Prediction market payout calculator

Runs entirely in your browser. Enter a stake and an entry price to see contracts, payout, profit, ROI and the implied probability. The hedge check compares a Yes price on one platform with a No price on another.

Single position

Contracts

Payout if Yes

Profit if Yes

ROI

Implied probability at this price: . Worked example loaded above: a $100 stake at 62c buys 161.29 contracts, pays $161.29 if Yes, a $61.29 profit and 61.29% ROI. Fees are not included; each platform charges its own, listed on its profile page.

Hedge check across two platforms

Cost per pair

Profit per pair

Pairs bought

Locked payout

Locked profit

Margin

Example loaded above: Yes at 62c plus No at 35c costs 97c per $1 pair. A $970 budget buys 1,000 pairs, locks a $1,000 payout and a $30 profit, a 3.09% margin before fees. A pair only locks anything if both markets resolve on the same rules, so read both rulebooks first.