ISO to GOST
Type a value in ISO to get it in GOST instantly.
360GOST
That's about the same as general-purpose film. That is 2 stops from ISO 100.
What it means
How sensitive is that?
Digital cameras quote an ISO-equivalent sensitivity. Above the base ISO the sensor is not more sensitive, only amplified — which is where the noise comes from.
The math
How to convert ISO to GOST
To convert ISO to GOST, multiply by 0.9.
Example: 400 ISO × 0.9 = 360 GOST.
In the other direction, 1 GOST = 1.11111 ISO.
Every unit
Your speed in every unit
Tables
ISO to GOST conversion table
| ISO | GOST |
|---|---|
| 25 ISO | 22.5 GOST |
| 50 ISO | 45 GOST |
| 100 ISO | 90 GOST |
| 200 ISO | 180 GOST |
| 400 ISO | 360 GOST |
| 800 ISO | 720 GOST |
| 1,600 ISO | 1,440 GOST |
| 3,200 ISO | 2,880 GOST |
| 6,400 ISO | 5,760 GOST |
| 12,800 ISO | 11,520 GOST |
GOST to ISO conversion table
| GOST | ISO |
|---|---|
| 25 GOST | 27.7778 ISO |
| 50 GOST | 55.5556 ISO |
| 100 GOST | 111.111 ISO |
| 200 GOST | 222.222 ISO |
| 400 GOST | 444.444 ISO |
| 800 GOST | 888.889 ISO |
| 1,600 GOST | 1,777.78 ISO |
| 3,200 GOST | 3,555.56 ISO |
| 6,400 GOST | 7,111.11 ISO |
| 12,800 GOST | 14,222.2 ISO |
Quick answers
Quick answers
- How many GOST is 1 ISO?
- 1 ISO is 0.9 GOST.
- How many GOST is 10 ISO?
- 10 ISO is 9 GOST.
- How many GOST is 400 ISO?
- 400 ISO is 360 GOST.
The units
About these units
ISO (ISO)
The modern arithmetic speed, the number on the box.
GOST (GOST)
The Soviet scale, about 10% below ASA until 1987.
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