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Snow water equivalent calculator

Convert snow depth to water-equivalent depth using the density ratio.

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Snow water equivalent calculator processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

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Answer

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Convert snow depth to water-equivalent depth using the density ratio.

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Precision and calculation record
Rounding changes displayed numbers, not the calculation. Text, fractions, matrices and CSV schedules keep their own formatting. Automatic keeps up to 12 significant digits, with money shown to cents where applicable.
Step-by-step calculation
Inputs are substituted below. Each line evaluates the next operation; intermediate values are displayed to 12 significant digits while the calculation uses full precision.
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    Formula and assumptions
    Water-equivalent depth = snow depth × snow density/water density. Both densities use one unit; output depth uses the input depth unit. Densities are your assumptions, not a measured weather observation.
    Automatic precision shows numbers to 12 significant digits. Thousands separators such as 1,000 are accepted; use a dot for decimals.
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    Using Snow water equivalent calculator
    Convert snow depth to water-equivalent depth using the density ratio.
    Water-equivalent depth = snow depth × snow density/water density. Both densities use one unit; output depth uses the input depth unit. Densities are your assumptions, not a measured weather observation.
    Next: Snow weight calculator
    A worked example
    Example inputs: snow depth = 20, snow density = 100, liquid-water density in matching units = 1000. Water-equivalent depth = 2.
    Before you use the result
    Water-equivalent depth = snow depth × snow density/water density. Both densities use one unit; output depth uses the input depth unit. Densities are your assumptions, not a measured weather observation.
    Example results for snow depth
    These examples use Snow density: 100; Liquid-water density in matching units: 1000. They are reference calculations, not recommended settings.
    Snow depthWater-equivalent depth
    101
    202
    404
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    ToolOctopus. “Snow water equivalent calculator.” Updated 2026-09-26. https://tooloctopus.com/snow-water-equivalent-calculator.
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