A simple online calculator, with a record of every item.

Start with addition, subtraction, multiplication, or division

This basic calculator handles addition, subtraction, multiplication, and division. Open the CalcStory calculator and use the number, decimal, and +, −, ×, ÷ keys to enter your calculation. You can start with a single expression or build a list of separate items.

CalcStory has two equals keys. Tap the upper, shorter equals key to add the current number or expression to the item list and prepare the next entry. Tap the lower, wider equals key to finish the calculation, save its total to history, and clear the list. While editing an item, the lower key saves that edit.

Calculation order: CalcStory evaluates expressions from left to right. It does not automatically do multiplication and division before addition and subtraction. Use parentheses whenever you want a group to be calculated first.

Add three shopping prices, one item at a time

An itemized calculator is useful when you want to check each price before saving a total. Try three prices: 12.5, 8.9, and 3.

1. Enter 12.5 and tap the upper, shorter equals key to keep it in the list.
2. Enter 8.9, confirm it with the same key, then enter and confirm 3. Keep the items connected by addition.
3. Review the three entries, then tap the lower, wider equals key to save the total in history.

12.5 + 8.9 + 3 = 24.4You can also enter this whole addition as one expression.

The separate entries make it easier to compare the calculation with a receipt. A note such as “Saturday groceries” gives the saved total some context when you look for it later. You can use CalcStory as an expense calculator in the same way: enter each cost, check the total, and name the saved record.

Use parentheses to control the order

Suppose one set of purchases costs 18 + 6, and you need two sets. Enter the first sum inside parentheses, then multiply it by 2.

(18 + 6) × 2 = 48The parentheses make 18 + 6 one group: 24 × 2 = 48.

The order matters when you mix operations. In CalcStory, 2 + 3 × 4 gives 20 because it calculates from left to right. To multiply 3 by 4 first, enter 2 + (3 × 4), which gives 14.

Read a decimal result and its remainder

For a division that does not divide evenly, CalcStory can show both the decimal result and the whole-number quotient and remainder.

9 ÷ 6 = 1.5Whole-number quotient: 1. Remainder: 3.

The two forms describe the same division: 6 fits into 9 once, leaving 3; that remainder is 3 ÷ 6 = 0.5 of another share. This is handy when splitting a quantity into whole groups while also checking the decimal amount.

Correct one number without retyping everything

If the second shopping price should be 9.9 instead of 8.9, tap that confirmed item to open it for editing. Change the number and use the lower, wider equals key to save the edit. The total updates with the corrected entry.

12.5 + 9.9 + 3 = 25.4Only the second price changed; the other entries stay available.

You can also bring a saved calculation back to the list, edit it, and save the revised total. This is useful for a repeat purchase or a correction to an earlier record. The calculator’s built-in user guide explains the history controls in detail.

Keep useful calculations in history

A calculator with history lets you return to the working behind a total. In CalcStory, saving the final total keeps the calculation as a record, rather than leaving you with only an isolated answer.

• Add a note. Describe what the record is for, such as “groceries” or “office supplies.” Notes help distinguish similar totals.
• Search past records. Use history search to find a calculation by keyword instead of scrolling through every entry.
• Use separate calculation books. Keep home expenses, work purchases, and travel calculations in their own books.

Calculation records and settings are stored locally on your device. In the browser, keep using the same browser and website address to return to those records; clearing the site’s stored data can remove them.

Use CalcStory online or install the mobile app

The website is a free online calculator that runs in your browser. Its first load needs an internet connection. Whether you can reopen it offline depends on the browser’s cached files, so offline reopening is not guaranteed.

For reliable offline use after installation, choose the native CalcStory app for iPhone, iPad, or Android.