Free business utility calculator

Simple Calculator

A clean four-function calculator for quick business math: Add, Subtract, Multiply, and Divide.

Tool & Tally calculators are for general business planning and estimating; they are not tax, legal, payroll, financial, or accounting advice. No guaranteed revenue, profit, leads, bookings, sales, rankings, or ROI.

Business utility

Enter your numbers.

Formula and assumptions

How the calculator works

Add: A + B Subtract: A - B Multiply: A × B Divide: A ÷ B

Common mistakes this catches

  • Typing quick business math into random search boxes.
  • Forgetting whether the number was added, subtracted, multiplied, or divided.
  • Dividing by zero.