Enter two known values.
🔺 Cone Calculator
s = √(r² + h²)
V = (1/3)πr²h
Ohm’s law calculator
Enter any two known values — the other two calculate automatically.
V
Voltage
V = I × R
I
Current
I = V / R
R
Resistance
R = V / I
P
Power
P = V × I
Ideal Gas Law Calculator
PV = nRT
Pressure (P)
Volume (V)
Amount (n)
Temperature (T)
Notes:
• Enter any three variables to calculate the fourth automatically
• R = 0.08206 L·atm/(mol·K) is used as the gas constant
• All calculations assume ideal gas behavior
• Temperature in Kelvin must be > 0