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
Converts Width, Length, and Depth between imperial and metric units in real time. Calculates Area, Volume, and Weight based on provided dimensions. Allows custom Density input for accurate Weight calculations.
Measure lengths in centimeters or inches by placing the iPhone beside an object and moving it while touching the screen. Use a long scroll ruler up to 120 cm or a stick ruler with two sliders for small items.
Calculate area, perimeter, and square-up using length, width, and height. Convert measurements between yards, feet, inches, fractions, and decimals. Perform unit conversions for math tasks.
Convert units across categories like length, weight, and temperature. Enter a value and select units for conversion. Perform calculations using converted values. Sync results with other devices.
Calculate needed for flower beds, shrubbery, or other landscaped areas. Input dimensions in inches, feet, yards, centimeters, or meters. Output includes cubic yards, cubic feet, cubic meters, liters, and bag counts.
Convert units across 40+ categories with a single click. Switch between metric and imperial systems. Input values and select units for instant . Share results or copy to clipboard.
Convert physical objects into measurements using a function. Adjust two red lines to measure distances in centimeters or inches. Display measurements instantly on the screen.
A and unit/currency with a clean interface. Convert between 500+ units across 29 categories and 161 currencies. Customize colors and display selected units. Enter values to instantly convert between units.
Calculate based on set tour lengths and actual worked times. Input normal tour duration once, then enter worked tour for calculation. Supports RDO, PreTour, and wrap-around . Set rates and compute compensation in cash or time.
Convert across 20 categories including length, weight, temperature, and more. Perform real-time conversions with 8-decimal precision. Switch between metric and imperial systems. Use scientific notation and dark mode.
Measure objects using touch as or tape measure. Split objects into equal parts and calculate width/height ratios. Estimate diameter, angles, and divide circular objects. Switch between millimeters and inches for units.
Convert units across categories like length, weight, temperature, and volume. Switch between 100+ built-in units. Add custom units. Convert between imperial and metric systems. Save frequently used conversions. Share results via copy or email.
Convert units between U.S. standard and metric systems. Calculate length, weight, volume, and temperature. Switch between imperial and metric measurements. Store frequently used conversions.
Calculate measurements, convert units, and estimate material quantities. Perform trigonometry, slope calculations, and area computations. Save frequently used formulas and access them quickly. Export results and share via email or messaging.
Convert units across length, area, volume, angle, mass, pressure, and more. Check real-time currency exchange rates. Recalculate instantly with updated values. Save frequently used conversions for quick access.
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.
Perform basic and advanced calculations including addition, subtraction, multiplication, division, and exponents. Convert units between degrees, radians, and grads. Switch between standard and scientific modes.