Question 1

What are significant figures?

Accepted Answer

Digits that carry meaning in a measurement. 3.04 has 3 sig figs. Leading zeros don't count; trailing zeros after decimal do.

Question 2

How do I count significant figures?

Accepted Answer

All non-zero digits count. Zeros between digits count. Leading zeros don't. Trailing zeros after decimal do. 0.00340 = 3 sig figs.

Question 3

How accurate are these calculations?

Accepted Answer

Our calculator uses double-precision floating-point arithmetic, accurate to about 15-16 significant digits for most calculations.

Question 4

Can I use the result in further calculations?

Accepted Answer

Yes, results are calculated to full precision. You can copy the exact value or use the rounded display depending on your needs.

Significant Figures Calculator - Free Online

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