Sig Fig Calculator
Perform calculations with significant figures and get step-by-step results. Ideal for precision in math and science!
Enter expression...
Calculation History
No calculations yet. Start by entering an expression above.
Rules for Significant Figures
Understanding how to count significant figures is essential for scientific calculations.
- 1 All non-zero digits are significant
- 2 Zeros between non-zero digits are significant
- 3 Leading zeros are never significant
- 4 Trailing zeros in a decimal number are significant
- 5 Trailing zeros without a decimal point may or may not be significant
Examples
See how significant figures work in practice with these examples.
Numbers with their significant figures:
123 → 3 sig figs
0.00123 → 3 sig figs
1.230 → 4 sig figs
1200 → 2-4 sig figs
1200. → 4 sig figs
0.00123 → 3 sig figs
1.230 → 4 sig figs
1200 → 2-4 sig figs
1200. → 4 sig figs
Operations results:
12.3 + 0.12 → 12.4
12.3 × 0.12 → 1.5
log(100) → 2.00
ln(2.718) → 1.000
12.3 × 0.12 → 1.5
log(100) → 2.00
ln(2.718) → 1.000
Share with others!
Facebook
Twitter
LinkedIn
Reddit
Pinterest
WhatsApp