Static Leakage Power Calculator
Work out static leakage power instantly with clear inputs, formula shown and shareable results.
About Static Leakage Power Calculator
Sub-threshold leakage roughly doubles every 10 degrees of junction temperature, so a chip at 85 degrees leaks about 64 times as much as the same chip at 25. That exponential coupling creates thermal runaway risk: leakage heats the die, which increases leakage further.
Formula
Leakage power
P_leak = N x I_leak x V, with I_leak roughly doubling per 10 degrees C rise
Worked example
With the default values below, Static Leakage Power Calculator returns Leakage power of 1,827.84. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Transistor count
- 4.2 billion
- Leakage per transistor
- 8 nA
- Supply voltage
- 0.85 V
- Junction temperature
- 85 °C
Results
- Leakage power
- 1,827.84 W
- Total leakage current
- 2,150.40 A
- Temperature multiplier versus 25 C
- 64.00 x
- Leakage power at 25 C
- 28.56 W
Step by step
- 1Values used
- 2Leakage power
- 3Leakage power= 1,827.84 W
- 4Total leakage current= 2,150.40 A
- 5Temperature multiplier versus 25 C= 64.00 x
- 6Leakage power at 25 C= 28.56 W
Assumptions and limits
- The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
Why is leakage a design-limiting problem?
At advanced nodes it can be 30-50% of total power. It flows whether the circuit is working or not, so it directly attacks battery life in idle states.
How is leakage reduced?
Power gating idle blocks, multi-threshold cells (high-Vt on non-critical paths), body biasing, and keeping junction temperature down.
Related Calculators
You might also need
- Power Density CalculatorAlso in Semiconductor, VLSI & Hardware Design
- Clock Tree Power CalculatorAlso in Semiconductor, VLSI & Hardware Design
- Dynamic Power Dissipation CalculatorAlso in Semiconductor, VLSI & Hardware Design
- FPGA Power Estimate CalculatorAlso in Semiconductor, VLSI & Hardware Design
- IR Drop In Power Grid CalculatorAlso in Semiconductor, VLSI & Hardware Design
- Total Chip Power CalculatorAlso in Semiconductor, VLSI & Hardware Design