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🔬 Scientific Calculator

A full-featured online scientific calculator with trigonometry, logarithms, powers, memory functions, and DEG/RAD mode. Works just like a physical scientific calculator.

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How Trig Functions Work

DEG mode: sin(45°) → converts 45×π/180 → Math.sin(0.785) ≈ 0.7071
RAD mode: sin(π/4) → Math.sin(0.785) ≈ 0.7071
log(x): base-10 logarithm    ln(x): natural logarithm

Frequently Asked Questions

DEG (degrees) is the everyday unit — a full circle is 360°. RAD (radians) is the mathematical unit — a full circle is 2π ≈ 6.283. Trig functions give different results depending on the mode, so make sure you select the right one.

Type the angle value, then press the sin/cos/tan button. In DEG mode, enter degrees (e.g. 45 → sin → 0.7071). In RAD mode, enter radians (e.g. 0.785 → sin → 0.7071).

log is the base-10 logarithm (log₁₀). ln is the natural logarithm with base e ≈ 2.71828. For example, log(100) = 2 and ln(e) = 1.

M+ adds the current result to memory. M− subtracts it. MR recalls the stored value. MC clears memory. The M indicator lights up when a value is stored.

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