Convertigo is a collection of free, focused online tools for developers, students, and everyday tasks. Most tools run entirely in your browser: your data never leaves your device.
Browser-based
Most tools process data locally.
No sign-up
Use any tool without an account.
Honest limits
Unavailable features are labeled, not faked.
Editorially selected. Not based on usage statistics.
Convert between data formats and generate SQL.
Work with PDF and office documents.
JSON, encoding, and Unicode helpers.
Dates, numbers, finance, and everyday math.
Work with PDF and office documents.
Convert between data formats and generate SQL.
JSON, encoding, and Unicode helpers.
Dates, numbers, finance, and everyday math.
Calculate age in years, months, and days.
Calculate percentages, percentage change, and percentage of a number.
Estimate take-home pay from salary components and deductions.
Add or subtract dates and calculate the difference between dates.
Calculate loan EMIs, total interest, and total repayment.
Calculate GST-inclusive and GST-exclusive amounts.
Estimate monthly in-hand salary from an annual CTC, with configurable components and deductions.
Count working days between two dates with configurable weekdays and holidays.
Convert units, energy, and temperature.
Count, transform, and analyse text.
Pick a tool
Browse by category or search. Every listed tool is functional.
Enter your data
Most tools process input locally in your browser.
Get your result
Copy, download, or apply the output. Nothing is stored on our servers.
PDF-to-Word, Word-to-PDF, and PDF-to-Excel require server-side document rendering or commercial conversion services. They are listed in the registry but marked unavailable on this deployment. They are not presented with fake upload controls. See the PDF to Word page for the full explanation.