Distance Calculator – Measure Distance Between Points on a Map

How to Measure Distance on a Map

Place the first marker at the true starting position, add the destination, and select more waypoints if you want a traced journey rather than direct separation. Check the units in the result, and avoid treating an unsnapped straight segment as a drivable road route.

This native feature measures the manually selected segments. Standard navigation directions are separate and can calculate a different total based on the road network.

Longitude degrees do not represent constant kilometers as latitude changes, so simply subtracting latitude and longitude values is not a correct global distance calculator. Use Earth-aware geometry. Surface-distance measurements also do not include elevation changes or building floors; specialized 3D measurements need other data.

Suppose your manually measured map segments are 0.8, 1.2 and 0.5 miles. The total traced distance is 2.5 miles, equal to about 4.02 kilometers. If you later move the middle waypoint, both adjacent segment lengths may change, so the total must be recomputed rather than adjusted by a fixed amount. If the last marker returns to the first, you have completed a loop and the return leg becomes part of the sum.

When documenting route distance, distinguish “direct from A to B,” “sum of manually drawn segments” and “routed driving distance.” Users searching for how far they ran can use How Far Did I Run, which offers running-distance and pace context. For two cities with an intended meeting spot, use Halfway Point.

Distance Between Two Points Calculator

Two geographic coordinates determine the shortest path over the Earth’s curved surface, commonly approximated using Haversine distance. This is often called “as the crow flies.”

For endpoints on different sides of a city, the road route will usually be longer and may be entirely unavailable even though their geographic distance is small.

Map Distance Calculator for Multiple Points

A manually traced route is the sum of distances between consecutive map points. Add a point at major road turns or trail bends. Straight segments cutting corners underestimate actual traveled distance.

Reposition points by dragging their markers; Undo removes the last point. Start a new path with Clear. Exported paths preserve the selected coordinates.

How to Measure Distance on Google Maps

In ordinary Google Maps on desktop, right-click the first point, select “Measure distance,” then click additional points. The displayed length is based on selected segments. For road mileage, use directions/routing instead of this direct-line measurement.

For a manually traced A → B → C path, the total is d(A,B)+d(B,C), not necessarily d(A,C). A loop may start and end at the same point while still covering a substantial distance. Check whether the map was configured for straight segments or a supported road path.

Flight time and flight distance

Flight distance between airports is often described using a great-circle calculation, but the actual flight track and duration depend on air traffic, winds and route constraints. This calculator reports geographic distance; it does not compute a scheduled flight duration.

Use the Drive Time Map for network travel zones or a specialist routing service for actual driving directions.

Coordinates often use signed decimal degrees. Negative latitude indicates south of the equator and negative longitude west of Greenwich. Swapping latitude and longitude may move a point to a different continent or an invalid location. Copy full precision when a map measurement must be reproducible. If an address search returns multiple matches, select the intended street or city instead of accepting the first ambiguous result.

For a cross-country straight line, do not measure the length of a visual pixel ruler across a projected map. Use great-circle/geodesic calculation on the coordinates. A planar approximation can be acceptable at very small local scales, but latitude/longitude degrees should not be used directly as constant-distance x/y units over large regions.

Time difference and time zones

Two places can be close geographically but in different time zones, or far apart within one time zone. Date-specific daylight-saving rules also matter. A distance calculator cannot derive the exact civil-time difference without timezone data.

The shortest geographic distance between location A and location B is not necessarily the route you actually drove or walked. On the map, select a first point and then a second to obtain a direct geodesic distance. Add intermediate points to approximate a specific path. The displayed running total is the sum of distances between consecutive points, so a route A → B → C contains the A–B and B–C legs. It does not include A–C again unless you explicitly add a return segment.

For a winding path, add vertices around real bends. A rough route traced with too few points will cut across corners and usually underestimate the traveled path length. Our manual map measurement is not automatic pedestrian, cycling or road snapping. In particular, clicking two cities and reading the distance is different from asking a routing service for turn-by-turn driving mileage.

Find midpoint between places

For a halfway meeting location, open the Halfway Point Calculator. Its geographic midpoint lies halfway on a surface path; it does not guarantee equal driving time from both origins.

2D Distance Calculator

For a flat Cartesian plane, distance equals the square root of the sum of squared differences in x and y. A 3D formula additionally includes the squared z difference.

Map positions are latitude/longitude, so simple Euclidean degrees should not be multiplied directly into miles at all latitudes. Our geographic tool uses angular coordinates on a spherical model.

3D Distance Calculator

In Cartesian coordinates with three measured components, use √((x₂−x₁)²+(y₂−y₁)²+(z₂−z₁)²). For example, (0,0,0) to (1,2,2) has distance 3 units. This mathematical operation is distinct from tracing an outdoor hiking route over terrain.

Tap a second location; the map calculates distance. Add turns and bends to measure a multi-segment path. Drag the markers to refine.

Select miles or kilometers, examine total path and segment distance, then export as GeoJSON/KML or copy the link.

Distance Based on Latitude and Longitude

Convert geographic coordinates to radians, then use a spherical great-circle calculation such as Haversine, with an explicitly stated Earth-radius assumption. Results are approximate relative to ellipsoidal geodesic methods, especially for high-precision surveying.

Distance on Map

Unit conversions do not imply a travel route.

Distance in a coordinate system

Projected coordinates in meters allow planar geometry within the projection’s valid region; raw longitude/latitude must not be treated as ordinary x/y meters. The chosen projection and distance metric determine the size and meaning of errors.

Distance between two points on Earth's surface

A geographic distance measured along Earth’s surface is different from a straight line through the planet. Our map mode displays approximate surface distance and converts it between kilometers, miles and nautical miles.

Straight-Line Distance vs Driving and Walking Distance

For a manually traced A → B → C path, the total is d(A,B)+d(B,C), not necessarily d(A,C). A loop may start and end at the same point while still covering a substantial distance. Check whether the map was configured for straight segments or a supported road path.

Distance Conversion Table: Miles, KM and Meters

A route A–B–C is measured by summing the A–B and B–C segments; the direct A–C line may be shorter.

How Accurate Is a Map Distance Calculator?

Haversine uses an ideal spherical Earth. It is appropriate for approximate map distances, but a precise geodesic on an ellipsoid can differ slightly.

Geocoding may place an address at a building center, road interpolation point or city center. Select exact coordinates for repeatable geographic results.

Use My location only if you choose to share device coordinates with the browser. Without location permission, tap the map or search an address.

A blue-dot location is an estimate and should not be treated as a legal parcel corner, survey control point or precise place boundary.

Zoom into the route, select unambiguous points and verify their position after any address lookup. Modern phone GPS may give an approximate center rather than an exact street entrance. Entering latitude/longitude is useful for repeatable analysis when several streets share an address or a property lacks a well-defined street number. Record the unit and precision rather than implying centimeter accuracy from a map result displayed to six decimal places.

If you need a land-area estimate, a line is insufficient: close a polygon and use the Area Calculator. If you need a fixed buffer around a location, use a radius map. Those two questions concern fundamentally different geometries, even if all three start with the same map interface.

Frequently Asked Questions