Support

Coffee Ratio — Brew Calculator

Contact Us

For questions, feedback, or bug reports, please email:
shangshouxin@gmail.com

FAQ

How do I change units (g/oz, ml/fl oz)?

Tap the gear icon in the top-right corner to open Settings. You can change weight, volume, and temperature units there.

What is the ratio number (e.g., 1:16)?

It means 1 gram of coffee to 16 grams of water. Adjust the slider to find your preferred strength. Lower ratios (e.g., 1:14) make stronger coffee.

Does this app require an internet connection?

No. Coffee Ratio works entirely offline. No account, no login, no data connection needed.

Where do the recommended parameters come from?

Brew parameters (temperature, grind size, brew time) are based on Specialty Coffee Association (SCA) guidelines and major brewer manufacturer recommendations.