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Both calculators run independently — change the inputs on either side to compare results.

Decibel Calculator (Power Ratio)

Converts a ratio of two power levels into decibels using 10 × log10(P1 ÷ P2). Decibels express how many times larger or smaller one power is than another on a logarithmic scale used in acoustics, electronics, and signal processing.

Power 1 (measured) (W)

Power 2 (reference) (W)

Physics

Power Calculator

Find the mechanical power output of any process by entering the work done and the time taken. Ideal for physics coursework, engine efficiency checks, and energy-use calculations.

Work Done (J)

Time (s)

Key differences

	Decibel Calculator (Power Ratio)	Power Calculator
Category	Physics	Physics
Inputs required	2	2
Result	Level Difference (dB)	Power (W)
What it does	Converts a ratio of two power levels into decibels using 10 × log10(P1 ÷ P2). Decibels express how many times larger or smaller one power is than another on a logarithmic scale used in acoustics, electronics, and signal processing.	Find the mechanical power output of any process by entering the work done and the time taken. Ideal for physics coursework, engine efficiency checks, and energy-use calculations.