Area in acres, hectares and square meters and perimeter of a polygon from lat,lon vertices, e.g. a parcel or flight area.

Sunrise, sunset, civil twilight and day length for a latitude/longitude and date, in UTC and a chosen UTC offset.

Estimated heating and cooling degree days by month for a location from NASA temperature normals, in Celsius and Fahrenheit.

Monthly rainfall totals for a location, wettest and driest months, and how seasonal the rain is (Walsh-Lawler index).

FEMA flood hazard zone at a US latitude and longitude: high-risk (A/AE/V), moderate or minimal, with base flood elevation.

Great-circle distance (miles, km, feet, nautical miles) and initial compass bearing between two latitude/longitude points.

Congressional and state legislative (upper and lower) districts covering a US address, with district codes and the state.

Ground elevation in feet and meters at a US latitude and longitude from USGS 3DEP, with data-coverage check.

Census geography at a US coordinate: state, county, tract, block, city or place, with GEOIDs for joining Census data.

US ZIP code to place name, state and centroid; optionally verify it belongs to a state you expect.

Day length, sunrise, sunset (UTC) and solar noon for a latitude, longitude and date, including polar day and night.

Elevation profile along a line between two US points: relief, ascent, descent, steepest grade and a flat/steep verdict.

Is a US point inside a mapped wetland? National Wetlands Inventory type and size, as a permitting heads-up.

First-look site screen for a US coordinate: elevation, FEMA flood zone and mapped wetlands combined, with flags.

Closest known exoplanets to the Sun in light-years, optional size filter, with star type, orbit and habitable-zone position.

Transit depth (Rp/Rs squared) in percent and ppm from planet and star radius, plus duration if period and star mass are given.

Planet size, mass, density, gravity and escape speed as ratios to Earth, with insolation if luminosity and orbit are given.

Monthly sunlight (peak sun hours) at a latitude and longitude, resource class, and optional solar PV yield for a system size.

Elevation at a location and what it does: air pressure, boiling point of water, air density and oxygen versus sea level.

Confirmed exoplanet discovery counts by year and by detection method, with totals, the peak year and a cumulative series.