Keep it simple
Less to learn, fewer unnecessary steps. Open, enter, done—that is the experience we aim for.
Make the little things easier.
Yaya Tools is a lightweight, practical online toolbox. We turn the small tasks you need often—but should not have to spend much time on—into tools that work the moment you open a page.
Browse tools
From everyday calculations to developer debugging, get started quickly.
Browse pay and work, finance, health, math, date and time, text, and developer tools by task.
Our principles
Good tools quietly help you get things done.
Respect privacy
If data can be handled in the browser, it should not need to be uploaded. Your content should stay on your device whenever possible.
Ready when you are
Free, no account required, and available in Chinese and English. Wherever you are, you can get started quickly.
Made for everyday needs
Turn small hassles into handy tools.
From tidying text and converting encodings to creating QR codes and calculating time or money, Yaya Tools focuses on the little needs that come up again and again. We keep refining every tool to make it clear, dependable, and unobtrusive.
If a tool saves you a few minutes, this site has done its job.
Data and privacy
Your input should stay on your device whenever possible.
Most tools run directly in your browser, with no account required. Theme, favourites, and recent-use records stay on your device.
We use Google Analytics to understand basic site traffic; input entered into tools is not used for analytics. See our privacy policy for details of how data is handled.
View the privacy policyKeep in touch
Have a suggestion, question, or a tool you would like to see?
We continually improve tools based on feedback and prioritise fixes that affect result accuracy or normal use.