Rifle Scope Calculators

Free tools for UK rifle scope buyers. All calculations use standard optical physics formulae. No sign-up required.

Essential for long-range shooting

Ballistic Drop Calculator

Enter your load and get a drop/MOA/MIL table — compare against AB Quantum, a Kestrel, or any other solver.

Open calculator →Essential for deer stalking

Exit Pupil Calculator

Calculate exit pupil diameter for any scope — and find out if it matches low-light shooting conditions.

Open calculator →Useful for target & PRS

Field of View Calculator

Convert angular field of view to linear FOV at any distance. Compare scopes side-by-side.

Open calculator →Useful for dawn & dusk stalking

Twilight Factor Calculator

Calculate a scope's twilight factor and relative brightness. Useful for comparing low-light optics.

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Looking for a specific scope? Try the AI Scope Wizard →