oRanges Omaha Hi/Lo Calculator

is a hand range and equity calculation tool designed to help 4-card Omaha Hi/Lo poker players better understand how often a range hits specific hands. It allows you to calculate the probability of a starting hand range fitting a given board, conveniently display opponents' ranges, and build your own ranges to significantly improve your skills.

The application also includes built-in expression parsers to help you create and filter input ranges, along with many other useful features.

A user-friendly interface helps you understand the structure of players' ranges and calculate equity. Equity can be calculated using either the Monte Carlo method or brute-force complete enumeration, depending on the user's choice.

You can enable or disable hands that meet certain statistics to fully analyze range narrowing by street and much more.

oRanges Omaha Hi/Lo Calculator is the complete solution for advanced Omaha Hi/Lo study.
Whether you're building complex ranges, practicing equity drills, or analyzing multiway pots, this tool has you covered.

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Windows Direct download link for Windows version Latest ver. 2.0.0.129 (updated 27.12.2025)

MacOS Direct download link for MacOS version

Manual User manual

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Powerful Features to Elevate Your Poker Strategy

Whether you're a serious grinder, solver enthusiast, or poker coach, our advanced range analysis tool gives you everything you need to study, simulate, and succeed.

Adaptive Interface
— Light & Dark theme support
— Clean, user-friendly design
Range Exploration
— Create and edit custom ranges
— Analyze how ranges hit unknown flops
— Range vs. Range board analysis
— Expression-based range filtering
— Monker solver and text format import/export
Equity Tools
— Monte Carlo and full enumeration support
— Next Card Equity visualizations
— Equity distribution graphs
— Pot odds calculator
Multiway Support
— 3+ player equity calculations
— Next card equity in multiway pots
— Multiway range statistics
Smart Analysis Tools
— User statistics with custom expressions
— Flop texture filtering
— Range File Tool: union, intersection, subtraction
Built-in Training
— Equity Trainer
— In-Range Trainer
System Compatibility
— Runs on Windows & macOS
Free Trial
— 2-day fully functional trial. Try Before You Buy!

Entering ranges

To enter a range, you can use the Range field, the range assistant that opens when you press the Range button, or the Hand button when you need to enter a single hand.

When you enter a range into the Range field, an expression parser is used that allows you to enter multiple hands according to the rules for composing expressions.

The expression syntax has a set of rules that must be used to efficiently enter ranges.

Import/Export ranges in text format.
Monker Solver formats are recognized:
(AdAs3s2s@50,AcAs3s2s@87,3h2h3s2s@100,...) and
(AhKh3s2s,1,942 KdKh3s2s,1,1068 )

Range Assistant

— User friendly graphical interface.
— Builds complex expressions for the range.
— Slider to set the lower and upper limits of the percentile.
— Sets card ranks ranges, suit pattern.
— Predefined Pair, Suit, Rundown filters.
— Integrated parser for syntax validation.

Statistics

— Shows In-Depth Statistics
— Shows overlap between different stats
— Applying weight to statistics
— Filters for activating selected statistics on each street postflop

Statistics section consists of four parts:
Made hands, Draw hands, Draws and made hands combination, User statistics.

User Statistics

— User statistics can be created based on the default statistics by composing expressions
— Union, Intersection, Substraction operators to compose an expression
— Integrated syntax parser checks the expression for correctness
— Generated user statistics can be saved for future use
— Up to 10 user statistics can be applied to flop, turn, river each

Equity calculation

— Use Monte Carlo simulation or brute-force enumeration to calculate equity in heads-up or multiway scenarios.

Flop texture filter

Flop texture filter is used to generate random flops with a specific structure.

With the help of this filter you can conduct a study how certain ranges fall into the boards with the selected texture.

— Generate flops with specific textures for targeted range analysis.
— Study how selected ranges interact with various board types.

Next card Equity

— Designed for checking how the Equity will be changed on the next street
— Shows all possible cards on next street and how they change the Equity
— Works only on flop and turn

Equity Distribution

— Shows the equity values of each hand in the range against the opponent's entire range.
— Shows frequency of equity intervals (in 10% buckets)
— Works only postflop

Multiway Equity Calculator

— Ranges can be entered using the Range Assistant
— Import ranges in text format. Monker Solver format is recognized.
— Multiway Next Card Equity tool is designed for checking how the Equity will be changed on the next street
— Visualizes how equity changes with every possible next card. Works only on flop and turn
— Storing ranges temporarily
— 6 buttons to save ranges

Equity Trainer

Equity Trainer tool is designed to practice evaluating hand equity against a range or specific hands on various boards.

Training can be carried out both against the whole range, and against hands selected from it at random.

Training can be done on the flop only, on the turn only, or on the flop and the turn at the same time. You can also fix the board which you want to train on.

There is also an In Range Training tool, which allows you to check whether a randomly selected hand from a given range falls into another selected range.

Perfect For:
— Poker players looking to sharpen their equity intuition
— Coaches and students working on range building
— Anyone wanting to train smarter, not just harder