ForHosting KIT
Everything you need.
One Kit.
Hundreds of ready-made tasks — PDF, images, audio, OCR, text AI, scraping, data and more — behind a single REST API. Send a job, get a finished result by webhook. No servers, no per-model tokens, a price you can read.
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7554ready-made tools
6channels
1API & key
$0.002per call, from
The full catalog
Search or filter by category. Every capability is its own endpoint with a published price.
⚙️ Developer UtilitiesFree
SWR from reflection coefficient calculator
VSWR and return loss free
A
POST /elec/swr-from-reflection$0.002⚙️ Developer UtilitiesFree
Haversine great-circle distance
km, mi, m between two points
S
POST /geo/haversine-distance$0.002⚙️ Developer UtilitiesFree
Central angle between two latitude longitude points
K
POST /geo/central-angle$0.002⚙️ Developer UtilitiesFree
Nearest point on polyline
closest lat/lon on a route, free
P
POST /geo/nearest-point-on-polyline$0.002⚙️ Developer UtilitiesFree
Point to infinite great-circle line distance calculator
B
POST /geo/point-to-line-distance$0.002⚙️ Developer UtilitiesFree
Bearing to 32-point compass box
degrees to NbE, NNE, NEbN… free
S
POST /geo/bearing-to-cardinal32$0.002⚙️ Developer UtilitiesFree
Final bearing at destination
great-circle arrival azimuth calculator
F
POST /geo/final-bearing$0.002⚙️ Developer UtilitiesFree
Grid bearing from true
meridian convergence converter, free
P
POST /geo/grid-bearing$0.002⚙️ Developer UtilitiesFree
Polar coordinate plane distance
law of cosines calculator
A
POST /geo/polar-distance$0.002⚙️ Developer UtilitiesFree
Relative bearing from heading
vessel target angle calculator
K
POST /geo/relative-bearing$0.002⚙️ Developer UtilitiesFree
Cube surface area calculator
6·a² from the edge length
G
POST /math/cube-surface-area$0.002⚙️ Developer UtilitiesFree
Quadrant bearing to azimuth converter
B
POST /geo/quadrant-to-azimuth$0.002⚙️ Developer UtilitiesFree
Cube volume, surface area and space diagonal from edge length
H
POST /math/cube-v-a-d$0.002⚙️ Developer UtilitiesFree
Densify a geodesic line with evenly spaced latitude/longitude vertices
F
POST /geo/densify-line$0.002⚙️ Developer UtilitiesFree
Minimum bounding rectangle calculator for 2D points
K
POST /geo/min-bounding-rectangle$0.002⚙️ Developer UtilitiesFree
Convex hull of points
monotone chain scan, free
P
POST /geo/polygon-convex-hull$0.002⚙️ Developer UtilitiesFree
Polygon edge bearings
calculate azimuth for every segment
B
POST /geo/polygon-edge-bearings$0.002⚙️ Developer UtilitiesFree
Polygon convexity test
check if a simple polygon is convex
S
POST /geo/polygon-is-convex$0.002⚙️ Developer UtilitiesFree
Spherical excess polygon area
Girard km² from lat/lon, free
A
POST /geo/spherical-polygon-area$0.002⚙️ Developer UtilitiesFree
Cube volume calculator
a³ from the side length
G
POST /math/cube-volume$0.002⚙️ Developer UtilitiesFree
Cubic feet of a cylinder
volume from radius and height in feet
H
POST /math/cubic-feet-cylinder$0.002⚙️ Developer UtilitiesFree
Geographic radians to degrees converter for coordinates
K
POST /geo/coordinate-radians-to-degrees$0.002⚙️ Developer UtilitiesFree
Degrees decimal minutes to decimal degrees converter
F
POST /geo/ddm-to-decimal$0.002⚙️ Developer UtilitiesFree
Planar polygon perimeter
projected easting/northing edge sum
S
POST /geo/polygon-perimeter-planar$0.002⚙️ Developer UtilitiesFree
Wrap longitude to 0–360°
climate and ocean dataset convention, free
A
POST /geo/wrap-longitude-360$0.002⚙️ Developer UtilitiesFree
UTM latitude band letter
C to X from latitude, free
P
POST /geo/utm-zone-letter$0.002⚙️ Developer UtilitiesFree
Web Mercator ground resolution calculator
meters per pixel
B
POST /geo/web-mercator-ground-resolution$0.002⚙️ Developer UtilitiesFree
Largest cube in a cylinder
edge and volume from radius and height
G
POST /math/cubic-in-cylinder$0.002⚙️ Developer UtilitiesFree
Albers equal-area projection calculator
lat/lon to conic X/Y, free
S
POST /geo/albers-equal-area$0.002⚙️ Developer UtilitiesFree
Geohash child cells
