How the calculator works
square root: √x
square: x²
cube: x³
sin/cos/tan: uses degrees
log10 and ln: require positive numbersFree business utility calculator
Scientific Calculator
A lightweight scientific calculator for roots, powers, percentages, logarithms, and trig checks.
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
Common mistakes this catches
- Using radians when you expected degrees.
- Trying logs or square roots on invalid negative/zero inputs.
- Using a scientific result as final engineering design without proper verification.