EVERYDAY MONEY · ON YOUR DEVICE
Everyday calculator
Enter two numbers to see every basic result at once, including percentages. Then split a bill between friends.
EXAMPLE ESTIMATE
Your estimate
Enter your values and select Calculate.
Estimates use your assumptions. Calculations use unrounded values; displayed figures are rounded.
HOW IT WORKS
A useful estimate starts with clear inputs.
- Step 1
Enter two numbers to see the sum, difference, product and quotient.
- Step 2
Read the percentage results: a percent of a number, one number as a percent of the other and the change between them.
- Step 3
Enter a bill, a tip and the number of people to see each person’s share.
With 40 and 250, the sum is 290, the product is 10,000 and 40 is 16% of 250. A 2,400 bill with a 10% tip split four ways is 660 each.
Calculation assumptions and limits
Results use standard arithmetic on the two numbers you enter. Dividing by zero is not defined and is shown as such. The percentage change is measured from the first number to the second. The bill split divides the bill plus tip equally and does not round to coins or notes.
Can I use this with my local currency?
Yes. All inputs in one calculation must use the same currency. The currency selector changes number formatting and labels; it does not look up exchange rates or convert your amounts. Local loan rules and products may calculate costs differently.
Are my numbers saved?
No. Your inputs and results stay in this page’s memory. Reloading or leaving clears them. Download the CSV or print the result if you want a copy.
The quick sums of daily life, in one place
Enter two numbers and see the sum, difference, product, quotient, average and remainder at once. The same table answers the common percentage questions: what a percent of a number is, what percent one number is of another, and how much a value changed.
A second section splits a bill. Enter the total, a tip and the number of people to see what each person pays. Nothing is stored or sent anywhere.
Free to use. No sign-up required.
How to use this tool
- Enter two numbers to see the sum, difference, product and quotient.
- Read the percentage results and the average.
- Enter a bill, a tip and the number of people to split it.
A practical example
With 40 and 250, the sum is 290, the product is 10,000 and 40 is 16% of 250. A 2,400 bill with a 10% tip split four ways is 660 each.
Before you finish
Dividing by zero has no answer. Estimate the result first so you can spot a typing mistake.
The basic results
The calculator shows the sum, difference, product and quotient of your two numbers together, so you do not need to retype them for each operation. Dividing by zero has no answer, so the quotient and remainder show as not defined when the second number is zero.
Percentages in daily life
Three percentage questions come up most often. What is a percent of a number? Multiply the number by the percentage and divide by 100. One number is what percent of another? Divide it by the other and multiply by 100. How much did something change? Subtract the old value from the new one, divide by the old value and multiply by 100. The table answers all three for your numbers.
Splitting a bill
Enter the bill, a tip percentage and the number of people. The tip is added to the bill and the total is divided equally. Many restaurants already add a service charge, so check the bill before adding a tip. For other money questions, see the discount calculator and the monthly budget planner.
Good habits for quick sums
Estimate the answer first so you notice a typing mistake. Keep units consistent, for example do not mix rupees and paise, or minutes and hours. For decisions involving loans or savings, use a dedicated calculator that states its assumptions.
Frequently asked questions
How do I find a percentage of a number?
Multiply the number by the percentage and divide by 100. 15% of 200 is 200 × 15 ÷ 100 = 30.
How do I work out percentage change?
Subtract the old value from the new value, divide by the old value and multiply by 100. A rise from 40 to 50 is a 25% increase.
What happens if I divide by zero?
There is no answer, so the calculator shows that the result is not defined.
How is the bill split calculated?
The tip is a percentage of the bill. The bill plus the tip is divided equally by the number of people.
Does it do scientific functions?
No. It is for everyday arithmetic and percentages, not powers, roots or long expressions.
Is this a replacement for a scientific calculator?
No. It covers everyday arithmetic and percentages. It does not do powers, roots, trigonometry or long expressions.