Horloges utiles sur le web
Outils en mode sombre inspirés des horloges en ligne : alarmes avec son et notifications, minuteurs et heure mondiale — avec des URL rapides et indexables.
06:04:38 AM
mardi 10 novembre 2026
Local System Time
Utility Suites & Categories
Select a suite to open full-featured online calculators, timers, and timing utilities.
Réveil
Reliable browser alarms with recurring options, multiple schedules, and Web Audio API synthesizer fallbacks.
Minuteur
Custom and preset countdowns with visual progress rings, fullscreen mode, and audible notifications.
Chronomètre
Precision millisecond stopwatch tracking with split times, fastest/slowest lap highlighting, and lap export.
Horloge mondiale
Live local times across global cities with automatic Daylight Saving Time handling and multi-city overlap planner.
Date et calendrier
Exact biological age calculator, working business days counter, date differences, and leap year checks.
Calculatrices
Instant percentage calculators, metric-imperial scientific unit converter, and keyboard-accessible basic calculator.
Productivité
Ultradian sleep cycle planner, Pomodoro focus sprints, customizable interval HIIT timers, and event countdowns.
Convertisseurs
Scientific unit conversions across area, volume, pressure, energy, power, fuel economy, and cooking measurements.
Calculatrices financières
Financial loan EMI calculator, compound growth modeling, GST/VAT invoices, profit margins, and savings goals.
Outils de texte
Client-side text tools: word & character counting, case conversions, duplicate line removal, and diff comparison.
Popular Utility Tools & Shortcuts
Engineered for Accuracy, Privacy & Offline Utility
UtilityClock is built from the ground up without third-party tracking, heavy analytics scripts, or remote calculation servers. Everything computes locally on your device.
100% Client-Side Privacy
Your alarm times, dates of birth, stopwatch laps, and calculator inputs never leave your device. No accounts, cookies, or remote logging.
Offline PWA Capable
Equipped with a modern Progressive Web App Service Worker that precaches core tools and audio chimes so you can keep working even when disconnected.
Microsecond Native Precision
Timers rely on high-resolution performance.now() and Web Audio synthesis rather than drifted interval loops.