Showing 81–100 of 1,000 ranked alternatives.
Satish Boggarapu
Convert numbers between , , Hexadecimal,
Convert numbers between , , hexadecimal, and octal formats. Input a value and select the target format for conversion. Display results clearly with error handling for invalid entries.
FJEDI LTDA
Test APIs and view responses
Allows users to test various APIs including REST, GraphQL, WebSocket, and more. Send HTTP requests with methods like GET, POST, and DELETE. Edit GraphQL queries, mutations, and subscriptions. Connect to WebSockets and send messages.
晖明 甘
Calculate, edit, and track expressions
Advanced calculator with basic, scientific, and editable input features. View calculation history and use a widget for quick access.
Vitalij Schaefer
Images and set pixel dimensions
Multiple images simultaneously with customizable pixel dimensions. Choose from four modes including fixed width, fixed height, maximum pixel, aspect fill, or aspect fit. Export resized images in selected formats.
Joe Fratianni
Add, subtract, multiply, divide
Add, subtract, multiply, and divide numbers up to five decimal places. Maintain a running total and view a scrollable . Copy or paste numbers by touching and holding the display area.
Erik Minass
Dial numbers with physical buttons
Dial numbers using physical buttons and sound effects. Set volume for sound effects and enable touch tone for faster dialing. Make calls without a touchscreen. Memorize numbers by heart. Pause to think before dialing. Relive vintage phone experience.
Willy Kunz
Calculate with scientific precision and enhanced functions
Simulate the HP-45 scientific calculator with photo-realistic visuals and original LED or LCD display. Print calculations, animate keys with sound and feedback, and replicate the calculator's computation times.
Perfectly Simple Apps LLC
Look up screw specs and dimensions
Access screw and bolt specifications with detailed dimensions and material grades. View US screws including 93 sizes and 74 material options. Purchase metric screws for 210 sizes and 86 material grades.
Kevin Randrup
Calculate grades and predict outcomes
Calculate final grades by inputting current scores and weight. Determine required score for a target grade. Adjust value and view calculated results instantly. Support for Retina displays and 64-bit devices.
James Preston
Calculate in any number base
An RPN calculator with stack display and base conversion. Users can switch between binary, octal, decimal, and hexadecimal modes. Each stack element can be viewed in any base or as ASCII.
Vitalii Gryniuk
Convert colors between HEX, RGB, RGBA,
Convert colors between HEX, RGB, RGBA, CMYK, Lab, and HSB formats. Use the picker to select and copy codes. Adjust values manually or through preset swatches. Export codes for use in design projects or coding.
Jindrich Houska
Calculate and solve complex equations
With symbolic algebra, equation solving, and calculus functions. Supports fractions, repeating decimals, and high-precision numbers. Displays results as simplified expressions or numerical values.
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