Resistor tolerance range calculator

Calculate minimum and maximum with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use minimum and maximum to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Nominal resistance (Ω)
1000
Tolerance (%)
5
Minimum (Ω)
950
Maximum (Ω)
1050

Try another scenario

Nominal resistance (Ω)
1100
Tolerance (%)
5
Minimum (Ω)
1045
Maximum (Ω)
1155
Calculation method

Calculation method

Minimum (Ω)

a × (1-b ÷ 100)

Maximum (Ω)

a × (1+b ÷ 100)

Symbols and units
a
Nominal resistance (Ω)
b
Tolerance (%)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • The tolerance band is symmetric around the nominal value.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

Method reference ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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