Every ToolNly tool is a separate page, so you can bookmark it, share it and come straight back to it — all 41 tools are live and free to use.
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Salary After Tax Calculator
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Work out your take-home pay after federal tax, state tax, Social Security and Medicare in the USA.
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Mortgage Calculator
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Work out your monthly mortgage payment, interest and total cost from the loan amount, rate and term.
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Hourly to Salary Calculator
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Convert an hourly rate to an annual, monthly or weekly salary — and a salary back to an hourly rate.
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Auto Loan Calculator
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Work out your monthly car payment, total interest and total cost — with your trade-in included.
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Rent vs Buy Calculator
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Compare the true monthly and long-term cost of owning a home versus renting, side by side.
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Retirement & 401(k) Calculator
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See how your 401(k) could grow to 65 — balance, contributions, employer match and returns.
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Credit Card Payoff Calculator
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Find out how long it will take to clear your card and how much interest you’ll pay.
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BMI Calculator
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Check your body mass index from your height and weight, in metric or imperial units.
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GPA Calculator
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Work out your grade point average from your courses, credits and grades.
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Tip Calculator
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Split a bill fairly, work out a tip by percentage and see what each person pays.
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Unit Converter
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Convert miles to km, pounds to kg, Fahrenheit to Celsius and more — instantly.
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UK Salary After Tax Calculator
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Work out your UK take-home pay for 2026/27 after income tax and National Insurance.
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Canada Income Tax Calculator
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Calculate your Canadian take-home pay for 2026 after federal and provincial income tax.
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UK Stamp Duty Calculator
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Work out how much Stamp Duty (SDLT) you’ll pay when buying a home in England or Northern Ireland.
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Canada Land Transfer Tax Calculator
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Calculate Ontario land transfer tax — and the Toronto municipal tax — on a home purchase, including first-time buyer rebates.
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UK Mortgage Calculator
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Work out your monthly UK mortgage repayment, total interest and total cost from the loan amount, rate and term.
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Canada Mortgage Calculator
✅ Live now
Work out your monthly Canadian mortgage payment from the home price, down payment, rate and amortization.
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Canada GST/HST Calculator
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Work out GST/HST on any amount for Ontario, BC, Alberta and every province.
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UK Pension Calculator
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See how your UK pension pot could grow to retirement — contributions, growth and projected pot.
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Canada RRSP Calculator
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See how your RRSP could grow to retirement — contributions, growth and projected value.
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1099 Tax Calculator
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Estimate self-employment and federal income tax on 1099 freelance income — see total tax, quarterly payments and take-home pay.
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Compound Interest Calculator
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See how your savings grow over time with monthly contributions and compound interest.
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Budget Calculator
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Split your monthly income into needs, wants and savings with the 50/30/20 budget rule.
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Home Affordability Calculator
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Find the maximum home price you can afford from your income, debts, down payment and mortgage rate.
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Student Loan Calculator
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Work out your monthly student loan payment, total paid and interest over the life of the loan.
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Percentage Calculator
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Find a percent of a number, what percent one number is of another, and percent increase or decrease.
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Calorie Calculator
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Find your BMR and daily calorie needs (TDEE) for weight loss, maintenance or weight gain.
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Date Calculator
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Count the days between two dates, add or subtract days, or work out your exact age.
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Fuel Cost Calculator
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Work out how much fuel a trip needs and what it will cost from distance, MPG and gas price.
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Discount Calculator
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Work out the sale price, how much you save and the final total with tax from any price and discount.
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Overtime Pay Calculator
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Work out your overtime pay at time and a half or double time from your hourly rate and hours worked.
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PTO Calculator
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Work out how much paid time off you have earned, what is left, and what it is worth if you cash it in.
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Timesheet Calculator
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Add up your weekly hours from start and finish times and breaks — with overtime and gross pay.
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Sales Tax Calculator
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Work out the sales tax and total price on any purchase, by state rate or any rate you enter.
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Subscription Cost Calculator
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Add up all your monthly subscriptions and see what they cost you each month and over a year.
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Sleep Calculator
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Find the best bedtime for your wake-up time using 90-minute sleep cycles — wake up refreshed.
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Debt Snowball Calculator
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Compare the debt snowball and avalanche methods and see which clears your debts faster and cheaper.
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Emergency Fund Calculator
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Work out the emergency fund you need, how far you have got, and how long it will take to reach it.
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Lease vs Buy Car Calculator
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Compare leasing and buying a car side by side — monthly payment and total cost over three years.
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Due Date Calculator
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Work out your baby’s due date from your last period and see how far along you are.