Craps Bankroll Calculator
Calculate the optimal bankroll for your craps session based on bet type, size, and risk tolerance. Know exactly how much to bring to the table.
Formula:
Bankroll = Units × Bet Size × Risk MultiplierRecommended Bankroll
$500
50 betting units
Risk of Ruin
98.5%
Expected Loss
$8.88
0.37% edge
95% Worst Case
$489
More odds = more variance = more bankroll needed
$
Your standard bet size
30-40 typical for line bets
Total planned playing time
How much risk can you accept?
Bankroll Recommendations
Minimum
$300
30 units
Higher bust risk
Recommended
$500
50 units
Balanced risk/comfort
Comfortable
$750
75 units
Low stress play
How Odds Affect Bankroll Needs
| Bet Type | Edge | Variance | $10 Bankroll* |
|---|---|---|---|
| Pass Line Only | 1.41% | 1.0 | $500 |
| Don't Pass Only | 1.36% | 1.0 | $495 |
| Pass + 1x Odds | 0.85% | 1.5 | $612 |
| Pass + 2x Odds | 0.61% | 2.0 | $707 |
| Pass + 3-4-5x Odds | 0.37% | 2.5 | $791 |
| Pass + 10x Odds | 0.18% | 4.0 | $1000 |
| Place 6 & 8 | 1.52% | 0.9 | $466 |
*Moderate risk bankroll for $10 base bets
Craps Bankroll Simulator
Monte Carlo simulation with 1,000 iterations
$
Your initial capital
%
Your expected advantage
%
Percentage of bankroll per bet
Total bets to simulate
Key Facts
- •50 betting units is standard for moderate risk tolerance
- •Taking odds increases variance - need more bankroll for same risk
- •Pass + 10x odds needs ~4x the bankroll of flat Pass bets
- •Risk of Ruin should typically be under 5-10% for recreational play
- •Trip bankroll should cover all expected playing sessions
Frequently Asked Questions
How much bankroll do I need for craps?
A general rule is 50 betting units for moderate risk tolerance. For $10 Pass + odds, that's $500. For $25 flat bets, $1,250. More aggressive players use 30 units; conservative players prefer 75-100 units.
Does taking odds require more bankroll?
Yes. While odds bets reduce house edge percentage, they increase variance. Pass + 3-4-5x odds has 2.5x the variance of flat Pass bets. You need more bankroll to handle the bigger swings, even though you'll lose less per dollar wagered.
What is Risk of Ruin in craps?
Risk of Ruin (RoR) is the probability of losing your entire bankroll before quitting. A 5% RoR means you'll go broke 1 in 20 sessions. Most recreational players target 5-10% RoR.
Should I bet more with a bigger bankroll?
Your bet size should maintain proper units-to-bankroll ratio. If you add money to your bankroll, you can increase bets proportionally. The goal is keeping risk of ruin at acceptable levels regardless of bet size.
Try These Examples
Quick-start with common scenarios
How this works
Calculations follow the published mathematics of the game — combinatorics for cards, probability theory for dice, and expected-value accounting for wagers. Results are verified against independent references (primarily Wizard of Odds). No calculation here is an opinion or recommendation; it is arithmetic applied to the rules of the game.
What this tool can’t do
When to consult a professional
This tool computes probability and expected value. It is not a betting system and cannot predict the outcome of any individual wager. If gambling is causing problems for you or someone you know, call the National Problem Gambling Helpline at 1-800-GAMBLER.
Sources
- [1]Wizard of Odds — Michael Shackleford, ASAIndustrywizardofodds.comAccessed Apr 21, 2026
Actuary; widely cited casino-game probability reference. Used for house-edge and EV verification.
- [2]National Council on Problem GamblingOfficial sourcencpgambling.orgAccessed Apr 21, 2026
Responsible-gambling guidance and 1-800-GAMBLER helpline.
Joseph OrdunaFounder & Software Engineer
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).
Recommended Bankroll
$500
50 betting units
Risk of Ruin
98.5%
Expected Loss
$8.88
0.37% edge
95% Worst Case
$489