The tools on 100RTP.games are built for one purpose: turning casino claims into checkable numbers. A headline like “100% RTP,” “99% return,” “zero edge,” or “provably fair” is not enough by itself. You need to check the math behind it.
This hub links to our main calculators and verification tools. Each tool is designed for a specific question: how much does the edge cost, what should a Mines multiplier be, how long does an allowance last, how blackjack rules change RTP, or whether a completed game result matches the published seed data.
Use these tools as audit aids, not betting systems. They can calculate expected value, payout tables, rule estimates and verification outputs. They cannot remove variance, guarantee withdrawals, predict future rounds or make gambling safe.
Tool Index
Edge Cost Calculator
Calculate how much house edge costs at different RTP levels. Compare 100%, 99.9%, 99%, 97% and 96% by wager volume, session length and game speed.
- Use for: RTP cost comparison
- Inputs: wager volume, RTP or house edge
- Best paired with: Edge Difference guide
Mines Multiplier Calculator
Calculate exact survival probabilities, fair multipliers and payout values for a standard 5×5 Mines grid with 1–24 mines.
- Use for: multiplier and survival checks
- Inputs: mine count, bet size, return mode
- Best paired with: Duel Mines audit
Zero-Edge Allowance Calculator
Estimate how quickly a fair-play allowance is used based on bet size, game pace and daily wager volume. Useful for comparing low-stakes play with high-volume sessions.
- Use for: allowance usage and post-cap planning
- Inputs: bet size, rounds per hour, session length
- Best paired with: Zero-Edge Allowance Explained
Blackjack RTP Calculator
Estimate blackjack house edge and RTP from rules such as deck count, 3:2 vs 6:5, S17/H17, doubling, splits, surrender and strategy quality.
- Use for: blackjack rule comparison
- Inputs: rules, strategy quality, edge return
- Best paired with: Duel Blackjack audit
Provably Fair Checker
Check server seed commitments, generate HMAC-SHA256 outputs and reproduce supported Dice, Crash or Mines results from completed bet data.
- Use for: completed-round verification
- Inputs: server seed, client seed, nonce and game mode
- Best paired with: Provably Fair guide
Which Tool Should You Use?
| Question | Use This Tool | What It Tells You |
|---|---|---|
| How much does 1% house edge cost? | Edge Cost Calculator | Expected cost by wager volume, RTP and session profile. |
| What should a Mines multiplier be? | Mines Multiplier Calculator | Exact survival probability and theoretical payout for each safe reveal. |
| How fast will I use a $50K allowance? | Allowance Calculator | Estimated allowance usage by bet size, game pace and session length. |
| How much does a 6:5 blackjack rule cost? | Blackjack RTP Calculator | Estimated house edge and RTP based on table rules and strategy quality. |
| Did a completed round match the seed data? | Provably Fair Checker | Whether the revealed inputs reproduce the reported result. |
| Does provably fair prove RTP? | Provably Fair Checker + game audit | PF checks outcome integrity; RTP still needs payout math. |
What These Tools Can and Cannot Do
| They Can Help You Check | They Cannot Guarantee |
|---|---|
| Expected cost from RTP or house edge. | A winning session. |
| Fair multiplier values for supported game formats. | That every operator uses the same paytable. |
| Allowance usage and post-cap exposure. | That platform terms will never change. |
| Blackjack rule impact estimates. | The exact RTP of every possible blackjack implementation. |
| Server seed commitment and supported result reproduction. | Withdrawal safety or strong regulation. |
| Whether a claim is mathematically plausible. | That gambling is safe or risk-free. |
How the Tools Fit the Audit Process
A complete casino game audit usually has three layers.
- Pricing layer: check RTP, house edge, payout table or multiplier formula.
- Randomness layer: check whether the outcome can be reproduced from seed data.
- Platform layer: check allowance limits, terms, withdrawals, KYC and account risk.
No single calculator covers all three. For example, the Provably Fair Checker can verify a completed Dice result, but it does not prove that the multiplier was fair. The Edge Cost Calculator can show that 99% RTP costs $10 per $1,000 wagered, but it cannot prove an operator actually used a 99% paytable.
Recommended Workflows
To compare RTP cost
- Open the Edge Cost Calculator.
- Enter your expected wager volume.
- Compare 100%, 99.9%, 99%, 97% and 96% scenarios.
- Read 100% vs 99% vs 96% RTP for context.
To check a Mines game
- Open the Mines Multiplier Calculator.
- Select the same mine count as the game.
- Compare displayed multipliers with the calculator output.
- Use the Provably Fair Checker if you also want to reconstruct the board.
To screen a blackjack table
- Open the Blackjack RTP Calculator.
- Enter deck count, payout, dealer soft-17 rule, doubling, splitting and surrender rules.
- Set strategy quality realistically.
- Compare the estimated RTP with the table’s marketing claim.
To verify a completed round
- Save the server seed hash before play.
- After seed reveal, copy server seed, client seed and nonce.
- Use the Provably Fair Checker with the correct game mode.
- Compare the reproduced result with your bet history.
Related Guides
- What Does 100% RTP Mean?
- Can You Lose with 100% RTP?
- 100% vs 99% vs 96% RTP
- Zero-Edge Allowance Explained
- How to Verify Provably Fair Games
- Zero Edge vs Rakeback
Bottom Line
The Tools section is the practical side of 100RTP.games. The guides explain the concepts; the calculators let you test them. Use them to compare cost, audit multipliers, estimate allowance usage, screen blackjack rules and verify completed outcomes.
The safest interpretation is narrow: tools can check math and seed data, but they cannot remove gambling risk. Treat them as verification aids, not as systems for profit.