Calculate measurements in feet, inches, and meters
Calculate measurements using feet, inches, yards, meters, and regular numbers simultaneously. Input fractions by selecting a numerator and denominator. Convert between units and perform calculations for construction tasks.
A Scheme interpreter allows users to write and execute code. The console supports read-eval-print loops for interactive coding. The text editor includes syntax highlighting, smart indentation, and parenthesis matching.
Tune musical instruments by ear with note generation from A1 to C7 in four waveforms. Adjust A4 calibration between 415Hz and 466Hz. Choose sine, square, triangle, or sawtooth waveforms. Set output volume. Load tones instantly with precise emission.
Sudoku solver helps users complete Sudoku puzzles. It calculates minimum combinations for each cage sum and highlights duplicates in red. Users input cell counts and sums via an edit tool with auto-generated options to avoid invalid entries.
Calculate percentages, find the total, or determine the part. Input two values to automatically compute the third. View detailed step-by-step calculations. Share the complete solution with others.
Practice problems with quizzes on logical reasoning, mathematical reasoning, and everyday mathematics. Solve addition, subtraction, decimals, fractions, and geometry questions. Track progress with model tests and achievers section exercises.
TriangleCalc calculates triangle side lengths and angles by entering two values. Automatically computes remaining sides and angles. Displays results in clear numerical format. Supports basic trigonometric calculations for triangles.
Solve by selecting solution methods. Review steps and receive feedback. Access partial or complete solutions. Practice until correct method is chosen. Proceed to next problem immediately.
Convert units across 180+ categories including angles, areas, cooking units, weight, clothing, and shoes. Convert 180+ currencies and digital currencies like Bitcoin and Doge. Enter values and get instant conversion results.
Displays calculations in a scrollable format for easy review. Users can track calculation history, perform basic arithmetic, and use a scientific mode for advanced functions. Input and results are visible simultaneously for accuracy.
Measure light and color for accurate exposure settings. Use a zoomable spotmeter, RGB waveform monitor, and false-color preview. Attach Lenny Hat or Lumu™ Lite for incident readings with lux and foot-candle displays.
Calculate and side lengths of right angle triangles using sine, cosine, and tangent. Input known values to determine missing measurements. Explain calculation steps and rules for applying trigonometric ratios.