Rounding Calculator
Round numbers up, down or to decimal places — all methods compared. Round numbers to any decimal place. Compare round-half-up, floor, ceiling and truncate side by side. Free online rounding calculator with examples.
À propos de Rounding Calculator
Rounding seems trivial until half-values: does 2.5 round to 2 or 3? It depends on the method. This calculator rounds any number to your chosen number of decimal places and shows four methods side by side — standard rounding (half up), always-down (floor/truncate) and always-up (ceiling) — so the difference is explicit. Ideal for financial rounding rules, school assignments and data formatting where the convention matters.
Comment utiliser Rounding Calculator
- Enter your number.
- Choose how many decimal places to keep.
- Compare the four rounding methods.
- Copy the one your task requires.
Fonctionnalités clés
- Round to 0–10 decimal places
- Half-up, floor, ceiling and truncate compared
- Handles negative numbers correctly
- Also rounds to whole tens, hundreds, thousands
What is the standard rounding rule?
Why do shops round with floor and ceiling?
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