Wave Calculator
Calculate wave speed, frequency or wavelength from the other two. Convert units, find the period and view an illustrative normalized wave.
YOUR CALCULATION
Result
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Calculation steps
Work through one step at a time or reveal the complete calculation. The steps use your current inputs.
How to calculate
In the model v = fλ, multiply frequency by wavelength to obtain wave speed. Rearrange to solve frequency or wavelength. Period is the reciprocal of frequency. The graph shows two wavelengths with normalized amplitude.
v = fλ; λ = v/f; f = v/λ; T = 1/f
Worked example
A wave traveling at 340 m/s with frequency 170 Hz has wavelength 340/170 = 2 m and period 1/170 ≈ 0.00588235 s.
Assumptions and input details
Supply the wave speed for the actual medium and conditions. No speed of sound or material property is assumed automatically. The plotted amplitude is normalized to 1 and does not represent a measured signal.
References: OpenStax: wave equations
Unit definitions
Unit selection is independent of language. Each selector contains only units for its physical quantity. Calculations use defined base units internally.
Choose from 23 length definitions, including explicitly labelled regional measures. Area conversions square the length factor; geometric volumes cube it.
Regional measures are not interchangeable merely because their names look similar. This is a documented selection, not a claim to include every historical unit.
SI prefixes are explicit: for example, milli means one thousandth, micro one millionth and kilo one thousand. Changing a unit changes the interpretation of the entered number.
NIST measurement tables · Japanese traditional units · Mainland China and Hong Kong unit distinctions
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
Is my input uploaded?
The calculation runs in your browser. No account, file upload or external AI service is required. Inputs are not saved between page reloads.
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