Spares Calculator

The scientific way to forecast spare parts.

Easy to Use Spare Parts Optimization Software

Spares Calculator lets you to work out the risk of equipment stock-out so that you can plan your contracts and logistics operations accordingly. Simple graphs and tables make figures easy to interpret and explain to colleagues and customers. Attractive reports enhance proposals, presentations and plans.


Quickly assess Availability, Stock-Out-Risk and Mean-Time-Between-Stock-Out and determine your optimum stock levels.


Use as a presentation tool in meetings and workshops.

Forecast Budgets and Costs

Work out exactly how much you need to spend and when.

Eradicate Redundant Stock

Identify slow moving stock and plan alternative strategies.

Justify Financial Investments

Easily justify costs and investments. With the facts and figures at your fingertips, you’re in control.


Based on de facto industry standard models and proven in literally thousands of real-life and simulated trials.

Easy to Use

No need for time-consuming training or specialist staff.

Eliminate Outages

Find the right level of inventory in seconds.

Excellent Value

Low initial cost and discount on multiple orders.

Attractive Presentation

Simple reports make figures easy to interpret and explain to customers and colleagues.

Spares Calculator is used by clients in over 30 countries.

Spares Calculator customers include OEMs, government agencies, consultancies and universities. It is used by engineers, maintenance managers, academics and professional logisticians in some of the biggest and most prestigious companies in the world.

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