NAB TOOLS DIRECTORY

All online tools

Find practical utilities for text, code, conversions, calculations, networking, and game development.

8 tools

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Calculate percentages, percentage change, and percentage points.

Calculate exact age in years, months, days, and total days lived.

Split bills and calculate tips per person in seconds.

Calculate days, weeks, and years between two dates — plus date arithmetic.

Calculate your Body Mass Index and healthy weight range.

Estimate monthly mortgage payments, total cost, and interest.

Convert chmod octal values into readable owner, group, and public permissions.

Calculate percentages: X% of Y, X is what % of Y, and percentage change.