Tools
Process images, PDFs and tables. Files stay in your browser.
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4 results
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Big number calculator
Add, subtract, multiply and divide integers of any size in binary, octal, decimal or hex, compute a^b mod n, and divide repeatedly until the quotient is 0.
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Calculator
Standard, scientific and programmer calculator: exact decimal arithmetic, trigonometry in degrees or radians, and hexadecimal, octal and binary with bitwise operations.
Local first
chmod calculator
Convert Unix file permissions between checkboxes, octal numbers such as 755 and symbols such as rwxr-xr-x, including setuid, setgid and sticky bits.
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Screen PPI calculator
Work out pixels per inch, dot pitch and aspect ratio from a screen’s resolution and diagonal size.