Häufig gestellte Fragen
Why do rounding, ceiling, and floor give different results?
Rounding uses the standard 5-and-above rule, while ceiling always rounds up and floor always rounds down regardless of the digit. For example, 3.14 rounds and floors to 3, but ceilings to 4.
How does this work with negative numbers?
Ceiling and floor can feel reversed with negatives. For example, ceiling -3.14 gives -3, while flooring it gives -4. Truncation simply removes the decimal, so truncating -3.99 gives -3.
What is the difference between truncation and rounding?
Truncation discards digits below the specified place without applying rounding rules. Truncating 3.99 gives 3, whereas rounding 3.99 gives 4, so the results can differ.
How many decimal places can I choose?
You can select anywhere from 0 (whole number) to 10 decimal places, making this useful for everything from simple currency amounts to precise scientific or engineering figures.
Why does choosing the wrong rounding method matter in finance?
Interest, exchange rate, and tax calculations can accumulate significant differences over many transactions if the wrong rounding method is used, so it's important to match the method required by the applicable rules.