subdivide a geohash into 32 children
F
POST /geo/geohash-children$0.002⚙️ Developer UtilitiesFree
Hammer projection calculator
latitude and longitude to x, y
K
POST /geo/hammer-project$0.002⚙️ Developer UtilitiesFree
Point to hex grid cell
calculate axial column and row
K
POST /geo/hex-grid-cell$0.002⚙️ Developer UtilitiesFree
Orthographic projection calculator
lat/lon to globe plane, free
A
POST /geo/orthographic-project$0.002⚙️ Developer UtilitiesFree
Easting and northing to OSGB grid reference converter
F
POST /geo/osgb-grid-reference$0.002⚙️ Developer UtilitiesFree
Plate Carrée projection calculator
latitude and longitude to x and y
F
POST /geo/plate-carree-project$0.002⚙️ Developer UtilitiesFree
Shorten Plus Code
drop leading OLC digits near a reference location
S
POST /geo/plus-code-shorten$0.002⚙️ Developer UtilitiesFree
S2 cube face from lat/lon
which spherical cube face holds a coordinate
P
POST /geo/s2-face-from-latlon$0.002⚙️ Developer UtilitiesFree
Sinusoidal projection calculator
equal-area lat/lon to x,y, free
P
POST /geo/sinusoidal-project$0.002⚙️ Developer UtilitiesFree
US State Plane zone finder
state, latitude, longitude, FIPS
B
POST /geo/state-plane-zone$0.002⚙️ Developer UtilitiesFree
Slippy tile bounding box
min/max lat lon from XYZ zoom
A
POST /geo/tile-bounds$0.002⚙️ Developer UtilitiesFree
Slippy map tiles covering a bounding box
list XYZ coordinates
B
POST /geo/tiles-in-bbox$0.002⚙️ Developer UtilitiesFree
USNG grid to latitude and longitude
cell center converter
K
POST /geo/usng-to-latlon$0.002⚙️ Developer UtilitiesFree
Cubic yards of a cylinder
volume from radius and height in feet
H
POST /math/cubic-yards-cylinder$0.002⚙️ Developer UtilitiesFree
Cuboid calculator
volume and surface area, free
G
POST /math/cuboid$0.002⚙️ Developer UtilitiesFree
Cuboid volume calculator
V = l × w × h, free
H
POST /math/cuboid-volume$0.002⚙️ Developer UtilitiesFree
Cycloid
arc length, area under one arch and coordinates
G
POST /math/cycloid$0.002⚙️ Developer UtilitiesFree
ETA from distance and speed
calculate travel duration
B
POST /geo/eta-from-speed$0.002⚙️ Developer UtilitiesFree
ECEF to geodetic converter
XYZ to lat, lon, height (WGS84)
P
POST /geo/ecef-to-geodetic$0.002⚙️ Developer UtilitiesFree
Grid declination offset calculator
grid, true and magnetic north
F
POST /geo/grid-to-geographic-offset$0.002⚙️ Developer UtilitiesFree
Point of no return calculator
distance and flight time
F
POST /geo/point-of-no-return$0.002⚙️ Developer UtilitiesFree
Unit vector to latitude and longitude
3D sphere converter
K
POST /geo/unit-vector-to-latlon$0.002⚙️ Developer UtilitiesFree
Velocity made good to waypoint
VMG from speed and bearing
S
POST /geo/vmg-to-waypoint$0.002⚙️ Developer UtilitiesFree
Wind triangle solver
heading, track, TAS, GS and wind
A
POST /geo/wind-triangle$0.002⚙️ Developer UtilitiesFree
Glide distance from altitude
max range from L/D ratio, free
P
POST /geo/glide-distance$0.002⚙️ Developer UtilitiesFree
Great-circle vertex latitude calculator from point and bearing
K
POST /geo/great-circle-vertex$0.002⚙️ Developer UtilitiesFree
Next waypoint ETA calculator
distance and time remaining
F
POST /geo/next-waypoint-eta$0.002⚙️ Developer UtilitiesFree
Route total distance
sum great-circle legs between waypoints
S
POST /geo/route-total-distance$0.002⚙️ Developer UtilitiesFree
Speed made good calculator
SMG from two fixes and elapsed time
A
POST /geo/speed-made-good$0.002⚙️ Developer UtilitiesFree
Turn radius from speed, bank angle, or turn rate
B
POST /geo/turn-radius$0.002⚙️ Developer UtilitiesFree
Cyclomatic complexity calculator
M = E − N + 2P from graph counts
G
POST /math/cyclomatic-complexity$0.002No capabilities match your search.
How it works
1
Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
Pay only for what you use
No subscription. Free tools run in your browser; paid tasks draw from your balance, which never expires.
Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7500+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
Top up your balance and spend it across web, API and the app. It never expires.