Frequently Asked Questions

Divide the percentage by 100, then multiply by the number. For example, 20% of 200 is 0.20 × 200 = 40.

Divide the value by the total and multiply by 100. For example, 25 divided by 200 equals 12.5%.

Yes. Flux Calculator includes focused tools for percentage change, discounts, markup, margins, tips and taxes.

Yes. The calculators are free to use and do not require an account.

No. Calculations run locally in your browser, and the numbers you enter are not uploaded or stored.

Results show up to ten decimal places and remove unnecessary trailing zeros. Round money to the precision required by your situation.

Percent means per hundred. A value of 35% means 35 out of every 100, which is the same as the decimal 0.35 and the fraction 35/100.

Multiply the decimal by 100 and add the percent sign. For example, 0.425 × 100 = 42.5%.

Divide the numerator by the denominator, multiply by 100, and add the percent sign. For example, 3/8 = 0.375 = 37.5%.

No. Moving from 20% to 25% is an increase of 5 percentage points, but the relative percentage increase is 25% because 5 is one quarter of the original 20.

You can use them for general arithmetic, but Flux Calculator does not provide tax, legal, investment or financial advice. Confirm important decisions with an appropriate professional.

Flux Calculator shows up to ten decimal places and removes unnecessary trailing zeros. A spreadsheet may use different display precision while retaining a similar underlying value.