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Prediction Market to Sports Odds Converter icon

Prediction Market to Sports Odds Converter

Append sportsbook-style odds next to prediction market prices (Decimal, American, Fractional) with optional fee adjustment.

Users147Current public install base
Rating--Store average score
Reviews0Public review volume
Manifest versionV3Extension platform version
7-day growth--Net users gained this week
7-day growth rate--Relative weekly velocity
Preview

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3 assets
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1471471471471472026年7月11日2026年7月11日2026年7月11日Latest: 147
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1-day growthDeclining
-2-1.9%
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30-day growthDeclining
-5-4.63%
Technical snapshot

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Version1.2.0
ManifestV3
Size13.15KiB
Languages1English
Published
Store updated
Last crawled
English
Overview

Product summary

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Chrome extension that appends sportsbook-style odds next to prediction market prices on Polymarket and Kalshi. Shows Decimal, American, and Fractional. Optional fee adjustment (in percentage points) to model effective probability before conversion.

- Finds text like `55%` or `$0.55` and computes:

- Decimal: 1 / p

- American: if p >= 0.5 → -(p/(1-p))*100, else ((1-p)/p)*100

- Fractional: (1 - p) / p as a simplified fraction (approx.)

- Works on SPA updates using a `MutationObserver`.

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Store average score--Chrome Web Store aggregate rating, including ratings without synced review text
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Reviews with text0Synced review bodies
Total ratings / reviews0Chrome Web Store public rating/review count

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