UniMars - Unit Converter

Everyday speed. Engineering precision.

UniMars brings everyday and specialist unit conversions together in one compact app, with 81 quantities across 13 categories and an interface in 23 languages.

Choose units manually, type a request such as “12 m to ft” into Search, or tap the microphone to speak your conversion. Supported, unambiguous voice requests convert immediately; ambiguous units offer a choice.

FREE FEATURES

• Everyday, engineering and scientific unit conversions.

• Fields of interest for cooking, engineering, electrical, medical, physics and hiking needs. Combine fields to show relevant quantities.

• Global search by unit name, symbol or alias, regardless of your selected fields.

• Voice input and optional spoken results.

• Cooking ingredient conversions between volume and mass, with ingredient selection and source notes.

• Pace, speed and gradient conversions.

• Balanced three-phase voltage conversions.

• Independent absolute and gauge pressure settings.

• Swap units and copy results.

• Automatic restoration of your last conversion.

• Light and dark appearance.

• An interface in 23 languages.

• Built-in Help and explanations of conversion definitions.

COOKING AND EVERYDAY MEASURES

Convert regional cups and spoons, grams, ounces, pounds and more. The Cooking Ingredients tool estimates volume-to-mass conversions for selected foods. Results depend on ingredient density, packing and preparation; use a kitchen scale when accuracy matters.

HIKING AND SPECIALIST QUANTITIES

Convert pace and speed, slope gradients, distance, elevation, temperature and other useful quantities. Specialist coverage includes electrical quantities, pressure, flow, viscosity, energy, radiation, light and mass concentration, including mg/dl.

PRECISION BY DESIGN

Conversion factors are derived from a controlled set of exact definitions rather than copied from independently rounded tables. Calculations use up to 34 significant decimal digits. Some definitions and nonlinear conversions require numerical approximations. Display formatting keeps results readable without changing the underlying calculation.

OPTIONAL PRO UPGRADE

One purchase unlocks:

• Calculator expressions.

• Favorites for saved conversion pairs.

• Conversion History.

• All Results, showing equivalent values in the available units for the selected quantity or cooking ingredient.

• Advanced number display settings.

• Copying the complete calculated number without display rounding.

No ads. No subscription. No app account required.

Core conversions work offline. Speech availability depends on your phone’s speech services and may require an internet connection. Voice recognition varies by language and provider; English number words are supported.

Designed for everyday use, study and technical calculations. Calculation precision does not increase the accuracy of a measured input.