Every calculation saved, editable, and reusable. Basic, scientific, and business modes in one clean app.
Free, no ads · 4.6 rating from 2,300+ reviews
Scroll back through every calculation. Tap to edit, copy, or reuse any expression or result.
Trigonometric, logarithmic, and exponential functions — without the clutter when you don't.
Autocompleting parentheses and error prevention mean expressions just work.
A native app that follows your system and your grip.
Trusted by thousands every day
“I like using this app. It helps me more than the one I use before.”
“Still more complete than the iOS 18 calculator update.”
“I just downloaded it and already like it. Simple, understandable, and easy to reach.”
Free. No account. No ads in your way.
In Calculator 42, your previous calculations stay in a scrollable history above the keypad. Every expression can be edited, copied, or reused, so history stays part of the calculation instead of a separate lookup.
Yes. Instead of clearing the screen and typing again, Calculator 42 lets you tap an earlier calculation and change the expression itself.
Yes. It works like a calculator tape with previous calculations visible above the keypad, but Calculator 42 keeps every line editable.
Yes. Calculator 42 is free to use, requires no account, and keeps ads out of the calculator while preserving editable history.
Yes. You can copy or reuse earlier expressions and results instead of typing the same numbers again. Calculator 42 makes history part of the calculator.
Yes. Calculator 42 supports parentheses, percentages, and scientific functions, then keeps the whole expression editable in history.