ONE FORMULA, ONE ANSWER
Capillary Rise Calculator
Calculate static rise or depression in a circular capillary. Choose input units and calculate one value within the stated conditions.
Inputs
Calculations run in this browser. Scientific notation such as 1.2e-3 is supported. Do not group thousands.
Result
Capillary height change h
Enter values and select Calculate.
h = 2σ cosθ/(ρgr)
Assumptions
Required: σ,ρ,g,r>0 and 0≤θ≤180°. Thin circular capillary with negligible gas density and meniscus volume. θ is measured through the liquid; nonwetting depression is negative.
Displayed values are floating-point approximations. Design safety factors and unprovided error contributions are not calculated.
Formula references and credits
NaNa Lab created the code, descriptions, icons and preview images. Text, figures and code from the linked references have not been reproduced.
Physical constants: NIST / CODATA 2022. The values of μ₀ and ε₀ are measured recommendations, not exact defining constants. Values and precision notes are in the source record.
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