See the True Cost of Everything in Bitcoin

Convert prices to Bitcoin as you browse the web.
Opportunity Cost automatically displays fiat prices in BTC or sats, helping you think in a Bitcoin standard.

Key Features

See the opportunity cost of Bitcoin

Think in Bitcoin, Not Fiat

Instantly see the true Bitcoin cost of everything. Convert prices from 10+ currencies to BTC or sats in real-time as you browse - no more mental math required.

Think in Bitcoin, Not Fiat

Works Everywhere

From Amazon to Twitter, news sites to local stores - see Bitcoin prices on any website. One extension, infinite Bitcoin price awareness.

Zero Trust Required

100% local processing, zero data collection, fully open source. Your browsing habits stay private while you build Bitcoin intuition.

Smart Bitcoin Display

Intelligently shows sats for small amounts, BTC for large ones. Or lock it to your preference - because Bitcoiners have strong opinions about units.

Smart Bitcoin Display

Download the Extension

Opportunity Cost is available for Chrome browsers. Firefox coming soon! Install it today to start seeing prices in Bitcoin!

Chrome

Chrome Extension

Version 0.0.2

Add to Chrome
Brave

Brave Browser Extension

Version 0.0.2

Add to Brave
Firefox

Firefox Add-on

Coming Soon

See It in Action

See Bitcoin values on shopping sites, real estate listings, financial platforms, and more

Zillow with Bitcoin prices
Nike with Bitcoin prices
Apple with Bitcoin prices
Hats with Bitcoin prices

About Opportunity Cost

Why We Built This

Opportunity Cost was created to help people better understand the value of their money in terms of Bitcoin. In an era of inflation and monetary uncertainty, Bitcoin provides a different perspective on value.

Our mission is to help everyone think in terms of Bitcoin's sound money principles, making the transition to a Bitcoin standard more intuitive for everyday purchases.

The extension is built with privacy and performance in mind, running entirely in your browser with no data collection.

Frequently Asked Questions

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