MathKit Scientific Calculator
A full scientific calculator in your browser — trig, logs, powers, roots, π and e, parentheses and a calculation history. Type on your keyboard or tap the keypad. Free, no signup, nothing is uploaded.
By UpnixTools · Tool last reviewed November 2026
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History (tap an entry to reuse it)
- No calculations yet — try 12 × 8 or sin(30).
How to use MathKit
- Basic maths: tap the digits and operators (+ − × ÷) just like a pocket calculator, then press = or Enter.
- Scientific functions: sin, cos, tan, log (base 10), ln (natural log), √ and powers — tap the function, enter the value, close the parenthesis.
- Constants: π and e are one tap away. Ans inserts your last result so you can chain calculations.
- Keyboard: type digits, + − * / ^ ( ) % and . directly. Enter calculates, Backspace deletes, Escape clears.
- History: your last calculations appear below the keypad — tap one to load its result back into the expression.
Trig in degrees
MathKit works in degrees, the unit used in most school and everyday problems: sin(30) = 0.5, cos(60) = 0.5, tan(45) = 1. If you need radians, convert first — radians = degrees × π ÷ 180.
MathKit FAQs
How do I use the trig functions (sin, cos, tan)?
Tap sin, cos or tan, then enter the angle in degrees and close the parenthesis — for example sin(30) = 0.5. MathKit works in degrees, which is what most school and everyday problems use. For radians, multiply the angle by π/180 first.
Does MathKit use degrees or radians?
Degrees. sin(90) gives 1 and cos(180) gives -1. If you need radians, convert first: radians = degrees × π ÷ 180. For example, sin(1 radian) is sin(57.2958) in MathKit.
Can I use my keyboard with MathKit?
Yes. Type digits, + − * / ^ ( ) % and . directly, press Enter for equals, Backspace to delete the last character and Escape to clear everything. The on-screen keypad does the same things if you prefer to click or tap.
What is the Ans button for?
Ans inserts the result of your last calculation into the current expression, so you can chain calculations without retyping long numbers. For example, after computing 12 × 8 = 96, tap Ans + 4 to get 100.
Is MathKit free? Does it store my calculations?
Yes, MathKit is completely free with no signup. Your calculation history is kept only in your browser tab and disappears when you close the page — nothing is sent to a server.