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Calculators

Six free tools, grounded in each platform's own real, documented fee formula — no account required, nothing stored.

Market Fees

See exactly how much each platform's own documented fee formula charges at a given price.

¢
$
Fee Cost
$2.80
Fee (% of Stake)
2.80%

Vig & No-Vig

Real overround embedded in a two-sided market's own pricing, and the fair (no-vig) probability with it removed.

¢
¢
Vig (Overround)
3.00pt
Fair Yes
56.3%
Fair No
43.7%

Expected Value

Whether a trade is +EV given your own real probability estimate versus the current market price — not a claim your estimate is correct.

%
¢
$
Expected Value
+$18.18
EV (% of Stake)
+18.2%

Odds Converter

Convert between implied probability, American odds, and decimal odds — two independent converters, since the odds format you start from usually differs from the one you're checking it against.

%
American Odds
+150
Decimal Odds
2.50
Implied Probability
40.0%
Decimal Odds
2.50

Parlay

Combine several independent legs into a blended probability, payout, and ROI — assumes each leg is independent, which a real correlated parlay (e.g. two props in the same game) won't be.

Leg 1%
Leg 2%
$
Combined Probability
42.00%
Payout
$47.62
ROI
+138%

Net Profit

Real take-home after each platform's own documented fee, and an optional flat tax rate on winnings you supply — this app doesn't know your real tax situation, so nothing is assumed by default.

¢
$
%
Gross Profit
+$66.67
Platform Fee
-$2.80
Tax
-$0.00
Net Profit
+$63.87