Single‑file web tool

KRT Web — Mario Kart Wii RKGT Editor

Magic must be RKGT. Values are Big‑Endian. Each entry = 3×UInt16 (50cc, 100cc, 150/Mirror) + 2 bytes padding.

Header

Locked by spec (RKGT).
Unused by the game (hardcoded to 1000), but preserved.
Locked by spec (12 / 0x0C).
Read‑only; auto‑updated to match the table.

Inspector

Select a cell to see friendly time formatting, keyboard shortcuts, and validation.
  • Arrows / Enter / Tab to navigate.
  • Ctrl/⌘ + D duplicate row, Ctrl/⌘ + ⌫ delete row.
  • Switch “Display” to edit in mm:ss.mmm — we’ll convert to frames using FPS.
No selection

Entries

# Track (hint) 50cc 100cc 150/Mirror ≈ mm:ss.mmm (150)
Ready.
Notes. This tool reads & writes Big‑Endian KRT (RKGT) files used by Mario Kart Wii for GP rank timing. It preserves header fields and re‑writes padding as 0. Made by ChatGPT 5 Thinking.