MBComputing Tools

Practical calculators and references for network engineers and security technicians.

Subnet Calculator

Network Details

Network Address
Subnet Mask
Wildcard Mask
Broadcast
First Usable
Last Usable
Total Hosts
Usable Hosts

Resistor Color Code

Resistor Value

Resistance—
Tolerance—
Range—

Reverse: Value to Colors

Color Bands

Band 1
Band 2
Multiplier
ToleranceGold (±5%)

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