Practical geography, explained
Mapping Guides & Geographic Methods
Detailed articles for people who want to understand what a map result actually means. The focus is practical: worked examples, data limitations, method choices, common mistakes and the MapBench tools you can use to test the idea yourself.
Start with the question, not the tool
A useful map starts by defining the decision you need to make. These three guides cover common mistakes that affect distance, area and world-map interpretation.
Choosing the right distance method
Radius, straight-line distance and drive time answer different questions. Learn which one fits a delivery zone, commute, service area or geographic comparison.
Read guide →Measuring land area responsibly
Understand how boundary tracing, units, projection and source imagery affect acreage and parcel-area estimates.
Read guide →Understanding map projections
Learn why every flat world map distorts something and why projection choice matters for area, shape and distance.
Read guide →All guides
Long-form practical references covering coordinates, GPS formats, distance, routing, map projections, location lookups and original geographic research.
How to Calculate Distance Between Two Coordinates
The haversine formula explained step by step, with worked examples in kilometres, miles and nautical miles — and the cases where the spherical answer is not good enough.
Read →How to Find the Halfway Point Between Two Cities
Why averaging two coordinates gives the wrong midpoint, how the spherical midpoint is actually calculated, and how to pick a fair meeting point for more than two people.
Read →How to Convert Coordinates to an Address
Reverse geocoding explained: what turns a latitude and longitude into a street address, why the answer can be approximate, and how to check a result before you rely on it.
Read →How to Calculate Cost Per Mile (and What It Leaves Out)
Build a defensible cost-per-mile figure from fuel, maintenance, depreciation and insurance — and see which costs a simple fuel calculator cannot capture.
Read →How to Measure Fence Length and Count Posts
Measure the run on a map, allow for gates, corners and terrain, and work out how many posts and panels a fence actually needs.
Read →How to Calculate Seed Rate Per Acre
Convert a recommended seed rate into bags for your actual field, accounting for germination, row spacing, overlapping and the difference between drilled and broadcast.
Read →How to Read a Map Scale (and Convert It to Real Distance)
How representative fractions, scale bars and verbal scales work, why a printed map's scale changes when you zoom it, and how to convert a measurement to ground distance.
Read →How to Find the Time Zone for Any Coordinates
Why a longitude is not a time zone, how the tz database resolves an offset for a coordinate, and how daylight saving changes the answer twice a year.
Read →How to Plot CSV Coordinates on a Map
Prepare a coordinate spreadsheet correctly, catch the three failures that break most CSV-to-map attempts, and get a usable map without writing any code.
Read →How to Open a GeoJSON File and Convert It to Something Else
What to do with a .geojson file you cannot open, how to check it is valid, and which conversions keep which information.
Read →Full Moon Moonrise Times for 100 US Cities (2026–2027)
Moonrise time for every full moon, Oct 2026–Dec 2027, for America's 100 largest cities — including a Christmas Eve 2026 supermoon.
Read →How to Draw a Radius on Google Maps
Google Maps has no radius button. Here are the exact workarounds to draw a radius circle — plus free tools that do it in one click.
Read →How to Find Elevation on Google Maps
Check the elevation of any spot on Google Maps — desktop, mobile, and the precise method with exact numbers.
Read →Why Does Greenland Look Bigger Than Africa?
On most world maps Greenland looks as big as Africa. It is actually 14x smaller. Here is the Mercator illusion explained.
Read →How Many Counties Are in Each US State?
Every US state ranked by number of counties — Texas has 254, Delaware has 3. Complete 50-state table.
Read →US States by Population (2024 Census Estimates)
All 50 states ranked by 2024 population — California 39.4M at #1. Full table with ranks.
Read →Largest US Counties by Area
The 30 largest US counties by land area, led by Alaska's Yukon-Koyukuk. Ranked table in square miles.
Read →Alaska vs Texas: Size Comparison
Alaska is 2.2x larger than Texas — see the true sizes side by side with real land-area numbers.
Read →Texas vs California: Size Comparison
Texas is 1.7x larger than California — see the true sizes side by side with real land-area numbers.
Read →Greenland vs United States: Size Comparison
United States is 22.3x larger than Greenland — see the true sizes side by side with real land-area numbers.
Read →Alaska vs California: Size Comparison
Alaska is 3.7x larger than California — see the true sizes side by side with real land-area numbers.
Read →Texas vs France: Size Comparison
Texas is 1.3x larger than France — see the true sizes side by side with real land-area numbers.
Read →California vs Japan: Size Comparison
California is 1.1x larger than Japan — see the true sizes side by side with real land-area numbers.
Read →Montana vs Germany: Size Comparison
Montana is 1.1x larger than Germany — see the true sizes side by side with real land-area numbers.
Read →United States vs China: Size Comparison
United States is 1.0x larger than China — see the true sizes side by side with real land-area numbers.
Read →Texas vs Ukraine: Size Comparison
Texas is 1.2x larger than Ukraine — see the true sizes side by side with real land-area numbers.
Read →Greenland vs Africa: Size Comparison
Africa is 13.7x larger than Greenland — see the true sizes side by side with real land-area numbers.
Read →Arizona vs Italy: Size Comparison
Arizona is 1.0x larger than Italy — see the true sizes side by side with real land-area numbers.
Read →Nevada vs Spain: Size Comparison
Spain is 1.8x larger than Nevada — see the true sizes side by side with real land-area numbers.
Read →Radius vs. Drive Time vs. Straight-Line Distance: Which Map Should You Use?
A practical guide to choosing between a radius circle, road travel-time map and straight-line distance so your result matches the real question you are trying to answer.
Read →How Far Is Every US State Capital From the Coast?
All 50 US state capitals ranked by distance to the coast. Pierre, South Dakota is the most landlocked at 924.4 miles — see the full table.
