Polymarket Payout & Odds Calculator
Work out exactly what a Polymarket position pays. Calculate payout, profit, ROI and breakeven, convert prices to implied probability and American or decimal odds, and model your position P&L. Free, instant, and no login.
Free · No login · Runs entirely in your browser, so no data leaves your device.
How do Polymarket payouts work?
Every Polymarket share settles at $1.00 if it wins and $0 if it loses. So if you buy a YES share at 40¢, you pay $0.40 to win $1.00, a $0.60 profit if it resolves YES or a $0.40 loss if it does not. Because each winning share is worth exactly $1, the price you pay in cents is also the market-implied probability of the outcome: 40¢ means the market prices the event at about a 40% chance. This calculator turns any price and position size into your payout, profit, ROI and breakeven in one step.
Step by step
How to use the calculator
- 1
Pick a mode
Choose a tab: Payout & Profit to size up a new bet, Odds ↔ Probability to convert a price into implied probability and American or decimal odds, or Position P&L to value a trade you already hold.
- 2
Enter the price
Type the Polymarket price in cents (1 to 99¢). This is the market-implied probability, so 40¢ means about a 40% chance. In Position P&L, add your exit or current price too.
- 3
Add your size
Enter a dollar stake or a number of shares using the $ Stake / Shares toggle. Optionally switch on "Include Polymarket fee" and pick the market category to fold in the taker fee.
- 4
Read your result
See your payout, profit, loss, ROI and breakeven probability update instantly. Use "Copy link" to save or share the exact scenario.
Do Polymarket fees affect my payout?
Yes, if the market has fees enabled. Since March 2026 Polymarket charges a taker fee that varies by market category and price: roughly 0.75% on sports, up to 1.8% on crypto, and around 1% on politics and finance. The fee shrinks toward zero near 0¢ and 100¢. Limit-order makers pay nothing, geopolitics markets are free, and markets created before the change stay fee-free. Turn on "Include Polymarket fee" in the Payout & Profit and Position P&L tabs to fold the category's taker fee into your numbers.
| Category | Taker fee rate | Max / 100 shares |
|---|---|---|
| SportsSports | 0.03 | $0.75 |
| Politics / Finance / TechPolitics, Finance, Tech, Mentions | 0.04 | $1.00 |
| Economics / Culture / OtherEconomics, Culture, Weather, Other | 0.05 | $1.25 |
| CryptoCrypto | 0.072 | $1.80 |
| Geopolitics (free)Geopolitics / world events | Free | $0.00 |
Taker fees only; limit-order makers pay nothing. Rates as of 2026-07-08; fees can change, see Polymarket's fee page.
From a number to a strategy
Knowing your payout is step one. The harder question is who to bet with. Polycopy tracks the traders who actually have edge on Polymarket, shows their verified on-chain P&L, and lets you follow or copy them. Model your scenario here, then see who is worth following.
Frequently asked questions
How do Polymarket payouts work?
Every share resolves to $1.00 if the outcome you bought wins, and $0 if it loses. Your cost is whatever you paid for the share, so a YES share bought at 40¢ returns $1.00 (a 60¢ profit) if it resolves YES, or nothing if it resolves NO. Your payout equals your number of shares times $1.
What does the price on Polymarket mean?
The price in cents is the market-implied probability of the outcome. A share trading at 40¢ means the market is pricing that outcome at roughly a 40% chance. It is also your breakeven: you come out ahead if the true probability is higher than the price you paid.
How do I calculate my profit on a Polymarket bet?
Divide your stake by the price to get your number of shares, then your profit if it wins is shares minus stake (each winning share is worth $1). For example, $100 at 40¢ buys 250 shares, which pay $250 if it wins, a $150 profit or 150% ROI. The Payout & Profit tab does this instantly, with an optional fee line.
How do I convert Polymarket prices to betting odds (American/decimal)?
Use the Odds ↔ Probability tab. A price of 40¢ is a 40% implied probability, which equals decimal odds of 2.50 (1 / 0.40) and American odds of +150. Edit any field (price, probability, decimal, or American) and the others update automatically.
Does Polymarket charge trading fees?
Yes, on markets with fees enabled. Since March 2026 Polymarket charges a taker fee that varies by market category and price: roughly 0.75% on sports, about 1% on politics and finance, up to 1.8% on crypto, and 0% on geopolitics, with the fee shrinking toward zero near 0¢ and 100¢. Limit-order makers pay nothing, and markets created before the change stay fee-free. Deposits and withdrawals are free aside from network gas.
What is the optional "include fee" toggle?
It folds Polymarket's taker fee into your payout and P&L. Turn it on in the Payout & Profit or Position P&L tabs and choose the market category (sports; politics, finance, tech; economics, culture, other; crypto; or free geopolitics) to see your net numbers after the fee. It is off by default so the headline figures stay simple.
Is this calculator affiliated with Polymarket?
No. It is a free, independent tool built by Polycopy. It runs entirely in your browser, needs no login, and does not send your inputs anywhere. Always confirm current fee schedules on Polymarket's own fee page.
Can I see my actual trade history and P&L?
Yes. This calculator models scenarios, but if you want your real, realized numbers, use our Polymarket trade export tool to download your full trade history and P&L for any wallet.
Disclaimer: Polycopy is an independent third-party tool and is not affiliated with or endorsed by Polymarket, Polymarket. Nothing on this page constitutes financial, investment, or trading advice. Past performance does not guarantee future results. All trading involves risk of loss — only trade with funds you can afford to lose. Full terms.