Free online calculators that just work
Calculat.ca gathers fast, accurate calculators for everyday questions: homework, health, work hours, shopping and home projects. No sign-up, no ads in the way of the answer, and every result is explained.
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Try the unit converter without leaving this page:
School and math
Fraction calculatorAdd, subtract, multiply and divide fractions and mixed numbersGPA calculatorWeighted GPA on a 4.0 or 4.3 scaleFinal grade calculatorWhat you need on the final examAverage calculatorMean, median, mode and standard deviationPercentage calculatorPercent of a number, percent change, increase and decrease
Money and finance
Mortgage calculatorCanadian payments, CMHC insurance and accelerated optionsLoan calculatorCar and personal loan payments and total interestCompound interestSavings growth with monthly contributions (TFSA, RRSP)Hourly to salaryConvert wage to yearly, monthly, bi-weekly paySales tax calculatorAdd or remove GST, HST, PST and QST
Health and dates
BMI calculatorBody mass index and healthy weight rangeCalorie calculatorDaily calories to maintain, lose or gain weightPregnancy due dateDue date, current week and trimestersAge calculatorExact age in years, months and daysDays between datesCount days and business days, add or subtract days
Work, shopping and home
Hours worked calculatorWeekly time card with breaks and overtimeDiscount calculatorSale price, savings and sales taxTip calculatorTip, sales tax and split the billSquare footage calculatorRoom area, waste allowance and material costUnit converterMetric and imperial: length, weight, temperature and more
Guides and explanations
Every calculator comes with a plain-language guide. Start with how to add and subtract fractions, how to calculate your GPA, how many calories you should eat or how to measure square footage. Browse all articles.
Why Calculat.ca?
- Accurate: formulas are documented on every page so you can check the math.
- Private: calculations run in your browser; we do not store what you type.
- Made for Canada and the world: metric and imperial units, Canadian sales tax and provincial overtime rules are built in.
- Free forever: no account, no paywall.
FAQ
Are the calculators free?
Yes, every tool on Calculat.ca is free to use as often as you like.
Do they work on phones?
Yes. All calculators are designed for mobile first and update as you type.
Can I suggest a new calculator?
Please send us your idea. New tools are added every week.