Other Tools
CalculatorQuest is mainly about Australian pay, tax, super and property. These 52 calculators cover everything else: health and fitness, dates and ages, maths and study, home projects, and energy and unit conversions.
Looking for money calculators? Start with the Australian pay calculator or browse all finance calculators by category.
Health & Fitness
These give general estimates from standard formulas and the details you enter. They are not medical advice, so check anything important with a GP or other health professional.
- BMI Calculator for WomenCalculate Body Mass Index with ideal weight range and personalised health recommendations.
- Calorie CalculatorCalculate daily calorie needs based on age, weight, height, and activity level.
- Macro CalculatorCalculate your daily protein, carbohydrate, and fat requirements.
- TDEE CalculatorCalculate Total Daily Energy Expenditure for weight management.
- Body Fat CalculatorEstimate body fat percentage using measurements and multiple formulas.
- Heart Rate Zone CalculatorCalculate training heart rate zones for optimal cardio and fat burning.
- Weight Loss CalculatorCalculate how long it takes to reach your target weight with calorie deficit planning.
- Life Expectancy CalculatorEstimate life expectancy based on lifestyle factors and health indicators.
- Biological Age CalculatorEstimate your biological age based on lifestyle and health metrics.
- Gestational Age CalculatorCalculate gestational age and estimate due date during pregnancy.
- Period CalculatorPredict your next period, ovulation date, and fertile window. 6-month cycle forecast.
- Pregnancy Due Date CalculatorCalculate estimated due date from last period, conception date, or ultrasound. Shows milestones.
Date & Time
Count days between dates, add or subtract time, work out ages and convert timesheet hours to decimals.
- Age CalculatorCalculate exact age in years, months, days from any date of birth.
- Date CalculatorAdd or subtract days, weeks, months, and years from any date.
- Date to Date CalculatorCalculate the exact number of days, weeks, and months between two dates.
- Days CalculatorCalculate the number of days between dates or add/subtract days from a date.
- Day CounterCount the number of days until or since a specific date.
- Business Day CalculatorCalculate business days between dates, excluding weekends and public holidays.
- Birthday CalculatorFind out what day of the week you were born and your next birthday.
- Date of Birth CalculatorCalculate date of birth from age, or find age milestones and zodiac sign.
- Age Between Dates CalculatorCalculate the precise age difference between any two dates.
- Time CalculatorAdd, subtract, multiply, and divide time values (hours, minutes, seconds).
- Time to Decimal CalculatorConvert hours and minutes to decimal format for timesheets and payroll.
- Puppy Age CalculatorConvert your dog's age to human years with breed-specific calculations.
- Lunar Age CalculatorCalculate your age according to the Chinese lunar calendar.
Maths & Education
Everyday arithmetic, fractions, percentages and ratios, plus grade and GPA tools for students.
- Scientific CalculatorAdvanced mathematical calculations with trigonometric, logarithmic, and scientific functions.
- Basic CalculatorSimple addition, subtraction, multiplication, and division calculator.
- Percentage CalculatorCalculate percentages, percentage changes, increases, and decreases.
- Fraction CalculatorAdd, subtract, multiply, and divide fractions with step-by-step solutions.
- Ratio CalculatorSolve ratios, proportions, and scale factors with visual representations.
- Math CalculatorEvaluate mathematical expressions with order of operations support.
- Weighted Average CalculatorCalculate weighted averages for grades, scores, and data sets.
- Binary CalculatorConvert between binary, decimal, hexadecimal, and octal number systems.
- GPA CalculatorCalculate your Grade Point Average with Australian and international grading scales.
- Grading CalculatorCalculate grades, weighted scores, and final exam requirements.
Construction & Home
Rough quantities for home projects. Suppliers often recommend ordering a little extra, so confirm amounts with them before you buy.
- Concrete CalculatorCalculate concrete volume needed for slabs, footings, columns, and stairs.
- Paint CalculatorCalculate how much paint you need for walls, ceilings, and trim.
- Stair CalculatorCalculate stair dimensions including rise, run, and total stringer length.
- Roof Pitch CalculatorCalculate roof pitch angle, slope ratio, and rafter length.
- Gravel CalculatorCalculate gravel volume and weight needed for driveways and landscaping.
- Mulch CalculatorCalculate mulch volume needed for garden beds and landscaping projects.
- Area CalculatorCalculate area for squares, rectangles, circles, triangles, and irregular shapes.
- Volume CalculatorCalculate volume for cubes, cylinders, spheres, cones, and other 3D shapes.
Energy & Conversions
Electrical conversions, running-cost estimates and general unit and currency conversions.
- Electricity Cost CalculatorCalculate electricity usage costs based on wattage, hours, and tariff rates.
- kWh CalculatorConvert between watts, kilowatts, and kilowatt-hours for energy usage.
- Watts to Amps CalculatorConvert between watts, amps, and volts for electrical circuits.
- kVA to Amps CalculatorConvert kVA to amps for single-phase and three-phase electrical systems.
- Power CalculatorCalculate electrical power, voltage, current, and resistance using Ohm's law.
- Water Volume CalculatorCalculate water volume for tanks, pools, ponds, and irrigation systems.
- Speed CalculatorCalculate speed, distance, or time using the speed-distance-time formula.
- Unit ConverterConvert between units of length, weight, temperature, time, and volume.
- Currency ConverterConvert between currencies with real-time exchange rates.