How to use the building natural period calculator
Estimate the natural vibration period of a building from its height, for earthquake and wind design. Enter building height in the field above; the approximate natural period, approximate frequency are computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “building natural period”, “building sway period”, “structure vibration time”, “calculate building natural period”, “find approximate natural period”.
Formula
Variables
- h — Building height (m)
Worked example
With building height = 30 m, the calculator gives approximate natural period ≈ 1.093427 s; approximate frequency ≈ 0.9145554 Hz.
Frequently asked questions
What is the building natural period calculator used for?
Estimate the natural vibration period of a building from its height, for earthquake and wind design. It helps with questions such as “building natural period”, “building sway period”, “structure vibration time”.
What is the formula for the building natural period calculation?
Approximate natural period (s) = 0.0853 × h^0.75. Approximate frequency (Hz) = 1 / [Approximate natural period]. Here h is building height (m).
What inputs do I need for the building natural period calculator?
You need building height in m. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the building natural period calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the building natural period result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.