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Mil-Dot Distance Calculator (Mils Ranging Formula)

Known in Polish military materials as the DKW method (Długość–Kąt–Wysokość). Internationally referred to as the Mil-Dot Ranging Formula.

Estimate distance, target size or mils using the Mil-Dot ranging formula. Field / military calculator with live calculations.

DKW (Mil-Dot) Calculator

Target size is always in m / cm.

Computed result ≈
Target size presets
Presets are intended for quick field estimation.
mils
1 mil is the spacing between mil-dots in a mil-dot reticle.
Angle presets
Presets are intended for quick field estimation.

$$D=\frac{W\cdot 1000}{K}$$
$$W=\frac{D\cdot K}{1000}$$
$$K=\frac{W\cdot 1000}{D}$$

Reference tool. Accuracy depends on observation and field conditions.

FAQ – DKW Calculator

DKW is a distance estimation method known under this name in Polish military training materials. The abbreviation comes from the Polish terms for Distance, Angle and Target size. Internationally, the same calculation is referred to as the Mil-Dot Ranging Formula and is used with mil-based reticles.
A mil is an angular unit used in mil-based optics. In practical terms, 1 mil subtends about 1 meter at 1000 meters (or 10 cm at 100 meters).
No. This is an estimation tool. Accuracy depends on correct mil reading, realistic target size, and observation conditions.
Changing the distance unit (D) triggers a recalculation of the formula, not just a display conversion. This behavior is mathematically correct.

Sources and reference materials