When it comes to measurements in the physical sciences, determining significant figures is a crucial skill. From converting measurements, to really any type of equation used in science, using significant figures is the required way to give an estimated answer.

### How to Calculate Significant Figures

Determine if the number is a non-zero digit.

If the number is a zero, determine if it is between two non zero digits.

If the number is a zero, determine if it is in a number without a decimal point.

If the number is a zero, determine if it is to the right of the last non-zero digit within a set of numbers.