Percentage Calculator
Find percentages, increases and decreases.
How to use Percentage Calculator
follow along with the steps below
1Open the tool on this page and add two numbers.
2Adjust the options if you need to. Results update right on the page.
3Copy or download the percentage result. Nothing is uploaded, so you can repeat as often as you like.
About Percentage Calculator
Percentage Calculator is a free online tool from Supreme Pro. Find percentages, increases and decreases. It runs in your browser, so there is nothing to install and no account to create. Calculators update as you type, so you can explore numbers freely.
Common uses
- Get a fast answer without opening a spreadsheet
- Compare different scenarios by changing one number at a time
- Double-check figures before you make a decision
Tips for best results
- Enter realistic values and change one field at a time
- Treat finance and health results as estimates, not professional advice
- Use consistent units, for example all amounts in the same currency
Features
- Lets you work out percentages, increases and decreases
- Free to use, no account or sign-up
- Private — runs entirely in your browser
- Works on phones, tablets and computers
Practical tips
Percentages are easiest to check by asking whether the answer is sensible: 10% of a number is one tenth, 50% is half. Note that a 20% rise followed by a 20% drop does not return you to the start, because the second change applies to a larger number. Use the right mode for discounts, increases and part-of-whole questions.
More free tools
CalculatorA fully working premium calculator.
Age CalculatorYour exact age and days to your next birthday.
BMI CalculatorBody mass index with a simple explanation.
Unit ConverterLength, weight, temperature, data and time.
Time Zone ConverterCompare times across countries instantly.
QR Code GeneratorTurn text or a link into a downloadable QR code.Frequently Asked Questions about Percentage Calculator
Quick answers about using Percentage Calculator.
What is the Percentage Calculator?
The Percentage Calculator is a free online tool from Supreme Pro. Find percentages, increases and decreases. You can use it to work out percentages, increases and decreases.
How do I use the Percentage Calculator?
Open this page, add two numbers in the tool above, adjust any options you want and read or download the percentage result. Everything happens on the same page, so there is nothing to install.
Is the Percentage Calculator free?
Yes. The Percentage Calculator is free to use and does not need an account or sign-up.
Is my data safe when I use the Percentage Calculator?
Yes. The tool runs in your browser, so anything you add — such as two numbers — is processed on your own device rather than being sent to our servers.
Does the Percentage Calculator work on mobile phones?
Yes. The page is responsive and works in modern browsers on phones, tablets and computers.
Can I use the Percentage Calculator offline?
Once you have opened this page, your browser can often reload it without a connection because Supreme Pro saves its core files for offline use. Open it once while online first.
How accurate are the results?
Results are calculated from the values you enter using standard methods. For important financial, health or legal decisions, double-check the figures with a qualified professional.
How do I find what percent one number is of another?
Divide the first number by the second and multiply by 100.
Why does a 50% increase then a 50% decrease not cancel out?
Because the decrease is taken from the new, larger amount, so you end up below where you began.
Related tools
Percentage Change CalculatorPercent increase or decrease between two values.
Loan / EMI CalculatorMonthly installment, total payment and interest.
Discount CalculatorFinal price and savings after discount and tax.CalculatorA fully working premium calculator.
Tip & Split CalculatorSplit a bill between friends with tip included.BMI CalculatorBody mass index with a simple explanation.Why people choose Supreme Pro
