WetMath: Aquarium Calculator

The essential aquarium toolkit. Precise reef dosing, tank volume, & flow rate math simplified. No login, no cloud—just fast, accurate calculations for every fish keeper.

Stop guessing and start measuring. WetMath is the essential tool for freshwater and reef tank hobbyists who demand precision. Whether you’re aquascaping a new build or maintaining a delicate coral reef, WetMath provides the exact calculations you need to succeed. +1

Why WetMath?

Built for Reefers & Aquarists: Specialized tools for salt mix adjustments, dosing, and flow rates.

Simplified Planning: Calculate tank volume, substrate weight, and heater requirements in seconds.

Save Money: Estimate your power costs and evaporation loss to optimize your setup.

Privacy First: No accounts. No cloud. No tracking. Your data stays on your device.

Essential Hobbyist Tools:

Volume & Weight: Exact water and glass weight calculations for safety.

Dosing & Chemistry: Salt mix adjustments (SG) and water weight conversions.

Equipment Optimization: Pump flow, turnover rates, and heating/cooling needs.

Substrate Calculator: Determine exactly how much sand or gravel you need.

Operational Math: Evaporation estimators and power cost calculators.

Universal Support

Full support for both US Customary and Metric units. Designed for efficiency so you can spend less time on math and more time enjoying your aquatic life.

Privacy Here is what we collect and why: App performance data: device type, OS version, app version, and coarse location derived from public IP address. This helps us understand where the app is being used, which devices are in use, and which app versions are active. This data is retained for up to 90 days on servers we control. Google Firebase Analytics: anonymized usage data, including screen views, used to understand which features are used and how often. Google Mobile Ads: the free version of the app displays banner ads. If tracking is disabled, ads may be less relevant. If tracking is allowed, ads may be more relevant. WireStix Pro removes ads. Support contact information: if you contact support, you may provide your name and email address so we can reply. We do not use support emails for tracking. Support emails are deleted when no longer needed, or within 2 years. Safety We use analytics and operational data to detect abuse, scraping, misuse, and other activity that could interfere with the app or our systems.