Planck Units Calculator

Convert between SI units and natural Planck units

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Physical Quantity

Value (Planck units)

Results

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All Planck Units

lP (length):1.6163e-35 m

tP (time):5.3912e-44 s

mP (mass):2.1764e-8 kg

TP (temp):1.4168e+32 K

EP (energy):1.9561e+9 J

Formulas

lP = √(ℏG/c³) ≈ 1.616×10⁻³⁵ m

tP = √(ℏG/c⁵) ≈ 5.391×10⁻⁴⁴ s

mP = √(ℏc/G) ≈ 2.176×10⁻⁸ kg

Planck units are natural units where ℏ = c = G = kB = 1.