TinyCelsius: Celsius + Fahrenheit Weather

TinyCelsius shows the weather in Celsius and Fahrenheit, side by side, so nobody has to convert in their head. It lives in the Mac menu bar by the clock, on iPhone and iPad, and in widgets on all three.

Price
Free
Works on
Mac, iPhone and iPad
Requires
macOS 26, iOS 26 or iPadOS 26, or later

On your Mac

Celsius and Fahrenheit, right by the clock.

Convert a temperature, switch between your places, and add desktop widgets that show both units.

  • The menu bar panel shows today’s high, low and feels-like
  • Type a temperature in the panel to convert it
  • Desktop and Notification Center widgets, small and medium
  • Open at Login keeps it in your menu bar after a restart
A TinyCelsius desktop widget in the Sky style: London, partly cloudy, 12°C and 54°FA TinyCelsius desktop widget in the Dual Tiles style: New York, sunny, 24° Celsius and 75° Fahrenheit, high 27°C 81°F, low 19°C 66°F

On iPhone and iPad

The same two numbers, in your pocket.

  • TinyCelsius on iPhone showing New York at 24°C and 75°F, sunny, with the hourly and five-day forecast in both units

    Both units, at a glance

    Celsius and Fahrenheit side by side, with today’s high, low and forecast.

  • An iPhone Home Screen with three TinyCelsius widgets for New York in the Dual Tiles, Clean and Sky styles

    Widgets in three styles

    Clean, Sky or Dual Tiles, with both units in every size.

  • The Convert tab in TinyCelsius: 20°C equals 68°F on a draggable thermometer, with quick references like water freezes and room temperature

    Drag or type

    Drag the thermometer, or tap a reading and type a temperature.

  • TinyCelsius at night in dark mode: New York, clear, 18°C and 64°F on a deep blue card

    Tinted by the sky

    The weather card follows the weather and the time of day.

  • TinyCelsius settings listing the current location, London and Seattle as places, with display and widget options

    All your places

    Where you are and the cities you care about, each with its own widget.

Features

What TinyCelsius does.

  • Both units, at a glance

    Wherever TinyCelsius shows a temperature, Celsius and Fahrenheit are both there. Choose which one comes first.

  • In the Mac menu bar

    The current reading sits by the clock. Open the panel for today’s high, low and feels-like, in both units.

  • Convert a temperature

    Type a temperature in the menu bar panel and read it in the other unit. On iPhone, drag the thermometer or tap a reading to type.

  • Widgets in three styles

    Clean, Sky or Dual Tiles: on the iPhone Home Screen and Lock Screen, and on the Mac desktop and in Notification Center.

  • All your places

    Keep up to five places, where you are and the cities you care about. Every widget can show a place of its own.

  • Today and what’s next

    On iPhone and iPad, a forecast under the reading covers the next hours and the next five days.

  • Apple Weather

    Conditions come from Apple Weather through WeatherKit, for your current location or a city you choose.

  • Nothing to sign up for

    No account, no ads and no third-party analytics. Your places and settings stay on your device.

Pricing

Free. All of it.

TinyCelsius

Free

One download for Mac, iPhone and iPad

  • Menu bar weather on Mac
  • iPhone and iPad app with forecast
  • Widgets on every platform
  • Temperature converter
  • Up to five places

Questions

About TinyCelsius.

Stuck, or missing something? The FAQ covers the usual menu bar puzzles, and we read every message.

Is TinyCelsius free?

Yes. TinyCelsius is free, with no in-app purchases, no ads and no account.

Does TinyCelsius need my current location?

No. You can allow current-location access for automatic local weather, or choose a city instead.

TinyCelsius uses Apple Weather through WeatherKit. Dion Software does not receive or store your location.

How do I add a TinyCelsius widget?

On iPhone and iPad, add it from the widget gallery like any other widget. On Mac, right-click the desktop and choose Edit Widgets.

To pick the place and style a widget shows, touch and hold it (on Mac, right-click it) and choose Edit Widget.

Which devices does TinyCelsius run on?

Mac with macOS 26 or later, and iPhone and iPad with iOS 26 or iPadOS 26 or later.