The Addition Calculator provided by Hesapstan adds the numbers in your list, including positive, negative, zero and decimal values, and shows the sum with the addition chain.
An addition calculator returns the sum of a list of numbers
This calculator works with a list of numbers rather than only one fixed pair. If you enter 3; 7; 10, the expression is shown as 3 + 7 + 10 and the sum is 20. The goal is to make the final sum and the numbers used in the sum easy to check.
The Addition Calculator gives a quick sum. For a carry row, column alignment and classroom-style long addition, use the Long Addition calculator instead.
Positive numbers, negative numbers and zero can be added in the same list
The list can contain positive numbers, negative numbers and zero together. Negative values decrease the total, while positive values increase it. For example, the list -5; 12; -3 gives a sum of 4.
Giriş / Input: -5; 12; -3 — Sonuç / Output: -5 + 12 + (-3) = 4 — Negative inputs are supported here; this is different from the educational long-addition calculator, which is intentionally limited to positive inputs.
Decimal comma and decimal dot are both supported
Decimal numbers may be written with a dot or a comma. The calculator accepts forms such as 1.5 and 1,5. You can separate values with spaces, new lines, semicolons, or comma plus space.
1,5 means one decimal number. If you want a comma to separate two values, write 1, 5 with a space after the comma, or use semicolons/new lines for clearer lists.
Giriş / Input: 1.5; 2.5 — Sonuç / Output: 1.5 + 2.5 = 4 — Comma decimals are also accepted.
The addition chain may be abbreviated for long lists
The calculator shows the addition chain along with the sum. If the list contains many numbers, the chain can be shortened to keep the result readable. This does not mean that only the visible terms were added.
For short lists, all terms can be displayed directly. For longer lists, the key checks are the parsed values and the final sum.
This calculator uses standard arithmetic and does not promise unlimited precision
The Addition Calculator is designed for quick general use and relies on standard JavaScript number arithmetic. It does not claim arbitrary precision for extremely large numbers, very long decimals or large sets of precision-sensitive decimal values.
This page is for general addition. When decimal precision is the main concern, the Decimal Operations calculator may be the better fit.
Addition is closely related to subtraction and the other basic operations
Addition is one of the basic arithmetic operations and is often used together with subtraction, multiplication and division. This page gives the sum only; for a difference, product or quotient, use the matching calculator.
If you need the column method with carries, use the Long Addition calculator rather than this quick addition page.
Frequently Asked Questions
What does the Addition Calculator do?
It adds the values in a list of numbers and shows the final sum with the addition chain.
Can I add negative numbers?
Yes. Positive numbers, negative numbers, zero and decimal values can be used in the same list.
Can I use a comma as the decimal separator?
Yes. Both 1,5 and 1.5 are accepted as decimal input styles.
How should I separate the numbers?
Use spaces, new lines, semicolons, or comma plus space. For lists that contain decimal commas, semicolons or new lines are usually clearer.
Does this calculator show long addition steps?
No. It is a quick addition calculator. Use the Long Addition calculator for carry rows and column alignment.
Is the result unlimited-precision for every input?
No. The calculator uses standard JavaScript number arithmetic, so extremely large values or very long decimals can have practical precision limits.