Read →How to Measure Land Area on a Map: Acres, Hectares and Square Feet
Learn how map-based area measurement works, how to trace a parcel more accurately, how acres and hectares relate, and when an online estimate is not enough.
Read →How to Choose a Fair Meeting Point Between Two or More Places
A practical guide to geographic midpoints, travel-time fairness and choosing a meeting location that works in the real world rather than only on a straight-line map.
Read →Map Projections Explained: Why Every Flat World Map Distorts Something
Understand why flat maps change area, shape, distance or direction, why Mercator looks the way it does, and how to choose a projection for the job.
Read →Find My Location: GPS vs IP Address vs VPN — What's Actually Accurate?
Why your phone, your public IP, and a VPN can all report different places — and which one to trust when you need real coordinates.
Read →Drive Time Map vs Radius Circle: Which One Should You Use?
A radius is equal distance in every direction. A drive-time map follows roads and speed. Here’s when each shape answers the real question.
Read →How to Find the Latitude and Longitude of Any Place
Search an address, click a map, or use GPS — then read decimal degrees the way software expects, without swapping lat and lng.
Read →What County Am I In? How County Lookup Actually Works
County lines are legal boundaries, not vibes. How map tools resolve a point to a county — and why borders, unincorporated areas, and bad GPS fix create surprises.
Read →Free Printable Blank Maps: How to Choose Outline, Labeled, or City Variants
Classroom worksheets, sales territories, and presentation slides need different map styles. How to pick blank vs labeled vs coloured — and SVG vs PNG.
Read →Straight-Line Distance vs Road Distance: Why Your Trip Is Longer Than the Map Says
Great-circle distance is the shortest path on the globe. Roads almost never follow it. How to read both numbers without fooling yourself.
Read →What Are Plus Codes? Open Location Codes Without a Street Address
Plus Codes turn coordinates into short codes you can share by text. Where they help, where they don’t, and how to encode or decode them.
Read →How Accurate Is Browser Geolocation? A Practical Field Guide
Browser location is not one technology. Accuracy bands, permission prompts, indoor failure modes, and how to sanity-check a pin before you trust it.
Read →Moving Abroad? Compare Cities Like an Analyst
Cost indices, density, daylight curves and meeting windows: a simple framework for turning a move into a clearer comparison.
Read →Hardiness Zones & Climate Codes: Will It Grow Here?
Hardiness zones, climate classifications and microclimates answer different questions. How to use them without treating one map as the whole garden.
Read →Chasing Golden Hour: A Photographer's Solar Toolkit
Golden hour is an altitude band, not a fixed clock time. How to plan light with solar tools — windows, horizons and moon phase — instead of guessing.
Read →Planning a Road Trip With Nothing but Free Map Tools
A complete weekend-warrior workflow: stops, optimized order, fuel budget, drive-time sanity checks and a GPX file for the car — all without a single paid app.
Read →What 'As the Crow Flies' Actually Means — and When It Lies to You
Great-circle distance is the planet's honest answer, but roads, borders and rivers charge a tax. A field guide to knowing which distance your question needs.
Read →The Right Format for Every Job: GPS Files in Real Life
KML from Google My Maps, GPX from the bike computer, GeoJSON from the analyst — a practical workflow for converting without losing what matters.
Read →Reading an Isochrone Map Like a City Planner
Those lumpy drive-time shapes are the city telling you its secrets. How to read fingers, holes and lobes — and use them for real decisions.
Read →How Accurate Is Your GPS, Really? A Practical Primer
Five decimals, one metre, and other promises your phone can't keep. What GPS precision actually means, and how to store coordinates honestly.
Read →Why 'Where Am I?' Has Five Different Correct Answers
City, county, state, postcode, country: five overlapping geographies that can disagree for legitimate reasons. A gentle tour of the layers under your feet.
Read →Understanding GPS Coordinates: Formats, Datums and Precision
A practical guide to latitude/longitude: what decimal degrees and DMS really mean, why datums matter, and how many decimal places you actually need.
Read →How Far Can You See? The Quiet Math of Horizons
From a beach, a cliff or a cabin deck: horizon distance, observer height and terrain all matter. A practical walk through visibility math.
Read →KML vs. GeoJSON vs. GPX: Choosing the Right Map File Format
The practical differences between three common geographic file formats — when to use each, what can be lost in conversion, and how to move between them.
Read →Distance Calculation: Haversine, Geodesics & When It Matters
Why flat map arithmetic fails over large distances, what the haversine formula does, and when a full ellipsoidal geodesic is the better choice.
Read →Go from reading to measuring
Every guide belongs to a tool cluster. The hub has the calculators, the method notes and the limits; the guide explains why the choice matters.
- Distance Calculators29 tools
- Bearing & Midpoint18 tools
- Routes & Travel Time63 tools
- Radius & Service Area19 tools
- Area & Acreage27 tools
- Farm & Garden20 tools
- Location & Geocoding38 tools
- Coordinates64 tools
- Time Zones17 tools
- Sun & Moon28 tools
- Boundaries & Lookups40 tools
- Elevation & Terrain41 tools
- GIS Files65 tools
- Map Maker27 tools
How MapBench approaches geographic content
Methods before claims
We explain whether a result is geodesic, road-network based, browser-derived or dependent on an external public dataset.
Limitations in plain language
A precise-looking number can still be an estimate. Guides call out uncertainty, missing traffic, imagery limitations and cases where professional data is needed.
Real workflows
Content is organized around tasks such as planning a service area, comparing routes, converting GPS data or checking a parcel estimate.
Open-source context
Where a tool depends on public geographic services or datasets, we identify them on the data-sources and methodology pages.
Read our methodology →·See data sources →·Editorial policy →