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.
e: Spacetime Converter screenshots
Ranked alternatives
Showing 261–280 of 1,000 ranked alternatives.
Air Flow Conversion Calculator
Tan Chia Ling
Calculate airflow rate instantly
Calculate airflow displacement by inputting velocity or volume. Select duct type and dimensions with unit options. Instantly display results in preferred units including fl/min, m/s, and ft3/min.
Cuisenaire® Rods
Brainingcamp, LLC
Build and compare number
Explore mathematical concepts with colored representing numbers 1 to 10. Manipulate by adding, dragging, rotating, and removing them. Use snapping for alignment and optional grid for visual clarity.
Calculator + AR Ruler BLACK #1
DIGIID LLC
Measure and calculate with AR precision
AR measuring lets users tap two points on the camera screen to measure object lengths. Auto convert button changes units. performs basic math functions.
Unit Converter & Metric Tool
NIKLAS ETZLINGER
Convert units instantly and accurately
Convert units across categories like length, weight, temperature, and volume. Select units, input values, and receive instant results. Access a comprehensive list of measurement systems. Share results via email or copy to clipboard.
GeoGebra Geometry
GeoGebra GmbH
Construct geometric shapes and share results
Construct geometric shapes using points, lines, circles, polygons, and angles. Drag points to explore interactive . Measure lengths and areas. Transform shapes through mirroring, rotating, and dilating.
Ductulate HD
Steven Ramsay
Calculate air flow and duct sizes
Calculates air volume, pressure loss, velocity, and duct size for rectangular or round ducts. Supports both imperial and metric units. Users input values to determine required dimensions and system performance.
RaceTools
MirzaWorks LLC
Calculate ethanol goals and track fuel efficiency
Ethanol Calculator allows users to determine the mix of pump gas and ethanol gas needed for a desired blend by entering specific details. Users can review past calculations for quick recalculation.
Miter Angle Calculator
Ronnie Hurst
Calculate angles for cross braces and table
Calculate angles for cross braces and table x bracing. Input width, height, and board dimensions. Choose board orientation. Display angles for board ends and intersections. Support imperial and metric units. Provide board length requirements.
myConvert – Currency & Units
Lu A Oo
Convert units with one tap
Convert units across 77 categories with over 1000 options. Perform multiple conversions on one screen. Add custom units and categories. Use built-in calculator and numeric keyboard. Convert complex measurements like height and weight between systems.
Camera Measure - PartoMeter
VisTech.Projects LLC
Objects with your phone
Object dimensions using phone and reference objects like credit cards or DVDs. Snap photos for accurate in-plane measurements. Add custom reference objects with known sizes. Export measurement data for later review.
inch cm converter
SDG CODE DOO NIS
Convert inches to centimeters instantly
Convert inches to centimeters with precise calculations. Input measurements and receive instant conversions. Save frequently used values for quick access. Share results via copy or email.
How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.