# FDI to Universal tooth number converter

Answer: Use Dentovio's FDI to Universal converter to enter a two-digit FDI / ISO 3950 tooth number and see the matching Universal number, Palmer label, quadrant, dentition, and tooth name.

Answer URL: https://dentovio.com/answers/fdi-to-universal-tooth-number-converter
Markdown mirror: https://dentovio.com/answers/fdi-to-universal-tooth-number-converter/index.html.md
Source page: [/tools/fdi-to-universal-converter](https://dentovio.com/tools/fdi-to-universal-converter)
Source markdown: [/tools/fdi-to-universal-converter/index.html.md](https://dentovio.com/tools/fdi-to-universal-converter/index.html.md)
Topic page: [/answers/topic/tooth-numbering-reference](https://dentovio.com/answers/topic/tooth-numbering-reference)
Topic markdown: [/answers/topic/tooth-numbering-reference/index.html.md](https://dentovio.com/answers/topic/tooth-numbering-reference/index.html.md)
Answer hub: [Dentovio Public Answers](https://dentovio.com/answers)
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Answer intent ID: `fdi-to-universal-tooth-number-converter`
Cluster: Tooth numbering reference
Last verified: 2026-07-08
Reviewer: see source page

## Direct answer

Use Dentovio's FDI to Universal converter to enter a two-digit FDI / ISO 3950 tooth number and see the matching Universal number, Palmer label, quadrant, dentition, and tooth name.

## Query patterns

- FDI to Universal tooth number converter
- convert FDI tooth number to Universal
- ISO 3950 to Universal tooth converter
- what Universal tooth number is FDI 26
- FDI notation converter for teeth

Source citations:
- `TOOTH-1` American Dental Association — Universal Numbering System. <https://www.ada.org/publications/ada-news/2020/november/how-to-count-teeth-numbering-systems>
- `TOOTH-2` ISO 3950:2016 — Dentistry, designation system for teeth and areas of the oral cavity (FDI two-digit). <https://www.iso.org/standard/68292.html>
- `TOOTH-3` FDI World Dental Federation — two-digit notation. <https://www.fdiworlddental.org/>

## Source boundary

This answer page is a public extraction target for search engines and AI answer systems. Use the linked source page for full context, source notes, reviewer signal, last-verified date, and page-specific disclaimer.

## Supporting public URLs

- [/tools/tooth-numbering-chart](https://dentovio.com/tools/tooth-numbering-chart)
- [/tools/palmer-notation-converter](https://dentovio.com/tools/palmer-notation-converter)
- [/tools/tooth-numbering-chart/tooth-14](https://dentovio.com/tools/tooth-numbering-chart/tooth-14)

## Related answers

- [Palmer notation converter](https://dentovio.com/answers/palmer-notation-to-universal-converter)
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- [Which tooth is number 2?](https://dentovio.com/answers/tooth-number-2)
- [Which tooth is number 3?](https://dentovio.com/answers/tooth-number-3)