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See all →Can I Swap Renting for Home Ownership?
Enter savings, rent & house price. Shows stamp duty, repayments vs rent, and if you can make the jump.
Rent vs Buy Calculator
Compare renting vs buying over 1–10 years. Uses CBA & Westpac city forecasts.
PropertyStamp Duty Calculator
All states & territories. First home buyer exemptions included.
PropertyRental Yield Calculator
Gross and net yield. See if the numbers stack up before you buy.
PropertyLMI Calculator
Find out if you'll pay Lenders Mortgage Insurance and exactly how much.
PropertyBorrowing Capacity
Estimate how much a bank will lend you based on income, debts, and living costs.
PropertyMortgage Repayment
Monthly repayments, total interest, and how extra payments save you money.
PropertyRefinance Calculator
See if refinancing could save you money. Compare rates and calculate potential savings.
PropertyRate Rise Impact
See how much your mortgage goes up if the RBA raises rates.
FinanceOffset Mortgage Calculator
See how much your offset account saves in interest and years off your loan.
PropertyCapital Gains Tax
CGT on property or investments. Includes the 50% discount for 12+ months.
PropertyNegative Gearing Calculator
Tax benefits and cash flow from negatively gearing an investment property. Real costs after tax refund.
PropertyLand Tax Calculator
All Australian states and territories: VIC, NSW, QLD, WA, SA, TAS, ACT and NT. Updated April 2026 rates.
PropertyHome Loan Rates 2026
Fixed vs variable rates compared. How RBA changes affect your mortgage. What to look for when comparing.
PropertyBest Home Loan Guide
How to find the right mortgage. Compare offset accounts, fees, features and flexibility.
PropertyIncome Tax Calculator
2025–26 tax, Medicare levy, LITO, HECS. See your real take-home pay.
FinanceChild Care Subsidy Calculator
Calculate your CCS percentage, out-of-pocket costs and subsidy eligibility.
FinancePay Calculator
Convert hourly, daily, weekly, monthly or annual pay, gross and take-home.
FinanceHECS/HELP Repayment
Annual repayment, years to pay off, and full threshold table.
FinanceFair Work Pay Guide
National minimum wage, casual loading, overtime rates. Calculate your weekly pay.
FinanceSuperannuation Calculator
Project your super balance at retirement. Are you on track?
FinanceCompound Interest
Watch your savings grow. Includes regular deposits and Australian bank rates.
FinanceLoan Repayment
Personal or any loan. Monthly repayments and total interest paid.
FinanceCar Finance Calculator
Monthly repayments with optional balloon payment. Total cost breakdown.
FinanceNovated Lease (EV)
Simple calculator for electric vehicle novated leases. Take-home pay impact and balloon payment.
FinanceSavings Goal Calculator
How long until you hit your savings target? Find out in seconds.
FinanceSavings Budget Calc
Track income vs recurring costs, then push rent + savings into a loan size estimate.
FinanceFuel Cost Calculator
Cost per trip, per week, per year. See savings with a more efficient car.
FinanceSolar STC Calculator
Estimate your solar panel rebate. How many STCs does your system earn?
FinanceSplit Bill Calculator
Split any bill equally or by custom amounts. Per-person breakdown instantly.
FinanceRedundancy Pay Calculator
Calculate your redundancy entitlement under Fair Work rules. Notice period and severance pay.
FinancePAYG Withholding Calculator
How much tax to withhold from employee wages. For employers and contractors. 2025-26 tables.
FinanceAnnual Leave Payout
Calculate your leave payout when you resign. Includes 17.5% leave loading.
FinanceFIRE Number Calculator
How much to retire early? Based on the 4% withdrawal rule.
FinanceConcrete Calculator
Cubic metres, premix bags, and cost for slabs, footings, and steps. Includes wastage.
ConstructionPaint Coverage Calculator
Litres needed for any room. Doors, windows, ceiling, coats, and tin size recommendations.
ConstructionFlooring Area Calculator
Rectangle, L-shape, or multiple rooms. Wastage for straight, diagonal, or herringbone lay.
ConstructionTile Calculator
Tiles, boxes, grout estimate, and cost. Supports all tile sizes and custom grout gaps.
ConstructionSolar Savings Calculator
Annual bill savings from rooftop solar. State-specific sun hours, self-consumption, and payback period.
ConstructionTimber & Decking Calculator
Boards, lineal metres, volume, and weight for any deck or timber floor project.
ConstructionBrick & Block Calculator
Bricks or concrete blocks, mortar bags, and pallets. Standard Australian brick sizes.
ConstructionFence Calculator
Posts, rails, sheets, and palings for Colorbond, timber paling, and pool fencing.
ConstructionSoil & Mulch Calculator
Cubic metres and bags for garden beds, mulch, compost, or lawn topdressing. Includes wastage.
ConstructionBMI Calculator
Body Mass Index and healthy weight range. Metric and imperial.
HealthBMR Calculator
Basal Metabolic Rate: calories your body burns at rest. Two formulas compared.
HealthTDEE Calculator
Total daily energy expenditure and calorie targets for lose/maintain/gain.
HealthCalorie Calculator
Calculate daily calorie needs for weight loss, maintenance or muscle gain with macro breakdown.
HealthRunning Pace Calculator
Pace to time, time to pace, or distance in X time. Splits every 5km.
HealthSurfboard Volume Calculator
Find your ideal surfboard volume based on weight, skill level, wave type and fitness.
HealthBra Size Calculator
AU/UK bra size from measurements. US conversion and size chart.
HealthDue Date Calculator
Pregnancy due date, current week, trimester, and key milestones.
HealthDog Chocolate Toxicity Calculator
Check if your dog ate toxic chocolate. Calculate theobromine risk by weight and chocolate type.
HealthOvulation Calculator
Track your fertile window, ovulation date and next period prediction.
HealthBAC Calculator
Estimate blood alcohol level and when you're safe to drive under 0.05.
HealthStandard Drinks Calculator
Calculate Australian standard drinks, BAC estimate and calories in beer, wine or spirits.
HealthBody Fat Calculator
Estimate body fat percentage using the US Navy method.
HealthHeight Comparison
See how your height compares to average heights around the world.
HealthSleep Cycle Calculator
Find the best time to wake up or sleep based on 90-minute sleep cycles.
HealthDog Years Calculator
Calculate your dog's age in human years (accurate, breed size matters).
Just For FunPizza Party Calculator
How many pizzas do you need? Never run out (or over-order) again.
Just For FunPet Ownership Cost
Can you afford a dog or cat? Calculate the real monthly cost.
FinanceTyping Speed Test
Test your typing speed (WPM) and accuracy in 60 seconds.
Just For FunRetirement Countdown
Days, hours, minutes until freedom. Shareable link included.
Just For FunBirth Chart Calculator
Calculate your astrology birth chart. Sun sign, moon sign, rising sign and planetary positions.
Just For FunChinese Zodiac Calculator
Find your Chinese zodiac animal, element and compatibility based on birth year.
Just For FunCommute Cost Calculator
Fuel, tolls, parking, wear & tear, and the value of your time.
FinanceName Popularity
How common is your name in Australia? Top 20 names by year.
Just For FunQuit Smoking Savings
See how much you'd save by quitting. Australian cigarette prices.
FinanceQuit Drinking Savings
Calculate savings from cutting back or quitting alcohol entirely.
FinanceCoffee Savings
Daily flat white habit vs home brew. The numbers might shock you.
FinancePercentage Calculator
What is X% of Y? X is what % of Y? Three modes, instant answers.
MathsPercentage Change
Increase, decrease, or work backwards. What % did that change by?
MathsFraction Calculator
Simplify fractions and do arithmetic with them. Shows working steps.
