Rainfall Converter
Enter the rainfall amount and convert it instantly between mm, inch and litres per square metre.
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How to use
- Enter your value in the box above or select the units.
- The result updates live — no button to press.
- Change the value or unit and the new result appears automatically.
Note
1 mm of rain means 1 litre of water per square metre. That is why mm and L/m2 always have the same value.
Frequently Asked Questions (FAQ)
Which units does the Rainfall Converter support?
Millimetres, centimetres, inches, litres per square metre, cubic metres per hectare and litres per hectare, converted instantly as you type.
Does 1 mm of rain equal 1 litre per square metre?
Yes. One millimetre of rainfall over one square metre is one litre of water, which is why the converter can show both units together.
Can I convert in either direction?
Yes. Enter a value, pick the From and To units, or press the swap button to reverse the conversion.
Can I convert rainfall to a volume over land?
Yes. Litres per square metre, cubic metres per hectare and litres per hectare are included for that.