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Solar Lunar Converter
Date & Time ToolsConvert dates between solar (Gregorian) and lunar calendars with Can Chi, zodiac, solar terms, and holiday details.
Days Between Dates
Date & Time ToolsCalculate the exact number of days, weeks, and months between any two dates with business day counting and calendar visu...
Online Ruler
Math ToolsMeasure objects on your screen in centimeters or inches with precise calibration. Place your item against the ruler and...
Network Status
Network ToolsCheck your internet connection status and quality. Monitor network health with real-time diagnostics including ping, jit...
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Test your laptop touchpad functionality - detect taps, gestures, multi-touch, and pointer tracking i...
Test your keyboard for broken keys, ghosting, and rollover issues. Supports Full (100%), TKL (80%),...
Perform quick calculations with standard and scientific modes. Supports keyboard input, calculation...
Test your monitor's refresh rate with visual animations. Compare 30Hz, 60Hz, 120Hz side by side and...
Count characters, words, sentences, and paragraphs instantly. Check text against platform limits for...
Test, calibrate, and fix your display with 12 professional tools: Dead Pixels, Master Pattern, SMPTE...
Test mouse buttons, scroll wheel, click speed (CPS), and drag functionality. Visual feedback shows i...
Test your touchscreen for dead zones, multi-touch support, and responsiveness. Draw mode for accurac...
Latest Tools
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Convert between standard numbers and scientific notation instantly. Supports large and small numbers...
Convert numbers between Binary, Octal, Decimal, and Hexadecimal. Essential tool for programmers, stu...
Convert any number to words instantly. Supports 52 languages, decimals, negative numbers, and curren...
Convert between Roman numerals and Arabic numbers instantly. Supports single conversion, batch proce...
Discover random countries and cities around the world. Get geographic details, view on map, and lear...
Generate random dates, times, or both within a specified range. Perfect for scheduling, testing, or...
Can't decide what to eat? Let this random food picker choose for you! Pick from cuisines worldwide o...
Calculate percentages instantly with 5 different modes: find X% of Y, what percent X is of Y, increa...
Add, subtract, multiply, and divide fractions with automatic simplification. Supports mixed numbers...
Calculate with extremely large numbers beyond normal limits. Supports addition, subtraction, multipl...
Randomly divide participants into teams, create pairs, assign roles, or generate seating arrangement...
Generate random lottery numbers for Powerball, Mega Millions, EuroMillions, VietLott, and 50+ lotter...