Quick arithmetic the easy way — addition, subtraction, multiplication, division, percentage and parentheses. Memory, history, and full keyboard support.
🆓 Free Forever⚡ Instant Math⌨️ Keyboard Support🧠 Memory & History
Click digits or type on your keyboard. Use parentheses for grouped calculations.
2
Choose Operator
Add, subtract, multiply, divide, or take a percentage. PEMDAS rules apply automatically.
3
Get Result
Press = or Enter to evaluate. Past calculations appear in History — click any to reuse.
Why Use Sigify's Basic Calculator?
Whether you're balancing your budget, splitting a bill, calculating discounts, or doing quick homework, a reliable browser-based calculator is essential. Sigify's Basic Calculator runs entirely in your browser and works on any device — no install, no signup.
Features
➕
All Four Operations
Addition, subtraction, multiplication, division with full decimal precision.
%
Percentage
Compute percentages like a standard desk calculator.
±
Sign Toggle
Easily flip positive/negative on the current number.
⌨️
Keyboard Support
Full physical keyboard mapping for power users.
🧠
Memory
MC, MR, M+, M− keys — just like a real calculator.
📜
History
Review the last 20 calculations and click to reuse any value.
Calculations Stay Private
Sigify's calculator is purely client-side JavaScript. Nothing is uploaded. Your numbers stay on your device.