Unit converter: 12 categories — length, mass, temperature, fuel (Android offline)

Unit converter: 12 categories — length, mass, temperature, fuel (Android offline)

EVERY UNIT CONVERSION IN ONE OFFLINE APP

12 categories, 92 units: length, mass, area, volume, time, speed, temperature, data, pressure, energy, power, fuel consumption. Type a number — conversions to ALL units of the category appear as a table, your pair highlighted. Russian units (pood, carat, sotka) included.

WHAT´S INSIDE (a single index.html file):
• Exact factors: mile = 1609.344 m, pound = 453.59237 g, atm = 760 mmHg
• Temperature by formulas, not multipliers (°C/°F/K; the −40° crossover works)
• Fuel economy — inverse relation: 10 L/100km = 23.5 mpg (US)
• «All units» table + one-tap copy of any value
• Swap button flips units; category, units and theme persist
• RU number format: space grouping, decimal comma (period accepted too)
• Dark and light themes; fully offline, no network, no permissions

FOR WHOM:
• Kitchen and recipes (cups, ounces, grams), DIY (inches, mm, psi), cars (mpg, L/100km, hp)
• Study and work: data (GB/MB), energy (kWh, kcal, BTU), pressure
• Shopping abroad: sizes, real-estate areas (sotka ↔ acres)

VERIFIED BEFORE SALE:
• 36 selftests: exact factors, temperature formulas (−40 °C = −40 °F), inverse fuel, roundtrip of all 92 units across all categories, RU number format
• Live browser test: 12 categories, marathon 42.195 km = 26.2188 mi, 100 °C = 212 °F, 1 GB = 1024 MB
• Screenshots are from the real working app

Guarantee: replacement or refund. The file is delivered automatically right after payment.