# yConverter

> Tatami (帖) to m² & ft²

Canonical page: [https://chrome-stats.com/d/id6760248292](https://chrome-stats.com/d/id6760248292)

## Overview

- **ID:** `id6760248292`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Yohann SORONELLAS
- **Category:** Utilities
- **Version:** 1.2.0
- **Last updated:** 2026-07-06
- **First published:** 2026-03-12
- **Size:** 11 MB
- **Data as of:** 2026-09-22
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/yconverter/id6760248292)
- **Website:** [https://github.com/YohannSoronellas/yConverter](https://github.com/YohannSoronellas/yConverter)
- **Privacy policy:** [https://github.com/YohannSoronellas/yConverter/blob/main/PRIVACY\_POLICY.md](https://github.com/YohannSoronellas/yConverter/blob/main/PRIVACY_POLICY.md)

## Description

Convert Japanese tatami (帖) across 9 regional standards — Kyo-ma, Edo-ma, Danchi & more — to m² and ft² with mathematically exact constants.

Japanese rooms are measured in tatami mats (帖) — but not all tatami are the same size. yConverter converts between 9 regional standards with unrounded Shakkan-hō constants, so architects, real estate buyers, and Japan enthusiasts get exact results.

Features:
• Available in 5 languages — English, French, Japanese, Danish, Malay
• 9 regional standards:
  – Kyo-ma (京間)
  – Chukyo-ma (中京間)
  – Edo-ma (江戸間)
  – Rokuichi-ma (六一間)
  – Ryūkyū-tatami (琉球畳, 3 variants)
  – Danchi-ma (団地間, 2 variants)
• Mathematically exact conversions using unrounded Shakkan-hō constants
• Formula input — type expressions like (1+2)/3 directly into any field
• Bidirectional real-time conversion — update any field and all others recalculate instantly
• Live formula preview while typing
• Educational guide explaining the math behind each regional standard — selectable and copyable
• Dark Mode support

Localization is AI-assisted; we'd love your feedback to improve it.

## Rankings

- #2,178,051 — Overall

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Source: [Chrome-Stats](https://chrome-stats.com/d/id6760248292)