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
Calculate BMI using height and weight. Determine healthy weight range based on height. Choose height units from mm, cm, m, km, inches, feet. Select weight units from kg, lb. Set decimal places for precision.
Calculate material needs for patios using seven estimators: concrete slab, pavers, paver base, polymeric sand, sand & gravel, area, and volume. Input dimensions in inches, feet, yards, centimeters, or meters.
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.
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.
Calculate , , or with simple input fields. Switch between units like mph, km/h, and m/s. Save calculation history for quick reference. Share results via email or messaging.
Convert units for length, weight, volume, temperature,
Convert units for length, weight, width, volume, velocity, temperature, and pressure. Select the desired and perform conversions. Use tabs to switch between categories. Input values and receive converted results.
Calculate antenna lengths for dipoles, inverted vee, and vertical antennas in feet/inches or metric. Input frequency and select antenna type to get starting length. View 1/8, 1/4, 1/2, 5/8, and full wave options.
Calculates distances between map points and areas of non-overlapping polygons. Users can switch between metric and imperial units. Coordinates are displayed in decimal or degrees, minutes, and seconds.
Convert inches to millimeters with a simple interface. Enter measurements and receive instant conversions. Supports both imperial and metric units. Save frequently used conversions for quick access.
The app transforms a device into a construction calculator for feet, inches, and fractions. It performs calculations and conversions for various measurement units, including a triangle function for rise, run, diagonal, and pitch.
Perform calculations with a standard featuring extra-large buttons and functions like delete, x², √, and %. Use a scientific with 30 advanced functions. Convert units, calculate loans, and determine tips.
Quilting calculators help convert units between yards and inches, meters and centimeters. Determine fabric needed for backing, batting, and borders. Calculate rectangular pieces from larger fabric.
Area, lengths, and angles on maps using an interactive crosshair. Trace outlines to create connected points, updating area and perimeter in real time. Adjust radius for scaling features. View dynamic length and angle as you move the crosshair.
Explore word meanings, parts of speech, and related terms through interactive word trees. Manipulate entries with gestures to navigate definitions, examples, and etymology.