Free everyday calculators for dates, percentages, units, and image planning.
Fast utility calculators that run directly in your browser. No login, no upload, no input storage just quick answers and copyable results.
Age Calculator
Calculate exact age in years, months, and days with total days lived and next birthday countdown.
Open calculator →Date Difference Calculator
Find the number of days, weeks, months, and years between two dates locally in your browser.
Open calculator →D-Day Calculator
Count down to deadlines, launches, anniversaries, exams, and events with a clean D-Day result.
Open calculator →Percentage Calculator
Solve common percentage questions: percent of a number, percent ratio, and percentage change.
Open calculator →Discount Calculator
Calculate sale price, saved amount, tax, and final checkout total from discount rates.
Open calculator →Unit Converter
Convert length, weight, volume, area, and temperature units instantly without uploading any data.
Open calculator →Pixel to CM Calculator
Convert pixels to centimeters, millimeters, and inches using DPI/PPI for print and upload preparation.
Open calculator →DPI Calculator
Calculate print DPI from pixel dimensions and physical print size, with practical quality guidance.
Open calculator →Image Ratio Calculator
Simplify image ratios and resize width or height while keeping the same aspect ratio.
Open calculator →File Size Calculator
Estimate uncompressed image size and compressed output size for JPG, PNG, WebP, and upload planning.
Open calculator →High-intent utilities
Built around recurring searches: age, D-Day, percent, discount, units, DPI, pixel size, and upload planning.
Local by default
All values are calculated inside the current tab. Nothing is submitted to a server.
Connected to workflows
Image and file calculators can be linked naturally to Media Tools, Office Tools, and upload-prep workflows.
GPA Calculator
Weighted GPA and scale conversion for students.
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