Monopoly Trade Calculator

By Reid Calloway, Editor

Evaluate trades, property values & winning probability

Player 1 Offers

Check properties you're receiving. Select houses (0-4) or Hotel (H). Add cash.

Player 2 Offers

Check properties you're receiving. Select houses (0-4) or Hotel (H). Add cash.

Property Color Cost Rent (0H) 1 House 2 Houses 3 Houses 4 Houses Hotel Value Score

Property Landing Probability

Based on standard two-dice rolls from GO. Properties near Jail are landed on most frequently.

Best Value Properties (By Value Score)

Value Score = expected rent income weighted by landing probability and housing cost.

Strategic Tips

• The orange set (Ventnor, Marvin Gardens, Connecticut) is the best value for the price because players sent to Jail frequently roll out onto these spaces.
• The red set offers excellent return on investment with moderate cost.
• The dark blue set (Park Place, Boardwalk) has the highest individual rents but is the worst value relative to cost & landing probability.
• Monopolies with houses are far more valuable than hotels on cheaper properties.
• When trading: prioritize complete color sets over individual expensive properties.

Disclaimer: This tool is for entertainment and educational purposes only. It is not affiliated with Hasbro, Monopoly, or any official Monopoly product. Property values and probabilities are based on standard US Monopoly rules and may vary by edition. Trade evaluations are algorithmic estimates — actual trade value depends on game state, player positions, and strategy.

Is That Monopoly Trade Actually Fair?

More Monopoly games are won and lost at the negotiating table than on the dice. The trouble is that a property's face value tells you almost nothing about what it is really worth. This calculator scores a proposed trade using rent potential, how often each space gets landed on, and whether the deal completes a color set, so you can tell a good offer from a trap.

How this calculator works

Enter the properties and cash on each side of the trade. The tool weighs each property by its rent potential and landing probability, adds the value of completing a monopoly, and returns a fairness score showing who really comes out ahead.

What makes a property valuable

A property is worth roughly its expected rent multiplied by how often opponents land on it, and that value jumps once you own the whole color set, because rent doubles on undeveloped monopolies and multiplies fast with houses. Landing probability is not even across the board either. Spaces just past Jail get visited most, since so many players leave Jail each game, which is why the oranges and reds are prized far beyond their price tags.

Worked example

You are offered a cheap purple property plus cash for one orange property.

How to use it

  1. List every property and dollar changing hands.
  2. Check the fairness score and the set-completion warnings.
  3. Adjust the cash on one side until the score balances, or walk away.
  4. Never trade an opponent the final piece of a high-traffic monopoly without a large premium.

Tips

Frequently asked questions

Does it account for landing probability? Yes, high-traffic spaces are weighted more heavily.

Does it value monopolies? Yes, completing a color set is a major factor in the score.

Can I include cash and multiple properties? Yes, on both sides of the trade.

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