ONE FORMULA, ONE ANSWER
Horizontal Coriolis acceleration calculator
Compute the Coriolis acceleration component perpendicular to horizontal motion at a stated latitude. 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
Horizontal Coriolis acceleration magnitude aₕ
Enter values and select Calculate.
aₕ = 2 Ω v |sin φ|
Assumptions
Required: a local horizontal tangent plane on a rotating sphere and latitude from −90° to 90°. The result is the horizontal magnitude. Direction is right of motion in the northern hemisphere and left in the southern hemisphere. Excluded: vertical motion, centrifugal acceleration, and trajectory integration.
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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