Beat Frequency Calculator
〰 Oscillations & waves. Use the Beat frequency formula to find beat frequency, frequency 1, frequency 2: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Beat frequency | Hz |
| Frequency 1 | Hz |
| Frequency 2 | Hz |
Worked example
Find the beat frequency when Frequency 1 = 444 Hz, Frequency 2 = 440 Hz.
Using fbeat = |f1 - f2|: Beat frequency = 4 Hz.
Frequently asked questions
What is the formula for Beat frequency?
fbeat = |f1 - f2|.
What do the letters stand for, and what units are used?
Beat frequency in Hz, Frequency 1 in Hz, Frequency 2 in Hz.
How do you calculate beat frequency?
Put the values into fbeat = |f1 - f2|. For example, with Frequency 1 = 444 Hz, Frequency 2 = 440 Hz, beat frequency = 4 Hz.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (beat frequency, frequency 1, frequency 2) and fill in the others: it rearranges the formula for you.
