To use the sig fig calculator:

- Enter the number in the input box.
- Use the scroll bar to set the round value.
- Hit the
**Calculate**button to get the*rounding significant figures*.

Significant figures are the meaningful digits in a number. They tell us the accuracy or usefulness of a number to an extent.

**For example,**

The number **2304** has **4** significant figures in it,

while the number **0.0430** has **3** significant figures which are **4, 3, and 0**.

Significant digit calculator eases the calculation of significant figures in a complex number. For manual calculation, there are some rules of significant figures that are also incorporated in this tool.

Below are the rules to find significant figures:

**1.** All non-zero digits are significant figures.

**2.** All zeros are significant if they are between any non-zero digits.

**3.** Zeros are not significant if they are on the left side (leading) of the first non-zero number.

**4.** Trailing zeros are significant if they come after the decimal point.

**5.** Trailing zeros are not significant if the number does not contain a decimal point.

Find the significant figures in the following numbers.

81.0070

** 0.0038210** has **5** significant figures which are **38210**. The zeros on the left side will not be accumulated as per the significant figures rule

**81.0070** has **6** significant figures. See the rules above for reference.

How many significant figures are there in **2020**?

There is a total of **3** significant figures **2, 0** and **2** in **2020**.The trailing zero on the right hand will not be considered as a significant figure because there is no decimal in the number.

How many significant figures does **0.0560** have?

0.0560 has **3** significant figures which are **5, 6** and **0**.

How many significant figures are there in **500**?

The number **500** has only **1** significant figure **5**. The trailing zeros are not significant in this case.

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