Free
Fiat
Currency Converter
Convert between 10 major world currencies with a live, editable rate table.
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100% Free · Privacy-First · No Sign-Up
Exchange Insights, Financial Solutions & DIY Utilities for Everyday Tasks
Convert currencies, track Bitcoin, and run financial calculations — all inside your browser. Every tool on goyun.work is 100% free, fast, and privacy-first: your numbers are processed locally and never uploaded to a server.
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- Processing
- 100% Client-Side
- Sign-up
- Never Required
- Cost
- Always Free
Live Quick Convert
Runs in your browser
1 = · demo rates for illustration
Interactive Tools
Four calculators. Zero uploads.
Every card below is live — previews update from the same numbers you enter. Launch any tool for the full workspace.
Free
Crypto
Crypto Converter
Convert Bitcoin, Ethereum, Solana and more to your local currency.
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Free
Remittance
Exchange Rate & Fee Calculator
See exactly what you'll receive after transfer fees and margins.
Receives ≈
Free
Planning
Compound Interest Calculator
Project the growth of your savings with monthly contributions.
Projected ≈ in yrs
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Features
Built like production fintech, priced like a hobby project
Client-Side Engine
Every calculation runs in your browser's JavaScript engine — nothing is sent to a server.
Instant, No Sign-Up
Start calculating in seconds. No account, no email wall, no credit card.
Built for Every Device
Fully responsive layouts, from a small phone screen to an ultrawide monitor.
Ready for Live Data
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Privacy & Security
Your data stays in your browser
Files and calculations are processed locally. Nothing you type is uploaded, logged, or sold.
Processed locally
Every calculator runs directly in your browser. Your numbers never touch our servers.
No tracking, no data resale
We don't build ad profiles from your inputs. No account is ever required to use a tool.
Local storage only
Preferences are optionally saved in your browser's local storage — never on a remote database.
Contact & Support
Questions, feedback, or a tool idea?
We read every message. Typical response time is under 2 business days.