptographically fair wheel for an instant random yes or no decision.
Spin the wheel →Dice Roller
Roll D4–D20 dice with unbiased cryptographic randomness in your browser.
Roll dice →Random Word Generator
Generate random words with multilingual datasets and useful length filters.
Generate words →⇄ Data & Media Converters
2 toolsBuilt for privacy
Most Sikelia tools keep their working data on your device. There is no account system and no visitor analytics. Timers, clocks, random tools, converters and the image compressor run in your browser, while local storage is used only for bounded settings or convenience state where a tool explicitly supports resume/persistence. The one server-backed exception is Private Note: the browser encrypts the note before upload, the decryption key stays in the URL fragment, and the server stores encrypted bytes only until the first successful read or expiry. Read the full Privacy Policy for storage, infrastructure and GDPR details.