toolmallow.
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Make it local

Choose defaults for supported calculators. You can mix a region, units and currency.

Changing units converts supported measurements. Changing currency relabels amounts; it does not exchange money. Tax rules, tariffs and broker rates remain your inputs.

Only these preferences are saved in this browser. Calculator inputs are not saved.
KEEP YOUR TOOLS CLOSE

A place on your home screen.

Open ToolMallow like an app, with a dedicated icon and a standalone view where your browser supports it.

If the button is unavailable, use the steps below. Installation options depend on your browser and private-preview access.

iPhone or iPad

  1. Open ToolMallow in Safari and sign in to the private preview if asked.
  2. Open Share and choose Add to Home Screen.
  3. Enable Open as Web App if that option is shown, then add it.

Android

  1. Open ToolMallow in a supported browser, such as Chrome.
  2. Use the install button above, or open the browser menu and choose Install app or Add to Home screen.
  3. Confirm the name and installation.

What to expect

A connection is required to load tools and current content. Offline, ToolMallow shows a reconnect screen. It does not promise offline calculations, cache private pages, or store your inputs. Installation behavior can differ across browsers, and private-preview sign-in may limit it.