Free Online Environment Calculators – Nature & Climate Tools

Explore how natural systems respond to rain, runoff, and terrain with our free online environment calculators.
These tools help you visualize environmental processes like rainfall, lake levels, and watershed balance — perfect for students, engineers, and nature enthusiasts.

💧 Rainfall Lake Rise Calculator

Estimate how rainfall changes lake water levels based on area, rainfall, and runoff — includes glacier adjustment.

🌦️ Rainfall Runoff Calculator

(Coming soon) Predict how much of the rainfall becomes surface runoff for any terrain type.

🌨️ Snow Depth Calculator

(Coming soon) Convert rainfall (mm or inches) to estimated snow depth depending on temperature and snow type.

Rain Probability & Intensity Tool

(Coming soon) Predict how much rainfall volume you can expect based on intensity (light/moderate/heavy) and duration.

❄️ Snowmelt & Glacier Contribution Estimator

(Coming soon) Estimate additional water input from melting snow or glaciers during warm periods.

🌎 Watershed Volume & Balance Tool

(Coming soon) Estimate the total water volume in a lake or reservoir and visualize inflow/outflow balance.

Subscribe for updates

📘 Why Use Our Environment Tools

100% free and browser-based
Visual, data-driven approach for field and classroom use
Ideal for hydrology, civil engineering, and environmental studies
Accurate conversions between metric and imperial units

Are these tools suitable for professional use?

They’re designed for educational and planning purposes. For regulated hydrological assessments, professional models should be used.

Do the calculators use live weather data?

Current versions use manual input, but you can easily apply your own rainfall and temperature data.

Do I need to create an account?

No, everything works instantly in your browser – no signup required.

Are the results stored or shared?

No — all calculations are done locally in your browser.

ℹ️ About Our Environment Tools

Eqsy.io’s environment calculators make complex natural processes easy to understand.
From rainfall to runoff and evaporation, they translate hydrological equations into clear visual feedback — all free, no sign-up required, and optimized for desktop and mobile.