Pendulum Length Calculator

want to calculate pendulum length? just enter Acceleration due to gravity (m/s2) Frequency (Hz) in the input fields of this calculator and the accurate Pendulum Length (m) in the result field. Whether you’re a student, educator this tool will certainly will make your work easier.

Pendulum Length Calculator

Enter any 2 values to calculate the missing variable

Pendulum Length Calculation tool

What is a Pendulum Length?

A pendulum’s length is the distance between the point of suspension and its center of mass. This length determines the period of the swing, which is the time it takes to complete one full oscillation.

Using Guide

To use the Pendulum Length Calculator is easy. Just follow these steps:

  1. Enter the acceleration due to gravity (g) in m/s².
  2. Enter the frequency (f) in Hz.
  3. Enter the pendulum length (PL) in meters.

You need to provide any two of these values to calculate the third. For example, if you know the gravity and frequency, you can find the pendulum length.

Example Input Values:

  • Gravity: 9.8 m/s²
  • Frequency: 0.5 Hz
  • Pendulum Length: (leave blank for the calculator to find)

How to Calculate Pendulum Length

The formula to calculate the pendulum length is:


PL=g4π2f2PL = \frac{g}{4 \cdot \pi^2 \cdot f^2}


Variable Description
PL Pendulum Length (meters)
g Acceleration due to gravity (m/s²)
f Frequency (Hz)


Let’s say we have:

  • Acceleration due to gravity (g) = 9.8 m/s²
  • Frequency (f) = 0.5 Hz

To calculate the pendulum length (PL):

1. Square the frequency: 0.52=0.250.5^2 = 0.25

2. Multiply by 4π24 \cdot \pi^2: 4(3.142)=39.484 \cdot (3.14^2) = 39.48

3. Divide gravity by this product: 9.8/39.48=0.2489.8 / 39.48 = 0.248

So, the pendulum length is approximately 0.248 meters.

Calculation Examples

Calculation Type Example Values
Basic g = 9.8, f = 0.5
Advanced g = 9.8, f = 0.5, PL = 0.248

Importance and Benefits

Importance Benefits
Understanding physics Accurate pendulum design
Education Easy calculation for students
Engineering Helps in designing clocks
Scientific research Accurate measurement tools
Practical applications Better understanding of motion


How do you calculate the length of a pendulum?

You can calculate it using the formula PL=g4π2f2PL = \frac{g}{4 \cdot \pi^2 \cdot f^2}.

What is the length of a 1-second pendulum?

For a 1-second pendulum, the length is approximately 0.248 meters assuming standard gravity.

What is the length of a pendulum with a frequency of 2 Hz?

Using the same formula, the length is approximately 0.062 meters.

Final Thought

The Pendulum Length Calculator is an excellent tool for anyone looking to explore or teach the dynamics of pendulums. It simplifies complex calculations into a few clicks, making learning and experimenting with physics accessible and fun.

Please do not hesitate to ask your question regarding about this calculator in the comment section, I will answer your question as soon as possible.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *