✦ 38 Free Tools — No Sign-up Required

The smarter way to
calculate anything

Instant free calculators for health, finance, kitchen, lifestyle, business and eco planning. No accounts, no fluff.

🔍
38 Free Tools
7 Categories
100% Free Forever
0 Sign-ups
🇦🇺 AU-Focused

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Health & Body

9 tools
⚖️
BMI Calculator
Body mass index with healthy weight range
Metric & ImperialWHO Standard
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Calorie Calculator
Daily intake, BMR, TDEE and macro split
Mifflin-St JeorMacros
🤱
Pregnancy Calculator
Week tracker, trimester and milestones
Week by WeekTrimesters
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Ovulation Calculator
Fertile window and cycle tracking
Fertile WindowCycle Tracking
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Due Date Calculator
Estimate your baby's arrival date
LMP MethodConception Date
😴
Sleep Cycle Calculator
Best bedtime and wake-up times
Sleep CyclesWake-up Times
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Water Intake Calculator
Daily hydration target by weight
By WeightActivity Level
📅
Period Calculator
Predict your next 3 periods
Cycle TrackingFertile Window
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Kids Growth Calculator
Height and weight percentile chart
WHO PercentilesGrowth Tracking
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Finance & Money

12 tools
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Loan Calculator
Monthly repayments and total interest
Monthly PaymentTotal Interest
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Mortgage Calculator
Repayments, LVR and extra payments
LVRExtra Repayments
🧾
Tax Calculator
AU, UK and US income tax
AU / UK / USMedicare Levy
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Pay Calculator
Hourly to annual salary conversion
Hourly to AnnualAll Periods
🛡️
Insurance Calculator
Life, car and home coverage estimator
Life / Car / HomeCoverage Guide
🏘️
Rent Affordability
AU rental stress and 30% rule
30% RuleAU Thresholds
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Electricity Calculator
Running cost of any appliance (AU)
AU RatesAny Appliance
🦘
Australian Tax Calculator
ATO-aligned FY2024-25 with LITO
ATO 2024-25LITO + Medicare
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BAS & GST Calculator
Quarterly BAS for sole traders
Quarterly BASITC Claims
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HECS-HELP Calculator
FY2024-25 repayment thresholds
HECS ThresholdsIndexation
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Superannuation Calculator
Project super balance at retirement
CompoundingAU Super Rules
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Cost of Living Calculator
Weekly budget planner for Australians
Budget PlannerAU Living Costs
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Kitchen

2 tools
🍳
Air Fryer Calculator
Convert oven temps and cooking times
Temp ConversionCooking Times
🥚
Boiled Egg Calculator
Perfect timing by size and doneness
By Egg SizeAltitude Adjusted
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Lifestyle & Dates

6 tools
🎂
Age Calculator
Exact age and birthday countdown
Exact AgeBirthday Countdown
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Date Calculator
Add or subtract days from any date
Add / Subtract DaysWorking Days
⛽
Fuel Cost Calculator
Trip and monthly fuel costs (AU)
AU Fuel PricesPer Trip
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Tip Calculator
Split bills with custom tip
Bill SplitCustom Tip %
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Screen Time Calculator
Daily and weekly usage tracker
Daily TrackingWeekly Summary
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Concrete Calculator
Slabs, posts and footings (AU)
Slabs & PostsAU Measurements
📊

Business & Creator

6 tools
📊
Percentage Calculator
% of, % change and % difference
% Change% Difference
🔬
Scientific Calculator
Full function with history
Scientific FunctionsHistory
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Etsy Fee Calculator
Profit margin and pricing tool
Etsy Fees 2024Profit Margin
💼
Freelancer Calculator
Hourly rate with AU tax and super
AU Tax IncludedSuper + Expenses
💹
Freelancer Rate Calculator
Full cost-of-business analysis
Full Cost AnalysisDay Rate Guide
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Digital Product Calculator
Gumroad, Etsy and Redbubble margins
Gumroad / EtsyCreator Margins
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Eco & Sustainability

3 tools
🌧️
Rainwater Calculator
AU roof collection and tank sizing
AU Rainfall DataTank Sizing
☀️
Solar & Battery Calculator
Off-grid system sizing for Australia
Off-Grid SizingAU Sun Hours
🌳
Food Forest Estimator
Plant spacing and annual yield
Plant SpacingAnnual Yield

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