Formula
x=(y−b)/m for a supplied calibration line y=mx+b.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Uses an existing linear calibration; does not fit data or calculate uncertainty. Units follow the supplied slope and signal.
Example Calculation
Example inputs
- Measured signal y: 11
- Slope m: 2
- Intercept b: 1
Signal 11 on y=2x+1 gives x=5.
Frequently asked questions
How do I use this calculator?
Enter measured signal y, slope m, intercept b. The result updates automatically. Use Reset to restore the example values.
What method does it use?
x=(y−b)/m for a supplied calibration line y=mx+b.. Uses an existing linear calibration; does not fit data or calculate uncertainty. Units follow the supplied slope and signal.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.