An online percentage calculator will help you quickly calculate the percentage of a number, find out the percentage, increase or decrease a number by a percentage.
An online percentage calculator will help you quickly calculate the percentage of a number, find out the percentage, increase or decrease a number by a percentage.
Calculate what percentage one number is of another
Council:
An online percentage calculator helps you calculate the percentage of a number, find out the percentage and change the number to a given percentage. Suitable for calculating discounts, taxes, profits and other everyday tasks.
Let's look at practical examples of using the interest calculator for various tasks:
Find 20% of the number 500
Result: 100
25 is what percentage of 200?
Result: 12.5%
If 15% is 30, find the original number
Result: 200
Increase 1000 by 15%
Result: 1150
Decrease 800 by 10%
Result: 720
Product price 2000₽, 20% discount, then 18% tax
Final price: 1888₽
The calculator uses standard formulas for calculating percentages: percentage of number (number × percentage ÷ 100), percentage (part ÷ whole × 100), increase/decrease by percentage (number ± number × percentage ÷ 100).
Results are calculated automatically as you enter data
4 different types of interest calculations in one calculator
Accurate calculations with decimal support
Responsive design for easy use on all devices
Fast and accurate interest calculations, simple interface, support for various types of calculations, multilingual, free to use.
Use the Enter key for quick calculations, check that numbers are entered correctly, and use a dot for decimals.
To calculate the percentage of a number, use the formula: number × percentage ÷ 100. For example, 20% of 500 = 500 × 20 ÷ 100 = 100.
To find the percentage, use the formula: (smaller number ÷ larger number) × 100%. For example, 25 of 200 = (25 ÷ 200) × 100% = 12.5%.
To increase a number by a percentage, use the formula: number + (number × percentage ÷ 100). For example, increase 1000 by 15% = 1000 + (1000 × 15 ÷ 100) = 1150.
To decrease a number by a percentage, use the formula: number - (number × percentage ÷ 100). For example, reduce 800 by 10% = 800 - (800 × 10 ÷ 100) = 720.
To find the original number, use the formula: result ÷ (percentage ÷ 100). For example, if 15% is 30, then the original number = 30 ÷ 0.15 = 200.
Yes, the calculator is great for calculating discounts. Use the 'decrease by percentage' mode to calculate the discounted price.
To calculate tax, use the 'increase by percentage' mode. For example, for VAT 20%: price + 20% = price with tax.
Yes, use the 'percentage' mode to calculate profitability. For example, a profit of 50,000 rubles from a turnover of 200,000 rubles = 25%.
The calculator supports decimal percentages. For example, 12.5% of 1000 = 1000 × 12.5 ÷ 100 = 125.
For compound interest, use the calculator step by step: first calculate the percentage of the amount, then add it to the original amount.
Use the 'percentage ratio' mode: actual result ÷ planned indicator × 100%. For example, plan 1000, fact 850 = 85%.
Yes, the calculator is suitable for calculating simple interest on a loan. For compound interest, a specialized loan calculator is recommended.
To calculate percentage growth, use the formula: ((new value - old value) ÷ old value) × 100%. For example, growth from 100 to 120 = 20%.
Yes, first calculate the amount with tax (increase by percentage), then find the percentage of this amount.
Negative percentages mean decrease. Use the 'reduce by percentage' mode with a positive percentage value.
Yes, the calculator is suitable for calculating income taxes, pension contributions and other salary deductions.
Use the 'percentage of number' mode to calculate interest on the deposit. For example, 5% per annum from 100,000₽ = 5,000₽ per year.
Yes, the calculator is suitable for calculating trade margins, discounts, taxes and other transactions with goods.
Use the 'percentage of number' mode to calculate a fraction of the area. For example, 30% of 100 m² = 30 m².
Yes, the calculator is suitable for calculating percentage of time. For example, 25% of 8 hours = 2 hours.
Use the 'percentage of number' mode to calculate part of the volume. For example, 15% of 1000 liters = 150 liters.
Yes, the calculator is suitable for calculating percentage of weight. For example, 10% of 50 kg = 5 kg.
Use the 'percentage of number' mode to calculate a portion of a quantity. For example, 20% of 100 pieces = 20 pieces.
Yes, the calculator is suitable for calculating discounts, taxes, tips and other operations with the order amount.
Use the calculator to calculate taxes, discounts, commissions and other operations with the cost of services.
Yes, the calculator is suitable for calculating taxes, contributions, alimony and other deductions from income.
Use the calculator to calculate portions of expenses, savings, overspending and other expense transactions.
Yes, the calculator is suitable for calculating investment returns, losses, commissions and other investment transactions.
Use the calculator to calculate part of turnover, margin, profitability and other business indicators.
Yes, the calculator is suitable for calculating taxes on revenue, commissions, reserves and other transactions with revenue.