How to Find Significant Figures with Online Calculators?

How to Find Significant Figures with Online Calculators?

Written by Deepak Bhagat, In How To, Technology, Published On
September 17, 2021
Last modified on February 2nd, 2023

Significant figures are numbers, which are expressed in the form of digits. The digits of the sig figs carry a meaningful representation of the numbers. The term “ significant digits is often used instead of figures. We can determine the number of significant figures by counting the values, which start from the first non-zero digit from the left side. For instance, 13.47 has four significant figures. It becomes complex to calculate when too large or small values are taken into account. For ease, try out the sig fig calculator that helps you to turn any number & expression into a new number along with the desired number of significant figures.

How to Find Significant Figures with Online Calculators?

What are significant figures?

Significant figures refer to the number, which carries a contribution to the measurement. The sig figs are considered to be a useful method that helps to round the final calculation. These figures are usually used by engineers or scientists in calculating the quantity of any measurement such as length, volume, mass, etc.

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The main purpose of using the significant figures is to understand the precision & accuracy of the significant figures. Calculating the sig figs manually is difficult because you need to follow the sig fig rules that make the calculation complex. Simply, consider the significant figures calculator that tells how many significant digits are there in a number. The sig fig calculator also displays which numbers are significant and which are not.

Rules for Significant Figures:

You can use the below-mentioned rules for determining the significant number. You can also try the sig figs calculator for quick calculation for significant digits.

  • All of the non-digits in a number are significant.
  • Zeros that are placed in between two non-zero digits are known as significant.
  • All zeros before and after the non-zero digits are not significant.
  • Zero at the right side of the decimal point is called significant. Note: only in that condition when the non-zero digits are not following them.
  • All of the zero on the right of the last non-zero and after the decimal point are called significant.
  • All the zeros, which are placed on the right of the last non-zero digit, are significant. If they are coming from the measurement.

How to Find Significant Figures by using the Sig Fig Counter:

The Sig Fig Calculator is a web-based handy tool that is used to determine the total significant figures present in a given number. Because of its user-friendly interface, anyone can use the online calculator without any hassle. You should have to learn the rules first for finding the significant figures in a number. If you don’t have a clear concept of the rules, then you would not be able to calculate the sig figs on your own.

  • The first step is to enter the expression or a number for which you need to find the significant numbers into the mentioned section of the tool.
  • Now, simply hit the enter button to round the figure that you need to round off, but this field is an option so don’t be a worry.
  • After pressing the enter button, the sig fig calculator will show you the rounding significant figures, number of sig figs, number of decimals, and turn the sig figs in e-notation.


In this article, we have defined the rules that you can utilize for calculating significant numbers. We also mentioned how to calculate the sig fig by using the free sig fig calculator if you are not good at doing the calculations. However, if you still want to do it by yourself then, you need to practice for it again and again until you become an expert in calculating the significant figures manually.

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