Rounding Calculator
Round any number to a specified decimal place, significant figures, or standard increments.
Frequently Asked Questions
What is rounding to significant figures?
Significant figures count meaningful digits starting from the first non-zero digit. 0.003456 rounded to 3 sig figs = 0.00346. 12,560 to 3 sig figs = 12,600. Used in science and engineering to express precision.
What is banker’s rounding?
Banker’s rounding (half to even) rounds 0.5 to the nearest even number: 2.5 → 2, 3.5 → 4. Standard rounding always rounds 0.5 up. Banker’s rounding reduces cumulative bias in financial calculations.
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