ProphetX
See American odds directly inside ProphetX — converted right in the market interface while the percentage price stays visible.
- Quote prices
- Market Orders
- Limit Orders
- Alternate run lines & totals
- Automatic quote conversions
OddsDisplayby Everything Odds
Prediction markets.
Familiar odds.
American odds on the platforms you already use. OddsDisplay converts percentage-based prices into American odds directly on ProphetX, Kalshi, Polymarket US, and Novig.
Display-only — it never places trades. Current version installs manually through Chrome Developer Mode.
Colorado44%
Washington56%
Colorado44%+127
Washington56%-127
See OddsDisplay in action
Real screenshots — American odds appear directly alongside the market prices you already see.
ProphetX
See American odds directly inside ProphetX. OddsDisplay automatically converts ProphetX percentage prices into familiar American odds right inside the market interface — while keeping the original percentage visible.
- Quote prices
- Market Orders
- Limit Orders
- Alternate Run Lines
- Alternate Totals
Novig
Novig — American odds beside every probability price across spread, total, and moneyline.
Kalshi
Kalshi — American odds displayed directly beside native Yes/No pricing and the order book.
Polymarket US
Polymarket US — market prices and the full order book annotated with American odds.
Supported markets
Four platforms today. More based on demand.
Kalshi
American odds across Kalshi's sports and market interfaces.
- Sports browse cards
- Market pages
- Yes/No prices
- Order books
- Trade-ticket price displays
Polymarket US
American odds throughout the Polymarket US trading experience.
- Sports markets
- Market probabilities
- Order books
- Trading interface prices
- Limit-price helper
Novig
Probability prices automatically translated into American odds.
- Market probability displays
- Live price updates
ProphetX, Kalshi, Polymarket, and Novig are third-party platforms. OddsDisplay is an independent product and is not affiliated with, endorsed by, or sponsored by these platforms.
How it works
Step 1
Install
Download the extension and load it into Chrome.
Step 2
Visit a supported market
Browse Novig, Kalshi, Polymarket US, or ProphetX exactly as you normally do.
Step 3
See American odds automatically
Probability and contract prices get their American-odds equivalent directly in the interface, updating live as prices move.
43%+13360%-15075%-300Standard probability-to-American-odds conversion
Why traders use it
Familiar format
The same American odds format sportsbooks use — no mental probability conversions while you browse.
Works where you trade
Odds appear directly inside supported market interfaces — no separate tab or calculator.
Live updates
When a market price changes, the displayed odds update automatically.
Display only
It never places, modifies, or submits trades, and never hides the native price.
Pricing
Lifetime Access
$5One-time payment
- Current extension version (v0.3.0)
- Novig support
- Kalshi support
- Polymarket US support
- ProphetX support
- One license key for up to 3 devices
- Future updates included
- 7-day refund policy
Before you buy: the current version installs manually through Chrome Developer Mode — it is not yet in the Chrome Web Store. Full instructions are included and shown below.
Installation, up front
No surprises after purchase: this is the exact installation process. It takes a couple of minutes and only requires following the steps.
Download OddsDisplay
You receive a packaged ZIP file after purchase.
Extract the ZIP
Right-click → Extract All (or double-click on Mac). Keep the extracted OddsDisplay folder on your computer — Chrome loads the extension from this folder.
Open chrome://extensions
Paste chrome://extensions into Chrome's address bar.
Enable Developer Mode
Use the toggle in the top-right corner. It must stay enabled while you use this manually installed version.
Click “Load unpacked”
The button appears once Developer Mode is on.
Select the extracted OddsDisplay folder
Pick the folder that directly contains manifest.json. The extension is now installed.
Open OddsDisplay
Click the OddsDisplay icon in Chrome's toolbar.
Paste your license key and click Activate
One key covers up to 3 of your devices.
The current version installs manually through Chrome Developer Mode — it is not yet in the Chrome Web Store. Full instructions are included, and the distribution method may change in the future.
Frequently asked questions
Does this place trades?
No. It is display-only. The extension never places, modifies, or submits trades or orders.
Does it change the actual market price?
No. It only displays the American-odds equivalent alongside the site's existing price. The native price remains visible and untouched.
Which sites are supported?
Novig, Kalshi, Polymarket US, and ProphetX.
Does it work with live-changing prices?
Yes. The extension monitors supported price elements and updates the displayed American odds as prices change.
On ProphetX, why do the highlighted quote cells update a moment after the rest?
That timing comes from ProphetX itself: after a line change, ProphetX refreshes its highlighted best-price cells slightly later than the rest of the odds board (typically within a couple of seconds). OddsDisplay converts each price the instant it changes, so the American odds shown always match the percentage displayed beside them — the extension never predicts or substitutes a price.
Is this available in the Chrome Web Store?
Not yet. The current version is installed manually using Chrome Developer Mode and “Load unpacked”. The full process is shown in the installation section above.
Do I need Chrome Developer Mode?
For the current distribution method, yes. This may change if the distribution method changes in the future.
What permissions does OddsDisplay require?
Two Chrome permissions: storage (remembers your settings and license state) and alarms (a timer for the roughly-weekly license check). Its content scripts run only on novig.com, kalshi.com, polymarket.us, and prophetx.co — it cannot run on any other website — and it requests no access to tabs, cookies, or browsing history.
Do you access my login or financial information?
No. The extension's only network calls are license activation and a roughly-weekly license verification to the Everything Odds licensing service, carrying just your license key and a random installation ID. It never sends passwords, bank information, wallet keys, trades, positions, browsing activity, or the prices you're viewing — and it contains no analytics.
How does the license work?
One $5 purchase gets you a license key that activates OddsDisplay on up to 3 of your devices. Activation needs internet once; after that the extension re-checks your license about weekly and keeps working through outages for up to 14 days. Lost your key? Support can revoke it and issue a replacement.
What is the refund policy?
7 days, no hoops — email support@everythingodds.com. A refunded purchase deactivates its license key.
Is this betting advice?
No. It is an odds-formatting and display tool. The American odds shown are mathematical conversions of the displayed price — they are not recommendations.
Will more platforms be added?
Potentially, based on demand. Lifetime access includes future updates to the product.