Currency Conversion in Plain Text

Convert between USD, EUR, JPY, KRW, CNY and GBP with live rates, mix currencies in one line, and convert crypto to fiat. Examples for Calto.

Updated: 2026-09-16

Calto treats a currency like a unit. Write it with a symbol, a code or a word, and convert with in.

Basic conversion

$100 in krw                    ≈ ₩147,000
€50 in usd                     ≈ $54
100 pound in yen               ≈ ¥20,000

Rates are fetched live and cached for 24 hours. The values on this page are illustrative.

Mixed currencies in one line

100 USD + 50000 KRW            ≈ ₩197,000
€20 + $10                      ≈ $31.60

The result takes the last currency written. Reorder the terms to change the output currency.

Convert a whole section

flight = $450
hotel = €260
food = $200
sum in yen                     ≈ ¥136,000

sum adds the section and in yen converts it. Keep one currency per section for sum; mixed currencies are fine within a single line.

Budget in your currency, spend in theirs

daily = ₩80000
daily in yen                   ≈ ¥8,700
days = 5
daily * days in yen            ≈ ¥43,500

Cryptocurrency

Six coins: BTC, ETH, SOL, XRP, DOGE, ADA. Convert to any supported fiat currency.

0.5 btc in usd
2 eth in krw

Coin and currency rates need an internet connection once a day; everything else in Calto works offline.