Home > Time & Conversion
FR 🇫🇷 EN 🇬🇧 ES 🇪🇸 AR 🇲🇦

Time & Conversion — Measure time and convert units

From a Pomodoro timer to structure your day, to timezone conversion for international meetings, metric/imperial unit conversion, clothing and shoe size guides, or number base conversion, our five tools cover everyday time and unit needs. Everything runs in your browser, with no signup or installation.

⏱️
Online Timer
Timer with sound alarm
 🌍
Time Zones
Real-time world clock
 📏
Unit Converter
Convert length, weight, temperature
 👕
Clothing Sizes
Size conversion guide
 🔢
Number Converter
Decimal, binary, octal, hexadecimal

Frequently asked questions

Are these time and conversion tools free?
Yes, all five tools are entirely free, with no usage limit and no signup. There is no premium version. The site is funded by Google AdSense advertising displayed in the margins, without interfering with usage.
Is my data sent to your servers?
Most conversions run client-side in your browser. The currency converter uses a live exchange-rate API to fetch today's rates, but no personal data (amount, identifier) is transmitted to that service or stored on our side.
How do I convert a Unix timestamp into a readable date?
Use the Unix Timestamp Converter: paste your number (seconds or milliseconds since January 1st, 1970) and get the date in ISO 8601 format and in your timezone. The reverse conversion (date to timestamp) is also supported.
Do these tools work on mobile?
Yes, the interface is fully responsive. The timer plays its alarm sound even in the background, and the converters work on smartphones and tablets without installation, ideal for cooking, travel or remote work.

Why use our Time & Conversion?

Managing your time and juggling different unit systems is part of daily life for professionals, students and travelers alike. Whether you are preparing a recipe by converting cups to grams, planning a call with a client on the other side of the world, or simply want to focus for 25 minutes on a task, our five tools answer these needs in one click.

Typical use cases are plentiful: a freelancer using a Pomodoro timer to stay productive, a sales rep checking the time in Tokyo before sending an email, a cook converting ounces to grams for an American recipe, a traveler consulting a size guide before buying clothes online, or a developer converting a decimal number to binary or hexadecimal.

These tools target a broad audience: students and teachers, freelancers and remote workers, travelers and expats, home cooks, online shoppers, developers and technicians. The unified interface lets you switch from one tool to another without having to relearn anything.

SmartGap differentiators: every tool is free, no signup and no intrusive ads. Most conversions run client-side in your browser. Only the currency converter uses a live exchange-rate API, and even then no personal data is transmitted or stored.

Explore other categories

Last updated: