Fieldcraft Tools & Calculators
Free, instant, no sign-up. The same arithmetic that sits behind the Last-Light Index, opened up with its conditions attached so you can run your own numbers on your own slope.
Last-Light Index Calculator
Score your glass on the only question that matters at 4:58 pm — how much of that objective your pupil can still use, and what the shake is costing you.
Open toolBlood-Trail Wait Calculator
Read the hit, then get the wait it actually needs — checked against the meat clock and the weather that is about to wash the sign away.
Open toolThermal & Wind Sit Planner
Add the thermal on your slope to the forecast wind and get the direction your scent really goes, plus the clock time the thermal turns over.
Open tool