100% FREE • OFFLINE MODE • CBR • USDT • TON • BTC • ETH

Currency & Crypto Converter

Instantly convert fiat currencies and cryptocurrencies right in your browser. Works offline with built-in approximate rates, fetches live rates when the page opens, and lets you share any calculation on Telegram.

● Approximate built-in rates loading live rates…
Quick amounts:
1000 RUB converts to:
10.81 USDT
1 RUB = 0.01081 USDT
1 USDT = 92.50 RUB
Instant summary for the entered amount:
🇷🇺 Ruble
0.00 ₽
🇺🇸 Dollar
$0.00
🇪🇺 Euro
€0.00
₮ Tether
0.00 USDT
💎 TON
0.00 TON
₿ Bitcoin
0.00 BTC

How currency and crypto rates are calculated

All calculations run 100% in your browser using a matrix of cross rates against the US dollar (USD pivot). The amounts you enter are never sent to any server. Built-in rates are approximate; click “Get live rates” to load current ones.

🏦 Official Bank of Russia rates

When the page opens (and when you click “Get live rates”), the converter loads the public daily rates of the Central Bank of Russia (via cbr-xml-daily.ru) for the ruble, dollar, euro, yuan, tenge, Belarusian ruble and UAE dirham, and crypto prices from the public CoinGecko API.

💎 TON & Web3 ecosystem

Supports The Open Network (TON) and the Tether stablecoin (USDT), with precision of up to 8 decimal places for BTC and ETH.

✈️ One-click Telegram sharing

Any calculation is packed into a deep link: your colleague opens the converter with the amount and currency pair already filled in.

🛠️

Related Developer & Office Tools

All tools →
🧮 Accounting

VAT Calculator Online (any rate)

Add or extract VAT at any rate (22% Russia 2026, 20%, 18%, 10%...), with the amount in words (Russian) for invoices.

Accounting & Finance Open →
📅 Contracts

Date & Working Days Calculator

Calculate working days and calendar days between dates, add business days to contracts, and check project deadlines.

Accounting & Contracts Open →
📊 Spreadsheets

CSV to JSON & JSON to CSV

Convert spreadsheet CSV data to JSON array and JSON to CSV with auto delimiter detection.

Tables & Data Open →
➗ Percent

Percentage Calculator

Five common calculations: percent of a number, what percent, percentage change, add and subtract percent.

Finance Open →
🏦 Loan

Loan Calculator with Amortization

Annuity and declining-balance payments, total interest and a full monthly schedule with CSV export.

Finance Open →
🏷 Discounts

Discount & Tip Calculator

Sale price, stacked discounts, tip amount and splitting the bill between people.

Finance Open →

Was this tool useful?

The site is free and has no paywalls. A small tip in TON or a share helps keep it running and add new tools.

Share in Telegram