Intl.NumberFormat v3 API is a new TC39 ECMA402 stage 3 proposal extend the pre-existing Intl.NumberFormat, with the following new features: 1. Add 3 new functions to format range of number: formatRange / formatRangeToParts / selectRange 2. Grouping Enum 3. New Rounding/Precision Options 4. Rounding Priority 5. Interpret Strings as Decimals 6. Rounding Modes 7. Sign Display Negative


Specification link

Final published standard: Recommendation, Living Standard, Candidate Recommendation, or similar final form

Status in Chromium


No active development

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
  • No signal
  • No signals



TC39 Stage 3 since July 2021

Last updated on 2021-12-01