Units: Converter & Formulas

Convert, look up, calculate

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Type one number and see every unit. Everyday calculators for pensions, mortgages and BMI, 100+ formulas with every symbol explained, and a calculator on the side. Units is a pocket tool for the numbers you keep looking up. Convert units and currency, run everyday calculations, check a formula or a constant, and do the sum on a calculator that stays out of the way. UNIT CONVERSION Pick a category and enter a number. Every unit in that category is converted at once, so you never have to choose what to convert to. • Seven categories: length, weight, temperature, volume, area, speed and currency. • Metric, imperial, US and traditional Chinese units: feet, pounds, Fahrenheit, gallons, jin, mu and more. • Look-alike units are listed separately, such as US and UK gallons, or tonnes and short tons. • Pin the units you use most, and tap any result to copy it. CURRENCY • 22 widely used currencies with rates updated daily. The last rates are kept for when you are offline, and the rate date is always shown. • Drag currencies into the order you want and hide the ones you don't need. • Rates are mid-market reference rates. Your bank or card rate will differ. CALCULATORS Fill in a few numbers and get the answer. Every field comes with a short note on what to enter. • Pensions: China urban employee pension, a stop-or-keep-contributing comparison, and Canada CPP + OAS + GIS. • Loans and savings: fixed-payment and fixed-principal loans, compound interest, annualized return. • Health and fitness: BMI, pace. • Spending and travel: discounts, unit price, tip and split, percent change, fuel cost, electricity cost. • Pension results can be shared as a clear one-page image, with age and income hidden. FORMULAS • More than 100 formulas across math, physics, chemistry, finance and economics, grouped by topic: triangles, electricity, solutions, interest and more. • Formulas are properly typeset, and the meaning of every symbol is listed underneath. • Search by name. Some formulas take your numbers directly. CONSTANTS 51 constants from math, physics, chemistry and astronomy, with units and a short note. Tap one to copy its value. CALCULATOR Pull up a half-height calculator from any screen and keep reading the formula above it. Brackets, percent, powers, roots, trig functions, logarithms, factorial and π, with the result shown as you type. ALSO • English and Simplified Chinese, switchable at any time in Settings. • No account, no personal data collected, no ads. Formulas and constants are provided for reference; check important calculations against an authoritative source. Pension and loan calculations are rough estimates based on published rules. They are not official figures and not financial or investment advice.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

• Pension results at a glance: a comparison table and bar charts you can share as one image, with age and income hidden. • Stop or keep contributing: monthly and total contributions for each option, the extra pension each month, and what the extra money would pay if invested at 5%, 8% or 10%. • New field for the local minimum contribution base, for more accurate contribution amounts. • Rule fixes, including the minimum contribution years when you delay retirement. • Smoother pickers, and long result names no longer get cut off.

Version 1.2

The developer, WiseInsur technology Inc., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Wiseinsur Technology Inc.
    Size
    5.8 MB
    Category
    Utilities
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Simplified Chinese
    Age Rating
    4+
    Copyright
    © 2026 Wiseinsur Technology Inc.
  • Developer Website
  • Privacy Policy

    • More by WiseInsur technology Inc.