Free Sports Betting Tools
The same calculators TIPERO's tennis model uses internally — open math, no signup, no email gate, no popups. Bookmark them and use forever.
Kelly Criterion Calculator
Compute optimal bet size from your probability and the offered odds. Includes fractional Kelly (TIPERO uses 0.15) and bankroll-aware sizing.
Open calculator →Expected Value (EV) Calculator
The single most important number in sports betting. Get EV per bet, ROI %, break-even probability, and projected profit over volume.
Open calculator →Odds Converter (all formats)
Live two-way conversion between decimal, American, fractional, Hong Kong, Malay, Indonesian and implied probability. Plus a 2-way vig calculator.
Open converter →Parlay / Accumulator Calculator
Combine up to 12 legs. See combined odds, implied probability, compounded vig, break-even hit rate per leg and EV when you provide true probabilities.
Open calculator →Bankroll & ROI Tracker
Log every bet (stake, odds, result) and see real running profit, ROI %, hit rate, average odds and longest streak. Stored locally in your browser. Export to CSV.
Open tracker →No-Vig (No-Juice) Calculator
Strip the bookmaker margin from any 2-way market. Get vig %, fair no-vig probabilities and the true fair price both sides — the math sharps use to spot soft-book +EV.
Open calculator →Closing Line Value (CLV) Calculator
Enter your entry price + closing line — get CLV %, implied edge gained and projected long-run profit. The single most reliable signal that you're a winning bettor.
Open calculator →Dutching Calculator
Split a total stake across 2–10 selections so any winner returns equal profit. Includes per-leg stakes, combined implied probability and ROI per winner.
Open calculator →How TIPERO uses these
- Kelly sizes every recommended stake — 0.15× fractional Kelly with 0.25u floor and 1.50u ceiling per bet.
- EV is the gating filter: only bets with EV ≥ +2% (CORE/VALUE) or +25% (LONG/ULTRA tiers) make the daily picks list.
- Odds conversion happens silently in the pipeline — TennisExplorer scrapes decimal, but our backtest store keeps no-vig fair lines for CLV math.
Related guides
Want the probabilities ready-made?
TIPERO's tennis model outputs calibrated probability + EV + Kelly stake for every ATP, WTA and Challenger match — every day. Annual plan locked at €199/year, or 7-day free trial.