Apps Like e: Spacetime Converter for iPhone and iPad
Convert length and time relativistically.
The app converts between length and time using geometrized units where the speed of light is unity. It allows users to think about the world differently by converting units like inches to seconds or miles to years.
by Elliptics, Ltd.★ 5.01 ratingsEducationFreeData updated 2026-09-10
Units between Fahrenheit and Celsius, miles per hour and kilometers per hour, miles and kilometers, feet and meters, square feet and square meters, pounds and kilograms, cups and deciliters, and fluid ounces to milliliters.
MyCalc offers basic and scientific calculation functions. Users can switch between portrait and landscape modes. It supports currency and unit conversions. Results, equations, and conversions can be copied, shared, or saved.
Calculate age in years, months, days, hours, minutes, and seconds by entering a birthdate. View remaining days until next . Break down total lived time into years, months, weeks, days, hours, minutes, and seconds. Save and organize information.
The app calculates the linear length of material on a roll. Users input thickness, roll diameter, and core diameter to see the linear length in US/Imperial or Metric units.
Provides a keypad for entering digits in apps that lack a . Users can input phone numbers, credit card details, and other numeric information efficiently. The functions as a standalone input method for numeric data entry.
Convert lengths between Feet, Inch, Meter, Decimeter, Centimeter, and Millimeter. Enter a value and select units to switch. Save frequently used conversions for quick access.
Calculate age in years, months, weeks, days, hours, minutes, and seconds. Track days left to next milestones. Receive notifications when milestones are reached. Display age with a widget.
Calculate briquettes needed for cooking based on temperature, size, and method. Adjust settings for precise heat distribution. View calculated numbers for top and bottom briquettes. Sync with recipe details for accurate cooking adjustments.
Calculate fabric size in centimeters or inches based on count and fabric type. Determine thread consumption for specified stitches. Input project details to estimate material needs. Export calculations for reference.
Displays speed and distance using GPS. Tracks maximum speed with vibration alerts. Shows position and time of maximum speed on a map. Switches between light and dark modes. Notifies of GPS measurement errors. Supports motorcycles, cars, and planes.
Convert units across 14 categories including length, weight, and temperature. Switch between metric, imperial, and Chinese traditional systems. Customize display formats and save frequently used conversions.
Allows users to perform calculations by without typing. It solves math problems using AI models like ChatGPT and Gemini. Users can ask for comparisons, bill splits, and percentage discounts. The converts units and time formats instantly.
Track speed in using units like meters per second, miles per hour, and kilometers per hour. Display speed in English or Spanish. Allow users to request additional language support.
Convert units across categories like length, area, and temperature. Perform simultaneous conversions and customize preferences. Copy converted values to the clipboard for quick use.
Calculate area by inputting width and length in feet, inches, or meters. Convert between imperial and metric units in real time. Determine quantity with gap size and waste percentage. Identify floor or wall based on dimensions.
Monitor trip data with live metrics like average speed, current speed, top speed, distance, direction, travel time, stationary time, and clock. Customize display style and speed units. Arrange metrics on screen.
Calculate reactions with built-in equations and thermodynamic data. Convert units for pressure, temperature, and concentration. Solve material and energy balance problems. Access property tables for gases and liquids.
Allows users to measure and calculate dimensions using feet, inches, and sixteenths. Input tape measure data directly for accurate conversions. Calculate angles and verify corners without manual calculations.