MathsGPA Calculator
Australian and US GPA. Weighted by credit points.
MathsSubnet Calculator
IPv4 subnet calculator. Network address, broadcast, host range from CIDR or mask.
MathsScientific Calculator
Full scientific calculator with trigonometry, logarithms, exponents and calculation history.
MathsAge Calculator
Exact age in years, months and days. Days until your next birthday.
TimeDate Difference
Days, weeks, months or years between any two dates. Excludes weekends option.
TimeTimezone Converter
All Australian timezones + major world cities. Live updating clock.
TimeBest Time to Call
Find when you're both awake. No more 3am calls to mum in the UK.
TimeCountdown Timer
Count down to any date. Live days, hours, minutes, seconds.
TimeDays Calculator
Add or subtract days, weeks, months, or years from any date.
TimeShoe Size Converter
AU, US, UK, EU sizes for men, women and kids. Full size chart included.
ConverterUnit Converter
Temperature, weight, length, and area. Converts both directions in real time.
ConverterExchange Rate Converter
Live AUD exchange rates. Convert any amount between major world currencies.
ConverterCryptocurrency Converter
Live crypto prices in AUD. Convert BTC, ETH, SOL and more with real-time rates.
ConverterNEWTyre Size Calculator
Compare tyre sizes, speedometer error, and decode what 205/55R16 means.
ConverterEV Charging Cost Calculator
Calculate the cost to charge your EV at home or public stations
EVEV vs Petrol Running Cost
Compare annual running costs of electric vs petrol vehicles
EVEV Range Calculator
Estimate real-world EV range based on driving conditions
EVHome Charger Payback
Calculate when your home EV charger pays for itself
EVEV Road Trip Cost
Plan your EV road trip charging stops and costs
EVEV Solar Charging
See how much you save charging your EV with solar
EVEV Battery Health
Monitor and estimate your EV battery degradation
EVEV FBT Calculator
Calculate fringe benefits tax savings for electric vehicles
EVEmergency Food Calculator
Calculate how much food to stockpile for emergencies
PreparednessWater Storage Calculator
Plan your emergency water storage needs
PreparednessFuel Stockpile Calculator
Calculate fuel storage for generators and vehicles
PreparednessCost of Living Crisis
Model the impact of inflation and rising costs on your budget
PreparednessBlackout Prep Calculator
Prepare for power outages with equipment and supply planning
PreparednessSurvival Garden Planner
Plan a garden to supplement your food supply
Self-SufficiencyVegetable Garden Planner
Plan your vegetable garden with Australian climate zones, planting calendars and expected yields.
Self-SufficiencyEgg Calculator
How many chickens do you need for your egg consumption?
Self-SufficiencyPepper Plant Calculator
How many pepper plants to grow for your household
Self-SufficiencyGST Calculator
Add or remove GST (10%) from any amount. For invoices and quotes.
FinancePostage Calculator
Estimate Australia Post postage costs by weight, size and delivery speed.
AustralianWorking Holiday Visa Tax
417/462 visa holders pay 15% on first $45k. See your take-home pay.
FinanceLotto Odds Calculator
Oz Lotto, Powerball, Set for Life. Spoiler: you're not going to win.
Just For FunCanberra Matrix Calculator
Score your ACT skilled migration points for subclass 190/491 nomination.
AustralianCitizenship Practice Test
Practice for the Australian Citizenship Test. 20 questions, 75% to pass. Timed like the real thing.
AustralianWhat NBN Speed Do I Need?
Answer simple questions about your household and get a speed recommendation: NBN 25, 50, 100, 250, or 1000.
AustralianGreen Slip Calculator
Estimate NSW CTP Green Slip insurance costs. Compare providers and find the best rate.
AustralianSmartKoala is a free collection of tools built for Australians. No sign-up, just useful calculators that work. We use privacy-respecting analytics and a small number of cookies to improve the site. More tools added regularly. For advertising enquiries: hello@smartkoala.app 🐨