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Math Calculators

Truncate Decimal Calculator

Verified formula Updated Jun 2026 Private — runs on your device

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Verified formula Private

Truncated value

3.7000000000

For general information only — not financial, tax, legal or medical advice. Verify before you rely on it.

How to use the Truncate Decimal Calculator

The Truncate Decimal Calculator works out your truncated value in an instant. Enter number (positive) and decimal places to keep and the result updates as you type — it is free, needs no sign-up, and runs entirely in your browser so your figures stay private.

  1. Enter the number (positive).
  2. Enter the decimal places to keep.
  3. Read off your truncated value — the calculator updates automatically, with no button to press.

Worked example

For example, with number (positive) of 3.789 and decimal places to keep of 1, the truncated value is 3.7000000000.

Inputs used
Number (positive) 3.789
Decimal places to keep 1
Results
Truncated value 3.7000000000

Results are estimates for educational use, not professional advice.

Frequently asked questions

It simply drops the digits beyond the chosen place without rounding. 3.789 truncated to 1 place is 3.7.

Rounding can go up; truncating always cuts off, so it never increases the last kept digit.

This version is for non-negative numbers. Truncation of negatives needs a different rule toward zero.

When you must not overstate a value, such as displaying available balance or conservative estimates.

Enter the number (positive). Enter the decimal places to keep. Read off your truncated value — the calculator updates automatically, with no button to press.

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