Free, browser-based tools for real-world hide-and-seek players. Whether you are running a home game with friends, using physical cards, or planning your next transit chase, these calculators help you solve spatial deduction questions without physical calipers or paper maps.
Available Web Tools
Radar Ring Calculator →
Calculate and visualize distance rings on an interactive canvas. Enter custom distances in miles, kilometers, meters, or feet, and simulate "Inside" vs. "Outside" deduction shading.
Open Radar CalculatorThermometer Bisector Tool →
Visualize how a straight-line trip bisects the map. Toggle between "Warmer" and "Colder" to see the perpendicular bisector eliminate half the playable area with mathematical precision.
Open Thermometer ToolDigital Question & Curse Card Drawer →
A complete digital card deck for table and field games. Draw Matching, Measuring, Radar, Thermometer, Photo, and Tentacles cards with cost multipliers and hider curses.
Open Card DrawerAutomate Everything with Near
While these standalone calculators work great for manual games, the full Near application coordinates live games automatically. Near combines GPS distance checks, automatic deduction shading, private hider confirmation, transit routing, and synchronized room timers directly on everyone's phone.
Frequently Asked Questions
Can I use these tools with the Jet Lag home game?
Yes. Many players use Near's free calculators alongside physical cards or home rules to accurately calculate radius rings and perpendicular bisectors without needing drafting compasses or physical maps.
Are these calculators free?
Yes, all tools on Near are 100% free to use in any browser with no login required.