All-in-One Tools Collection

A broad collection of online tools for development, AI, design, and productivity tasks.

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Calculate waist to height ratio for health assessment

Perform basic arithmetic calculations with support for multiple operations

Calculate daily water intake needs based on weight, activity, and climate

Encode and decode HTML entities

Calculate loan payments, interest, and amortization schedule for various loan types

Encode and decode text using ROT13 substitution cipher (rotates letters by 13 positions)

Encode and decode text to/from Base45 format (RFC 9285)

Estimate VO2 Max based on activity type and performance data

Calculate pregnancy due date based on last period or conception date

Calculate optimal macro nutrient distribution based on goals and calories

Shuffle a standard deck of playing cards

Encode and decode data to/from Base64 format with URL-safe options