Enter a number and choose how to round it. You see the nearest value plus rounding up and down.
Last updated: · By Furkan Çetinkaya · About & Methodology
Rounded
—
Show the working
Rounding to the nearest uses the half-up rule: 2.5 becomes 3. Rounding up (ceiling) and down (floor) always move in one direction.
Significant figures count from the first non-zero digit: 0.004567 to 2 significant figures is 0.0046.
Choose 'Nearest 10ⁿ' with n = 3.
Computers store 1.005 as slightly less than 1.005; the calculator keeps that edge case rare by rounding with full precision.