Date Calculator
Calculate days between two dates or add days to find future and past dates.
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Tool category
Math, Units, and Dates
Expressions, fractions, unit conversion, paper sizes, date differences, countdowns, and business days.
8 tools in this category
Math, Units, and Dates tools
Text Calculator
Calculate line-by-line arithmetic expressions with operators and parentheses.
Fraction Calculator
Add, subtract, multiply, and divide fractions with automatic simplification.
Unit Converter
Convert length, weight, volume, and temperature units.
Chinese Zodiac Lookup
Look up the zodiac animal, heavenly stem, earthly branch, and nearby cycle years.
Paper Sizes
Look up A/B/C paper sizes, pixel references, and common uses.
Date Countdown
Count days, hours, minutes, and seconds until a target date.
Business Days Calculator
Count working days between dates or add business days with custom weekends and public holidays.
Related categories
Generators and Creation
Letters, headlines, dummy copy, random strings, IDs, and QR codes.
Text Utilities
Dedupe, replace, case conversion, Chinese conversion, masking, regex extraction, and line operations.
Encoding and Data Conversion
Base64, HTML entities, Markdown/HTML, CSV/JSON, tables, and file encoding conversion.
Documents and PDF
Merge, split, convert, render, edit metadata, and watermark PDF files locally.
Math, Units, and Dates FAQ
Do these tools run locally?
Most RustPoint tools process input in the browser. Tools that need network access, such as DNS or WebSocket checks, only make requests after the user starts the check.
Does RustPoint store my input?
The local tools are designed to avoid server-side storage. Account favorites store only tool IDs for signed-in users.
How should I choose a tool in this category?
Start from the task you need to finish, then compare the short descriptions and tags. The catalog search can narrow tools by name, tag, and category.