// electronics toolbox

Engineering Design
Calculators

Precision tools for RF, embedded systems, and PCB design ā€” built for engineers who know what they're doing.

All Calculators
šŸ“” RF & Signal
āš™ļø Embedded Systems
šŸ”² PCB & Library
šŸ“”
Microstrip Impedance
RF / Transmission Line
mm
mm
mm
ā€”
Characteristic Impedance
ā€”Ī©
Effective Īµr
ā€”
Velocity Factor
ā€”
šŸ”Š
Power Converter
dBm ā†” Watts ā†” Vrms
dBm
ā€”
Watts
ā€”
mWatts
ā€”
Vrms (50Ī©)
ā€”
šŸŒŠ
Skin Depth
RF / High-Freq Conductor
Skin Depth (Ī“)
ā€”Ī¼m
āš”
LC Resonant Frequency
RF / Filter Design
Resonant Frequency
ā€”MHz
ā¬‡ļø
Voltage Divider
Embedded / Analog Design
V
Output Voltage
ā€”
Divider Ratio
ā€”
Current Draw
ā€”
Power (R1+R2)
ā€”
šŸ”‰
RC Filter Calculator
Low-Pass / Time Constant
Cutoff Freq (fc)
ā€”
Time Constant (Ļ„)
ā€”
Roll-off Rate
āˆ’20 dB/dec
Rise Time (10ā€“90%)
ā€”
šŸ–„ļø
UART Baud Rate Error
Embedded / MCU Clock
BRR Register
ā€”
Actual Baud
ā€”
Error %
ā€”
Status
ā€”
šŸ“
Trace Width (IPC-2221)
PCB Current Capacity
A
Ā°C
Minimum Trace Width
ā€”mm
šŸ”©
Via Current Capacity
PCB / Library Design
mm
mm
Ā°C
Max Current
ā€”
Resistance
ā€”
Finished Hole
ā€”
Cu Cross-section
ā€”
šŸ”‹
Decoupling Capacitor
PCB Power Integrity
V
mA
%
Minimum Capacitance
ā€”nF