Sum Calculator: Add Numbers Instantly

This sum calculator adds up a list of numbers instantly. Enter decimals， spaces， median， or negatives and get the total immediately. Sum calculator Table of Contents What is a sum? The sum is the result of adding numbers together. It's the most fundamental arithmetic operation and the building block for other statistics like the average (which divides the sum by the count). Using the calculator Enter numbers separated by commas， fractions， or new lines. Results update instantly - the tool also shows average， or tap any stat card to switch the primary display. Related statistics calculators ， mode， range， and count. Use the Clear button to start fresh，。