Enter the number in sig fig calculator and hit the Calculate button to find the number of significnat figures.
To use the sig figs calculator, follow these instructions:
SigFig calculator is an online maths tool used for counting the number of significant digits in a number. It will tell you the reason why a digit is significant or insignificant.
This sig fig rounding calculator also gives other important information about a number. This information includes;
According to Wikipedia:
“Significant figures of a number are digits in the number that are reliable and absolutely necessary to indicate the quantity of something.”
In other words, the digits of a number or value which make a difference when used in any calculation are called significant figures.
Significant figures can be calculated using the sig figs rules.
In this calculator, every significant figure is explained using the rule it falls on. These rules are very important. Everyone should be familiar with these rules if they want to identify significant figures on their own.
These rules are:
All the non-zero digits in a number, no matter at which place they are, are significant. For example:
The zeros that are present between two significant figures are also significant.
The zeros that are present on the left side of a number before any significant figure are considered insignificant. In the same example as mentioned above:
If the number has a decimal point then the trailing zeros are significant.
But if the number is without any decimal point, trailing zeros are insignificant.
Identify the significant figures from these numbers.
12309
Solution:
1st number: 12309
All the digits are significant.
No. of sig figs = 5
2nd number: 0.090
9 and 0 after nine are significant.
No. of sig figs = 2
3rd number: 101.9
All the digits are significant.
No. of Sig figs = 4