Convert Data, Calculate Finances & Boost Productivity — All in One Place
DataFrog is your all‑in‑one platform for data conversion, financial calculations, and developer utilities. Transform files, crunch numbers, and streamline your workflow — entirely in your browser with 100% privacy.
📊 Data Converters
Convert between 50+ data formats instantly. Whether you're working with API responses, bank statements, or spreadsheets — we've got you covered.
- ✅ Excel → JSON, CSV, XML, SQL, PDF, QIF, QBO, QFX, MT940
- ✅ CSV → Excel, JSON, XML, SQL, QIF, QBO, QFX, MT940
- ✅ JSON → Excel, CSV, XML, SQL, YAML, PDF, JSON Schema
- ✅ MT940 / QIF / QBO / QFX → Excel, CSV, and more
- ✅ XML, SQL, YAML, PDF → JSON, Excel, CSV, and more
🔧 Developer Utilities
Essential tools for developers, data analysts, and power users. Save hours with our free client‑side utilities.
- ✅ Code Generators — JSON to Dart, TypeScript, Java, C#, Go
- ✅ Formatters — JSON, XML, HTML, SQL beautifiers & minifiers
- ✅ ID Generation — UUID v4, v7, NanoID, ULID generator
- ✅ Encoding & Hashing — Base64, JWT decoder, SHA/MD5 hash generator
- ✅ Data Tools — Epoch converter, case converter, word counter, URL decoder
- ✅ Query Tools — Query CSV, Query Excel, SQLite Viewer
- ✅ Data Cleanup — Remove duplicates from CSV, Excel, and SQL
🧮 Financial Calculators
Make informed financial decisions with our suite of banking, loan, and insurance calculators.
- ✅ Loan Calculators — EMI, interest, amortization schedules
- ✅ Investment Calculators — compound interest, SIP, mutual funds
- ✅ Insurance Calculators — premium, coverage, policy comparison
- ✅ Banking Tools — currency converter, FD calculator, RD calculator
- ✅ Business Finance — profit margin, GST calculator, markup calculator
- ✅ Real Estate — home loan EMI, property tax, rent vs buy
📝 Blog & Learning Center
Stay updated with expert guides, tutorials, and best practices for data conversion, financial planning, and developer productivity.
- ✅ Data Conversion Guides — JSON to CSV, Excel to JSON, XML to XSD
- ✅ Developer Tutorials — UUID generation, JWT decoding, Base64 encoding
- ✅ Financial Planning — EMI calculation, compound interest, insurance basics
- ✅ Productivity Tips — workflow automation, data cleaning, analysis
- ✅ Industry Insights — fintech, data engineering, software development
Why DataFrog? The Ultimate Toolkit for Data, Finance & Development
DataFrog is a free, private, and offline‑first platform that brings together three essential tool categories: data conversion, financial calculations, and developer utilities. Whether you're a developer, data analyst, accountant, business owner, or student – you'll find the tools you need, all running locally in your browser with zero data sharing.
Comprehensive Data Conversion — 50+ Formats Supported
Our data converters support a vast range of formats including JSON, Excel (XLSX/XLS), CSV, XML, SQL, PDF, YAML, and financial standards like MT940, QIF, QBO, and QFX. Transform API responses, bank statements, spreadsheets, and database exports without uploading a single file. Your data stays on your device – guaranteed 100% private and secure.
Whether you need to convert Excel to JSON for an API integration, turn JSON to CSV for analysis, transform MT940 to Excel for financial reporting, or convert QIF to QBO for QuickBooks — DataFrog handles it instantly. Our converters preserve nested structures, handle large files, and produce clean, usable output every time.
Financial Calculators for Banking, Insurance & Personal Finance
Our financial calculators are designed for banking professionals, insurance agents, and anyone managing personal or business finances. Calculate loan EMIs, compound interest, insurance premiums, mutual fund returns, GST, profit margins, and much more. Get accurate results in seconds, with no sign‑up or data sharing required.
The calculators are built for real‑world financial scenarios — whether you're planning a home loan, evaluating an investment, or comparing insurance policies. All calculations are transparent, with clear formulas and breakdowns to help you understand the numbers.
Developer Utilities to Supercharge Your Workflow
Our developer utilities are essential for modern software development. Generate UUIDs (v4, v7, NanoID, ULID), encode and decode Base64, inspect JWT tokens, generate SHA/MD5 hashes, convert epoch timestamps, decode URLs, and change text case (camelCase, PascalCase, snake_case, kebab-case, and more).
Our code generators are particularly powerful — convert JSON to Dart (Flutter models), TypeScript interfaces, Java POJOs, C# classes, and Go structs. Format and beautify JSON, XML, HTML, and SQL code. Query CSV and Excel files using SQL‑like syntax, and view SQLite databases directly in your browser. All tools are client‑side, so you can even use them offline after the first visit.
Why Professionals Choose DataFrog
- 100% Privacy Guaranteed — No file uploads, no server processing, no data collection. Everything runs in your browser.
- Completely Free — No sign‑up, no account creation, no usage limits. Use as much as you want.
- Works Offline — Most tools work without an internet connection after the first visit.
- Fast & Reliable — Client‑side processing means instant results with no server delays.
- Cross‑Platform — Works on all devices: desktop, tablet, and mobile. Chrome, Firefox, Safari, Edge — all supported.
- Continuously Updated — New converters, calculators, and utilities added regularly based on user feedback.
DataFrog is trusted by professionals worldwide — from data engineers and software developers to financial analysts and business owners. No matter your industry, if you work with data, numbers, or code, DataFrog has a tool for your task.
📖 Featured Blog Posts
Ready to Get Started?
Choose your path — explore our converters, utilities, or calculators. All tools are free, private, and ready to use.