Raspberry Pi GPIO Pin Guide
This guide is a GPIO pin reference for all available Raspberry Pi boards to date. Use the tables to check for the pin’s location, name, and function.
The following table shows the GPIOs for the Raspberry Pi 3 Model B, Raspberry Pi 2 Model B, Raspberry Pi 1 Model A+, Raspberry Pi 1 Model B+, Raspberry Pi Zero, and Raspberry Pi Zero W.
FUNCTION |
NAME |
NUMBER |
NUMBER |
NAME |
FUNCTION |
DC power |
3.3 V |
1 |
2 |
5 V |
DC power |
SDA1, I2C |
GPIO 2 |
3 |
4 |
5 V |
DC power |
SCL1, I2C |
GPIO 3 |
5 |
6 |
GND |
|
GPIO_GCLK |
GPIO 4 |
7 |
8 |
GPIO 14 |
TXD0 |
|
GND |
9 |
10 |
GPIO 15 |
RXD0 |
GPIO_GEN0 |
GPIO 17 |
11 |
12 |
GPIO 18 |
GPIO_GEN1 |
GPIO_GEN2 |
GPIO 27 |
13 |
14 |
GND |
|
GPIO_GEN3 |
GPIO 22 |
15 |
16 |
GPIO 23 |
GPIO_GEN4 |
DC power |
3.3 V |
17 |
18 |
GPIO 24 |
GPIO_GEN5 |
SPI_MOSI |
GPIO 10 |
19 |
20 |
GND |
|
SPI_MISO |
GPIO 9 |
21 |
22 |
GPIO 25 |
GPIO_GEN6 |
SPI_CLK |
GPIO 11 |
23 |
24 |
GPIO 8 |
SPI_CE0_N |
|
GND |
25 |
26 |
GPIO 7 |
SPI_CE1_N |
I2C ID EEPROM |
DNC |
27 |
28 |
DNC |
I2C ID EEPROM |
|
GPIO 5 |
29 |
30 |
GND |
|
|
GPIO 6 |
31 |
32 |
GPIO 12 |
|
|
GPIO 13 |
33 |
34 |
GND |
|
|
GPIO 19 |
35 |
36 |
GPIO 16 |
|
|
GPIO 26 |
37 |
38 |
GPIO 20 |
|
|
GND |
39 |
40 |
GPIO 21 |
|
Raspberry Pi 1 Model A and Raspberry Pi 1 Model B Rev. 2 have the same pinout but have only the first 26 pins.
The Raspberry Pi 1 Model B Rev. 1 was the very first Raspberry Pi board released and has a different pinout from all the other boards. These boards aren’t available anymore, but just in case you have one, here’s the pinout.
FUNCTION |
NAME |
NUMBER |
NUMBER |
NAME |
FUNCTION |
DC power |
3.3 V |
1 |
2 |
5 V |
DC power |
SDA0, I2C |
GPIO 0 |
3 |
4 |
5 V |
DC power |
SCL0, I2C |
GPIO 1 |
5 |
6 |
GND |
|
GPIO_GCLK |
GPIO 4 |
7 |
8 |
GPIO 14 |
TXD0 |
|
GND |
9 |
10 |
GPIO 15 |
RXD0 |
GPIO_GEN0 |
GPIO 17 |
11 |
12 |
GPIO 18 |
GPIO_GEN1 |
GPIO_GEN2 |
GPIO 21 |
13 |
14 |
GND |
|
GPIO_GEN3 |
GPIO 22 |
15 |
16 |
GPIO 23 |
GPIO_GEN4 |
DC power |
3.3 V |
17 |
18 |
GPIO 24 |
GPIO_GEN5 |
SPI_MOSI |
GPIO 10 |
19 |
20 |
GND |
|
SPI_MISO |
GPIO 9 |
21 |
22 |
GPIO 25 |
GPIO_GEN6 |
SPI_CLK |
GPIO 11 |
23 |
24 |
GPIO 8 |
SPI_CE0_N |
|
GND |
25 |
26 |
GPIO 7 |
SPI_CE1_N |