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Rainfall Calculator

Ecology
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Calculates total rainfall depth or rate based on measurements over time.

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Rainfall Depth (mm) and Rainfall Duration (hours) in the units shown.

Step 2

Read Rainfall Rate (mm/hour), Rainfall Depth (inches), and Rainfall Rate (inches/hour) in the results panel. Results update as you change the inputs.

Step 3

Choose a preset to load an example, then adjust the values for your situation.

Worked Examples

Example calculations

See the inputs and their calculated results.

Light Rain

Rainfall Depth (mm): 2.5 mm; Rainfall Duration (hours): 1 hours

Rainfall Rate (mm/hour): 2.5 mm/hour; Rainfall Depth (inches): 0.09842519685 inches; Rainfall Rate (inches/hour): 0.09842519685 inches/hour

Moderate Rain

Rainfall Depth (mm): 10 mm; Rainfall Duration (hours): 1 hours

Rainfall Rate (mm/hour): 10 mm/hour; Rainfall Depth (inches): 0.3937007874 inches; Rainfall Rate (inches/hour): 0.3937007874 inches/hour

Heavy Rain

Rainfall Depth (mm): 25 mm; Rainfall Duration (hours): 1 hours

Rainfall Rate (mm/hour): 25 mm/hour; Rainfall Depth (inches): 0.9842519685 inches; Rainfall Rate (inches/hour): 0.9842519685 inches/hour

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