Custom formula

Write the method once, give every variable a value — with units if you like — and press Evaluate. Then solve the same formula for any variable, sweep a parameter, rank which inputs matter most, or propagate measurement uncertainty. Saving is optional; saved expressions can be downloaded or removed from the Privacy Policy.

Angle

Format

Digits12

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NameDescription(optional)

Expression

Variables — values may carry units (2 kN, 200 GPa) and a ± uncertainty

Name	Value	± uncertainty	Meaning

Result unit(optional)

Result

Processed — press the button to show the result.

Formula saving is off. You can evaluate normally without optional storage. Enable Functional preferences to remember a workspace and save formulas to the server.

Analyse this formula

Set the result you want and the engine finds the value of one variable that produces it, keeping every other variable at its current value. Units are honoured: the answer is reported in the unit the variable currently uses.

UnknownResult should equalStarting guess(non-linear cases)

Engineering library

Ready-made formulas with typical values and units. Load one, then change what you need.

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Preparing the tool…

Building a reusable formula

Name the expression and enter its mathematical terms, for example P*(1+r/n)^(n*t).
Assign values with consistent units. A rate of 5% is 0.05 when the formula expects a decimal rate.
Press Evaluate. Save only expressions you want to revisit, and use the Privacy Policy controls to download or remove saved formulas.

Saving does not certify a formula. Review its assumptions, inputs and output before making an important decision. Avoid sensitive information in saved content.

Worked examples

Custom formula

Engineering library

Ready-made formulas with typical values and units. Load one, then change what you need.