What is the best crypto and currency converter app?

For combined crypto + fiat conversion on mobile, Coinvertor leads with 500+ currencies, real-time rates, and ad-free Premium at $14.99/year. CoinGecko leads on the web for users who also want market data.

Do these apps support both crypto and fiat?

Coinvertor, CoinGecko, and CoinMarketCap support both. XE is fiat-first with limited crypto. Coinbase and Crypto.com support what their exchange lists.

Roundup · Updated May 3, 2026

7 Best Crypto &
Currency Converter Apps

Q: Are converter apps free?

Most have free tiers. Some — including Coinvertor — offer optional paid tiers that remove ads and unlock features like real-time updates and unlimited favorites.

Whether you want a focused mobile app, a web tool with market data, or your exchange's built-in converter — here are the seven options worth your install/bookmark in 2026, ranked.

Methodology: tools were ranked across five criteria — currency coverage (crypto + fiat), mobile UX, ad/account friction, pricing, and rate-source transparency. We disclose Coinvertor as our own product; competitors were ranked on their own merits.

TL;DR — quick picks

Best overall: Coinvertor — mobile-native, crypto + fiat, ad-free Premium.
Best web tool: CoinGecko — deep market data alongside conversion.
Best for fiat travel: XE Currency — 170+ fiat currencies, money transfer.
Best if you use an exchange: Coinbase or Crypto.com.

The list

Coinvertor

Free + $14.99/year Premium · iOS, Android, Chrome

Coinvertor takes the top spot by being the most focused product in the category. 500+ currencies (crypto + fiat) in one mobile-native app, drag-to-reorder favorites, real-time rates from Binance feeds, and an optional Premium tier that removes ads and unlocks unlimited favorites. There's also a Chrome extension — uniquely so in this list.

Why it ranks #1: for the actual job most people use a "converter" for — quickly turning amount X in currency A into currency B — nothing in this list does it faster on a phone.

Where it loses: if you also want charts, market caps, news, or portfolio tracking, look elsewhere. Coinvertor is on purpose not those things.

App Store Google Play

CoinGecko

Free · Web (mobile portfolio app)

CoinGecko's web converter is the strongest non-mobile option in this list. Deep market data, charts, and news live alongside the converter, all in one tab.

Best for: desktop users who research before they convert.

Tradeoff: mobile experience is portfolio-tracker-shaped, not converter-shaped.

CoinMarketCap

Free · Web (mobile portfolio app)

The original crypto-data destination. Massive coverage, but the converter is buried in a UI that prioritizes news, charts, and ads. Functional, just not the cleanest place to convert.

Best for: users who already have CoinMarketCap open for other reasons.

XE Currency

Free · iOS, Android, Web

The fiat heavyweight. 170+ currencies, money transfer, and a polished mobile app. Crypto support is thin compared to crypto-native tools.

Best for: travelers, freelancers, and anyone whose conversion needs are 95% fiat.

Coinbase Converter

Free · Web, iOS, Android (account for full app)

Fast, ad-free, and well-designed — but limited to assets Coinbase lists. Native fit if you're already a Coinbase user; overkill otherwise.

Crypto.com Price

Free · Web, iOS, Android

Conversion is a feature buried inside Crypto.com's exchange product. Useful if you're inside that ecosystem, less compelling as a standalone tool.

Currency Converter Plus

Freemium · iOS, Android

A long-running mobile fiat converter with light crypto support. Decent if you specifically want a fiat-first mobile app and don't mind ads on the free tier.

How we ranked these

Five criteria, weighted roughly equally:

Currency coverage. Both crypto and fiat. A converter that only does one half loses points for "currency converter" intent.
Mobile UX. Most people convert on their phone. A web-first tool is a partial answer.
Ad/account friction. Tools that demand sign-up or push ads aggressively rank lower.
Pricing. Free tier should be useful; paid tier (if any) should be transparent.
Rate-source transparency. Where do the rates come from? Coinvertor cites Binance for crypto; XE cites its own market data; CoinGecko/CMC aggregate.

Disclosures

Coinvertor is our own product, made by Black Box Code LLC. We've ranked it #1 because we believe it's the best fit for the most common use case (mobile crypto + fiat conversion). If your job-to-be-done is different, we've called out the right alternative for each case above.

Pricing data accurate as of May 3, 2026. We re-review this list quarterly.

FAQ

What's the best crypto and currency converter app?

For combined crypto + fiat on mobile, Coinvertor. For web research + conversion, CoinGecko. For fiat-only travel, XE.

Are converter apps free?

All seven have free tiers. Coinvertor's optional Premium ($14.99/year) removes ads and unlocks unlimited favorites.

Which converters work offline?

Most converter apps cache the last-known rate and let you convert offline. Real-time rates always require a connection.

How accurate are the rates?

Rates from any free converter are reference rates — not the rate you'll get at an exchange or remittance provider, which include fees and spreads. Coinvertor's crypto rates come from Binance and update in real time on Premium.