Desktop & mobile app

ChronoConvert.

The modern & ancient unit converter — 160+ measures across 9 civilizations, 10 languages, offline-first, with a built-in map distance/area measurer.

Windows

Desktop installer

For 64-bit Windows 10 and Windows 11. Fully offline, multi-language, with the Map & Measure window.

Android

Installable Android package built with Capacitor. Same converter, touch-first.

One-time purchase. Lifetime use, no subscription.

Personal

$4.99

One-time payment · Windows or Android

Full Pack

$9.99

One-time payment · Windows + Android + HTML source

12 collections, 160+ measures: Length, Area, Mass, Volume, Temperature, Time, Speed, Digital, Force, Energy, Pressure & Ancient Coinage
Browse by civilization: Egypt, Rome, Greece, Mesopotamia, Levant, China, India, Persia & Norse
Two-way editable converter with instant unit swap and favorites
10 languages including right-to-left Arabic
Map & Measure: draw on OpenStreetMap to measure distance or area and send it straight to the converter
Offline-first — only map tiles need internet

Prefer to try first? Open the free browser version — no payment or account needed.