All-in-One Tools Collection

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

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Extract phone numbers from mixed text with support for multiple countries and formats

Validate phone numbers from multiple countries including China, US, and more with detailed formatting and carrier info

Calculate calories burned while cycling

Calculate calories burned while walking

Calculate calories burned while running

Calculate Rate of Perceived Exertion for training intensity assessment

Calculate debt payoff plan using the snowball method (pay smallest balance first)

Calculate calories burned while swimming

Calculate bond current yield and yield to maturity (YTM)

Calculate profit/loss for stock call and put options

Generate test credit card numbers for development and testing purposes

Calculate Training Stress Score (TSS) for workout intensity and duration