Numeric blocks let you control how values are displayed: as a plain number, a currency amount, or a percentage, with optional rounding. This article explains the format options and one important gotcha about how percentages are stored.
The format controls appear in the Value (or Options) group of Input Field, Slider, Toggle, Selection, Dropdown, and most result blocks.
The format dropdown
Number Format offers three choices:
- Number — a plain number with thousands separators, for example
1,250. - Currency — a localized currency amount, for example
$1,250. - Percentage — a number followed by a percent sign, for example
50%.
Currency selection
When you choose Currency, a second Currency dropdown appears. Pick from the list of common ISO currency codes (USD, EUR, GBP, JPY, and many more). The display uses the currency's localized symbol, so a value formatted as EUR shows with € and JPY with ¥.
Currency values default to 0 decimal places for whole numbers and 2 for amounts with a fractional part, unless you set rounding explicitly.
Rounding (decimal places)
Where a result block offers Rounding Numbers, you can choose how many decimal places to display:
- None — show the value as-is, with no forced rounding.
- Ones — 0 decimal places.
- Tenths — 1 decimal place.
- Hundredths — 2 decimal places.
- Thousandths — 3 decimal places.
- Ten Thousandths — 4 decimal places.
For Currency format, only Ones and Hundredths are selectable; the other options are disabled because currencies round to whole units or cents.
Rounding only changes the displayed value, not the underlying number used in formulas.
Percentages are stored as decimals
This is the key thing to know about the Percentage format: a percentage is stored in the spreadsheet as its decimal equivalent. A field showing 50% feeds 0.5 into the formula engine, and 100% feeds 1.
That means:
- When you type a default value of
50into a percentage field, Numio saves it as0.5. - When you write formulas against a percentage input cell, use the decimal form (multiply by the base, don't divide by 100 yourself).
Sliders behave the same way: a percentage slider's min, max, and live value are converted between the percent display (0–100) and the decimal value (0–1) automatically.