Daily DAX : Day 385 ISO.CEILING

ISO.CEILING DAX Function in Power BI

Function Syntax

ISO.CEILING(<number> [, <significance>])

Description

The ISO.CEILING function rounds a number up to the nearest multiple of a specified significance, following the ISO standard (same behavior as CEILING in most cases, but ensures consistency across locales).

Unlike CEILING.PRECISE, it allows a custom significance (step value), and always rounds up (away from zero for positive numbers).

Returns: A decimal number rounded up to the nearest multiple of significance.

Parameters

Parameter Description
<number> The numeric value you want to round up.
<significance> (optional) The multiple to which you want to round. Default is 1.

Examples

Example 1: Basic Rounding (Significance = 1)

ISO.CEILING(4.3) → 5
ISO.CEILING(-4.3) → -4
ISO.CEILING(5) → 5

Example 2: Custom Significance

ISO.CEILING(23, 5) → 25
ISO.CEILING(21, 5) → 25
ISO.CEILING(26, 10) → 30

Example 3: In a Measure (Sales Rounding to Nearest 100)

Rounded Sales = 
ISO.CEILING(SUM(Sales[Amount]), 100)

Result: If total sales = 1,234 → Returns 1,300

Use Cases

  • Financial Reporting: Round revenue up to the nearest thousand for conservative estimates.
  • Inventory Management: Round up order quantities to full cartons (e.g., packs of 12).
  • Pricing Rules: Apply minimum billing increments (e.g., bill in 15-minute intervals → significance = 0.25 hours).
  • Project Estimation: Round resource allocation up to nearest full unit.
Tip: Use ISO.CEILING instead of CEILING for consistent behavior across different language/regional settings in Power BI.


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