15.5 Rounded to the Nearest Whole Number

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What is 15.5 rounded to the nearest whole number?

Answer

15.5 rounded to the nearest whole number is
16

Nearest whole number — no decimal places. The tenths digit decides: 5⁠–⁠9 round up, 0⁠–⁠4 keep; the decimals are dropped.

Exactly halfway between 15 and 16 — equally close to both. The halfway rule rounds away from zero, as in school and Excel ROUND: 16. Round half to even (banker's rounding) gives 16.

15.5

5 ones place 5 The tenths digit decides

15.5
15 16halfway → away from zero

midpoint 15.5

5 with only zeros after it → halfway, away from zero: 16

15.5 rounded to every place
PlaceRounded
to the nearest thousandth15.500
to the nearest hundredth15.50
to the nearest tenth15.5
to the nearest whole number16
to the nearest ten20
to the nearest hundred0

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Numbers rounded to the nearest whole number

NumberRounded
9.610
9.8710
10.110
10.511
11.512
1212
12.112
12.4812
12.48612
12.4912
12.513
13.514
14.515
1515
15.215
15.516
15.616
15.7416
16.216
16.316
16.416
16.4516
16.517
17.2617
17.417
17.518
19.520
20.120
22.523
23.26523

FAQ

What is 15.5 rounded to the nearest whole number?

15.5 rounded to the nearest whole number is 16

Is 15.5 closer to 15 or 16?

Equally close — 0.5 from each. The halfway rule rounds away from zero, to 16; round half to even (banker's rounding) gives 16.

Does rounding to the nearest whole number keep any decimals?

No: the answer is a whole number, the fraction is dropped after the tenths digit decides — 15.5 → 16.

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