Rationa - party calculator

Plan your event with confidence and avoid unnecessary costs.

Rationa is a smart party calculator that helps you estimate how much food and drink you need for your event. Whether you are planning a barbecue, birthday, wedding, baptism, New Year’s party, or family gathering, Rationa gives you fast and practical estimates in seconds.

Instead of guessing quantities or buying too much just in case, Rationa helps you plan smarter, reduce waste, and stay in control of your event budget.

Simply choose your event type, number of guests, and location. Rationa calculates the estimated amount of food, alcoholic drinks, and non-alcoholic drinks you should prepare.

KEY FEATURES

Fast event calculator: get quick food and drink estimates based on your event details.

Multiple event types: plan for barbecues, birthdays, weddings, baptisms, New Year’s events, private parties, and more.

Smart quantity estimates: use balanced calculations designed to help you avoid overbuying and reduce unnecessary waste.

Indoor and outdoor adjustments: Rationa adapts estimates based on where your event takes place.

Simple modern interface: plan quickly with a clean experience built for fast decisions.

Calculation history: save previous estimates and revisit them whenever you need.

Metric and imperial units: choose the unit system that works best for you.

SAVE MONEY AND REDUCE WASTE

Planning food and drinks for an event can easily lead to overbuying. Rationa helps you find a better balance by giving you a clear estimate before you shop.

Use Rationa to avoid unnecessary purchases, reduce food and drink waste, plan your event budget more efficiently, and prepare with more confidence.

PERFECT FOR

Rationa is useful for parties and gatherings, weddings and large events, birthdays and family celebrations, barbecues and outdoor events, New Year’s parties, and anyone who wants to plan food and drinks more efficiently.

PREMIUM FEATURES

Upgrade for more advanced event planning tools, including detailed food and drink breakdowns, personalized consumption profiles, time and season adjustments, advanced planning controls, and flexible safety margins.

Rationa makes event planning simpler, faster, and more predictable.

Start planning smarter, spend less, and waste less with Rationa.

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