Math Calculator
A Complete Online Math Calculator
This free online math calculator provides both basic arithmetic operations and scientific functions. Use it for everyday calculations, homework help, or quick conversions between number formats. All calculations happen instantly in your browser — no data is sent to any server.
The calculator includes trigonometric functions (sine, cosine, tangent), logarithms (base-10 and natural log), square roots, squares, and reciprocal calculations alongside standard addition, subtraction, multiplication, and division.
Available Functions
Arithmetic
+ − × ÷
Trigonometry
sin, cos, tan (degrees)
Logarithms
log₁₀, ln (natural log)
Powers & Roots
x², √x
Reciprocal
1/x
Clear
AC (all clear), ⌫ (backspace)
Trigonometric Functions (Degree Mode)
The calculator operates in degree mode for trigonometric functions. Here are common values:
| Angle | sin | cos | tan |
|---|---|---|---|
| 0° | 0 | 1 | 0 |
| 30° | 0.5 | 0.866 | 0.577 |
| 45° | 0.707 | 0.707 | 1 |
| 60° | 0.866 | 0.5 | 1.732 |
| 90° | 1 | 0 | undefined |
Frequently Asked Questions
What functions does the math calculator include?
Basic arithmetic (+, −, ×, ÷), trigonometric functions (sin, cos, tan in degrees), logarithms (base-10 and natural), square roots, squares, and reciprocals.
Are calculations saved?
No. All calculations happen locally in your browser. No data is stored, transmitted, or saved.
Can I use this for homework?
Yes. This calculator is great for checking work and performing calculations. For learning math concepts, try to work problems by hand first.