PlayTools
Free online calculators, converters, and developer tools
PlayTools is a free collection of 68 calculators, converters, and lightweight utilities that run in your browser. Compare loans, convert currency and units, format JSON, generate passwords, and handle everyday text, image, SEO, and date tasks with no account and no install. Most tools run on your device, so the numbers and text you enter are not uploaded just to get a result.
Features
68 free tools for finance, dates, development, SEO, text, images, and utilities. No account and no install, with instant results in the browser. Loan, mortgage, salary, tax, tip, discount, ROI, and currency calculators. JSON, CSV, YAML, Base64, hashes, JWT, regex, cron, and URL tools. Privacy-first: most tools run locally on your device.
Use Cases
Estimate a loan, mortgage, or car payment before you commit. Format, validate, or convert JSON, CSV, and YAML while debugging. Convert time zones, dates, units, and currencies for work or travel. Generate passwords, UUIDs, QR codes, and meta tags without another signup.
Comments
PlayTools is a free set of calculators, converters, and developer utilities that run in the browser. No account, no install, and most tools stay on your device. I built it for the small jobs that should not need another signup: loan math, JSON formatting, units, currency, and everyday text and image tasks. Feedback on which tools to add next is welcome.
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Comments
PlayTools is a free set of calculators, converters, and developer utilities that run in the browser. No account, no install, and most tools stay on your device. I built it for the small jobs that should not need another signup: loan math, JSON formatting, units, currency, and everyday text and image tasks. Feedback on which tools to add next is welcome.
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