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Percentage calculator
Find a percentage of a number.
All calculators
20 calculators↗
Percentage change calculator
Compare an old and new value.
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Discount calculator
Calculate the sale price after a discount.
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Tip calculator
Calculate tip and bill total.
€
Sales tax calculator
Add tax to a price.
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Simple interest calculator
Estimate simple interest.
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Compound interest calculator
Estimate compound growth.
€
Loan payment calculator
Estimate monthly loan payments.
◎
Savings goal calculator
Calculate monthly savings needed.
♡
BMI calculator
Calculate body mass index.
◷
Age calculator
Calculate age from date of birth.
▦
Date difference calculator
Count days between two dates.
→
Days from today calculator
Days until or since a date.
x̄
Average calculator
Find the average of a list of numbers.
÷
Ratio simplifier calculator
Simplify a ratio to lowest terms.
½
Fraction to decimal calculator
Convert a fraction to a decimal.
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Rectangle calculator
Calculate rectangle area and perimeter.
○
Circle calculator
Calculate circle area and circumference.
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Speed calculator
Calculate average speed.
⛽
Fuel cost calculator
Estimate fuel required and trip cost.
Results are estimates for general information. For important financial or health decisions, consult a qualified professional.
Calculator guide
Choose a calculator, enter your figures and select Calculate. Financial outputs use the currency you select; other calculations use the units shown beside each input. Results are estimates and should be checked before making financial, health or engineering decisions.
Frequently asked questions
How do I use an online calculator?
Choose the calculation you need, enter values in the labelled fields, select any available options and press Calculate. The result appears below the calculator.
Can I change the currency?
Yes. Financial calculators include a currency selector. Choose the currency that matches the amounts you enter; Toolora does not convert exchange rates.
Are calculator results guaranteed?
No. Results depend on the values and assumptions entered. Use them as estimates and verify important financial, medical or technical decisions with an appropriate professional.