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Depth of Field (DoF)

Calculate Depth of Field (DoF) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

Depth of Field (DoF)

Focusmm
f-stop
Subject distancem
Circle of confusionmm
Depth of field
2.5467m
Calculate Depth of Field (DoF) instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.

More about: Depth of Field (DoF)

What it calculates

The “Depth of Field (DoF)” calculator computes Depth of field in m from 4 parameters: focus (mm), f-stop, subject distance (m), circle of confusion (mm).

Used by photographers and videographers when setting up a shoot.

Example calculation

With parameters Focus = 50 mm, f-stop = 4, Subject distance = 5 m, Circle of confusion = 0.03 mm the result is 2.55 m.

How to use

  1. Enter the parameter values — every field above is adjustable with a slider.
  2. The result and related metrics are calculated automatically as you type.
  3. Use the additional metrics shown (if any) where needed.
  4. Copy the result or bookmark the page.

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