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.
Showing 21–40 of 1,000 ranked alternatives.
Armchair Engineering
Calculate staircase dimensions with precision
Calculate staircase dimensions with precise formulas. Input riser height and step depth to determine going, stringer, and base lengths. Choose units from mm, cm, or inches.
Anna Filobok
Calculate roof pitch and rafter length
Convert between imperial and metric units in real time. Calculate roof pitch, rafter length, and roof area using rise, run, or house area. Input measurements in meters, centimeters, or inches.
Kei Suefuji
Convert units between US and metric systems
Convert units of length, weight, area, liquid volume, and temperature between US and metric systems. Select the category, input the value, and instantly convert to the desired .
Anna Filobok
Calculate feet instantly
Calculate feet using length, width, and thickness in feet, inches, centimeters, meters, or yards. Input quantity for total feet. Convert between imperial and metric units in real time.
Robert Winkelman
Calculate for rectangles
Calculate footage by entering length and width for multiple rectangles. Support measurements in , inches, or both. Export calculations as CSV for further use.
Armchair Engineering
Calculate dimensions and material needs
Calculate decking material needs by inputting dimensions. Determine bearer and joist lengths. Adjust measurements in mm, cm, inches, or feet. Choose decimal precision for accurate results.
Scott DeSapio
Convert units of instantly
Convert between common measurements such as milliliters, liters, cups, pints, quarts, and gallons. Input a value and select units to switch between them. Save frequently used conversions for quick access.
Scott DeSapio
Convert units across 16 categories
Convert units across 16 categories with instant results. Switch between metric, imperial, and other systems. Calculate conversions for length, weight, temperature, and more. Store frequently used values for quick access.
Arulmurugan Prakasam
Convert units with a few taps
Convert units of length, area, and volume with instant results. Switch between meters, feet, kilometers, miles, square meters, acres, liters, and gallons. Tap to convert and view accurate measurements without ads or extra features.
Anna Filobok
Convert units, calculate area instantly
Calculate area by entering width and length in centimeters, meters, inches, feet, or . Convert between imperial and metric units in real time. Output results in centimeters, meters, feet, or .
Anna Filobok
Calculate area, convert units instantly
Calculate area using width and length in inches, feet, yards, meters, or centimeters. Convert results to inches, feet, meters, or centimeters instantly.
APPS BAY LIMITED
Convert instantly and accurately
Convert between currencies, weights, and measurements. Calculate feet and inches. Convert hours to minutes or seconds. Perform quick conversions for various .
Vladislav Kovalski
Length and height
Length and height using your phone's as a or . Detect surroundings with AR technology. Use the level tool for precise measurements. Place aiming mark on object for accurate readings.
Armchair Engineering
Measure spaces and convert units
Calculate floor area with customizable input and output units. Choose decimal precision. Add or remove rooms using "+" or swipe. Convert measurements between metric and imperial systems.
Anna Filobok
Calculate with pitch, width, and length
Calculate using house width, length, and pitch. Convert measurements between imperial and metric units in real time. Determine from width and length in meters, centimeters, yards, feet, or inches. Convert pitch to degrees or radians.
Yevhen Kniaziuk
Calculate volume and tonnage
Determines cubic yards and hot mix tonnage. Input length, width, and thickness in feet or meters. Choose units for imperial or metric. Calculate results with a single tap.
Tue Nguyen Minh
Calculate and with a measure display
Convert measurements between , , and centimeters. Input fractions or decimals for precise calculations. View results on a visual measure display. Perform addition, subtraction, multiplication, and division with measurement values.
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