BoringTools
FunTools
87+ free Australian calculators

Small tools for
life’s boring problems.

Free calculators for everyday Australian life — money, work, home, cars, food and more. No signup, no jargon, just clear answers.

FastFree, alwaysNo signupBuilt for Australia

Popular calculators

Fuel Trip Cost

Work out how much fuel a trip will cost, and split it between passengers.

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Compound Interest

See how your savings could grow over time with compound interest.

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Mortgage Repayment

Work out your monthly, fortnightly or weekly mortgage repayment.

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Contractor vs Permanent

Compare a day-rate contract against a permanent package, leave and super included.

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Currency Converter

Convert between currencies using up-to-date exchange rates.

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Paint Calculator

Work out how many litres of paint you need for a room, including a practical can list.

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Car Cost of Ownership

Add up fuel, servicing, insurance and depreciation to see your car's true total cost.

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Profit Margin

Work out your profit and margin percentage from cost and selling price.

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Categories

Work & Salary

Simple calculators for salary, leave, contracting and leaving a job.

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Money

Simple calculators for loans, savings and everyday money questions.

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Date & Time

Simple calculators for counting days, tracking deadlines and working out ages.

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Measurements

Simple converters for clothing and shoe sizes, cooking measurements and everyday units.

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Food & Entertaining

Simple calculators for BBQs, parties, recipes and the kitchen.

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Home & Energy

Simple calculators for appliance running costs, solar payback and renovation quantities.

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Vehicles

Simple calculators for fuel costs, EV comparisons and vehicle running costs.

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Family & Pets

Simple calculators for pocket money, family budgets and looking after the pets.

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Tech & Digital

Simple calculators for subscriptions, downloads, screen time and device storage.

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DIY & Renovation

Simple calculators for paint, concrete and other renovation material quantities.

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Small Business

Simple calculators for margin, markup and break-even pricing decisions.

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Everyday Maths

Simple calculators for comparing prices and everyday number problems.

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Why BoringTools?

FastGet an answer in seconds, not a form to submit.
FreeEvery calculator is free, with no account required.
No signupNothing to create, nothing to remember.
Australian-friendlyAUD, DD/MM/YYYY, and Australian pay conventions.
Clear assumptionsEvery result explains exactly how it was worked out.