Round to the Nearest Dime
Rounding to the nearest dime snaps a money amount to a multiple of ten cents — the value of the US dime coin. $47.38 becomes $47.40 because it sits closer to $47.40 than to $47.30. Estimators, fare charts and quick mental invoices use dime rounding because the result can be paid exactly with dimes and stated in one decimal place. All values on this page use standard half-up rounding.
Round to the Nearest Dime reference last updated · reference source
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Dated static reference; no live data is fetched. Verify current source values and assumptions before relying on results.
What this tool does
Rounding to the nearest dime snaps a money amount to a multiple of ten cents — the value of the US dime coin. $47.38 becomes $47.40 because it sits closer to $47.40 than to $47.30. Estimators, fare charts and quick mental invoices use dime rounding because the result can be paid exactly with dimes and stated in one decimal place. All values on this page use standard half-up rounding.
How to use the Round to the Nearest Dime
- Check Number to round: 47.38.
- Check Round to: nearest.
- Check Nearest multiple of: 0.1.
- Review the Round to the Nearest Dime result and its exact-value comparison table.
- Verify assumptions before applying the result.
Formula
Round half up at the chosen precision: decimal places count digits after the point, significant figures count digits that carry meaning from the first nonzero digit, and nearest-multiple rounding snaps to a grid such as the nearest 100.
- x
- Number to round
- mode
- Round to
- places
- Decimal places
- figs
- Significant figures
- multiple
- Nearest multiple of
Ties round half up (away from zero for the magnitude shown in most school contexts); financial rounding rules such as banker's rounding are not applied.
Worked example
Round to the Nearest Dime: Number to round = 47.38; Round to = nearest; Nearest multiple of = 0.1. Rounding to the nearest dime snaps a money amount to a multiple of ten cents — the value of the US dime coin. $47.38 becomes $47.40 because it sits closer to $47.40 than to $47.30. Estimators, fare charts and quick mental invoices use dime rounding because the result can be paid exactly with dimes and stated in one decimal place. All values on this page use standard half-up rounding.
Inputs
- Number to round47.38
- Round toNearest multiple
- Decimal places2
- Significant figures3
- Nearest multiple of0.1
Result
- Rounded value47.4
- Multiple used0.1
Round to the Nearest Dime — worked examples
| Number | Rounded |
|---|---|
| 47.32 | 47.300000000000004 |
| 47.35 | 47.400000000000006 |
| 47.38 | 47.400000000000006 |
| 12.04 | 12 |
| 12.05 | 12.100000000000001 |
| 99.95 | 100 |
| 3.33 | 3.3000000000000003 |
| 7.77 | 7.800000000000001 |
Results explained
- Rounded value
- Rounded value from the formula above. Ties round half up (away from zero for the magnitude shown in most school contexts); financial rounding rules such as banker's rounding are not applied.
- Decimal places
- Decimal places from the formula above. Ties round half up (away from zero for the magnitude shown in most school contexts); financial rounding rules such as banker's rounding are not applied.
Frequently asked questions
Rounding to the nearest dime snaps a money amount to a multiple of ten cents — the value of the US dime coin. The reference table on this page shows 8 worked examples computed with exactly that rule.
An amount exactly on the nickel, such as $47.35, is halfway between dimes; in exact decimal arithmetic half-up rounding sends it to $47.40, though binary storage holds 47.35 a hair below the tie, so calculators (this one included) may display $47.30 for that typed value.
Use it for rough quotes, cash fares and price points where cent-level precision is noise but a clean ten-cent step is still payable in coin.
12.04 rounds to 12. You can verify it in the table on this page, or type any other value into the calculator above.
The famous 9/10 on a fuel sign is a tenth of a cent (a 'mill'), a unit that dates to federal fuel taxes of the 1930s levied in fractions of a cent per gallon. You never pay a fraction of a cent: the pump multiplies by gallons and the final total is rounded to the nearest cent — dime and cent rounding like this page's finish the job.
No. Banker's rounding (round-half-to-even) is used in some scientific and financial standards to reduce bias over huge datasets, but this page — and the parent rounding calculator — always rounds a halfway value up, which is the convention taught in schools and used for tax forms.
Yes, with one nuance: the engine rounds halves toward positive infinity, so 47.5 rounds up to 48 at the nearest dollar while -47.5 becomes -47. Away from exact halves, negative values round to the nearest candidate just like positive ones.