7 Tools 100% Client-Side

Math & Logic

Number base converters, math evaluators, and random number generators.

Popular in Math & Logic

Convert numbers between binary, octal, decimal, and hexadecimal bases.

Safely evaluate arithmetic expressions with +, -, *, /, %, ^, and parentheses.

Generate random integers or floats within a min/max range.

Calculate X% of Y, what percent X is of Y, and percent change.

Convert supported input into the target format locally without uploading data.

Convert supported input into the target format locally without uploading data.

Convert supported input into the target format locally without uploading data.

Convert numeral bases, evaluate expressions, and generate random numbers in your browser.

Binary, octal, decimal, and hex with large integers.

Safe arithmetic expressions without arbitrary JS eval.

Generate ranges and calculate percentages.

Privacy: Data pasted into these tools is processed locally in your browser and is not uploaded to any server.