About Super Calculator

A free calculator that works like a notepad. Write one calculation per line, and the answer appears next to it.

Why it exists

Most calculators make you retype numbers. Real numbers come from invoices, bank statements, spreadsheets and chat messages, written as 945 546,239 or 1,234.56, often with a currency sign. Super Calculator reads them exactly as you paste them, keeps every step visible, and lets you name values and reuse them on later lines. When you come back tomorrow, your sheet is still there.

What it can do

• Everyday math: + − × ÷, powers, brackets, and percentages such as 2 500 + 15% or 20% of 1 200.
• Names and totals: rent: 1 200 then rent * 12, plus total and subtotal for lists.
• Money: currencies such as ₸, $, € and ₽ with conversion, VAT, discounts and markups, loan and deposit payments, splitting a bill, and amounts in words for invoices.
• Units, dates and times: 5 km in miles, days until 31.12.2026, workdays, and shifts such as 22:00 - 6:00.
• Sheets you keep: several named sheets, undo, share links, export to Excel-friendly CSV, print, and offline use as an installed app.
• Two languages: English and Russian, including Russian words in calculations such as 20% от 1 200 and сумма прописью.

Accurate by design

Calculations use exact decimal arithmetic, so 0.1 + 0.2 is exactly 0.3 and money adds up to the cent. Every release is checked by thousands of automated tests, including answers computed independently of the calculator itself.

Private by design

There is no sign-up. Your sheets are calculated and saved in your own browser and are never sent to our servers. Read the Privacy Policy for details.

How it is funded

Super Calculator is free. A single, clearly labeled ad helps pay for hosting and new features. It never covers your work and never opens pop-ups.

Contact

Found a mistake, missing a feature, or want to say hello? Write to you@example.com. Please include the line you typed and the result you expected; it helps us fix problems quickly.