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Math Rounding Calculator

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Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can perform numeric rounding to 1-decimal place (nearest 10th), 2-decimal places (nearest 100th), 3-decimal places (nearest 1000th), nearest one, nearest 10, nearest 100, nearest 1000, nearest ten thousand, nearest hundred thousand and nearest million of a given number.

Result window

iOS: Use this calculator offline with our all-in-one calculator app.

Round operation

Click here to see the steps involved in rounding integers or decimal numbers.

To round to a nearest multiple of any other numbers e.g., 5, 15, 25, 50, 500 and so on, use Round up/down calculator.

How to round numbers?

A) To round to nearest tenth, hundredth or thousandth:

  • if the rounding digit is 0, 1, 2, 3, or 4, simply drop all digits to the right of it.
  • if the rounding digit is 5, 6, 7, 8, or 9, add one to the rounding digit and drop all digits to the right of it.

Example 1. What is 80.945 rounded to the nearest tenth?
Ans. 80.9

Example 2. What is 18.386 rounded to the nearest hundredth?
Ans. 18.39

B) To round to nearest one, ten, hundred, thousand and so on:

  • if the rounding digit is 0, 1, 2, 3, or 4, change all digits to the right of it to zeroes.
  • if the rounding digit is 5, 6, 7, 8, or 9, add one to the rounding digit and change all digits to the right of it to zeroes.

Example 3. What is 871 rounded to the nearest ten?
Ans. 870

Example 4. What is 121,580 rounded to the nearest thousand?
Ans. 122,000

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