everydaycalc
Maths

Ratio scaling Calculator

Use the free ratio scaling calculator. Enter original a, original b, new a to get a result, with a formula and worked example.

How to calculate ratio scaling

This tool calculates ratio scaling from Original A, Original B, New A. Enter each quantity in its labelled field, then use the formula below to check the calculation.

Formula

new B = original B × new A ÷ original A

Worked example

Original A
2
Original B
3
New A
10

Applying the formula to these values gives 15 .

What should I check?

Calculate powers, roots, logarithms, ratios, slopes and trigonometric functions. Trigonometric angles are entered in degrees.

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