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.

REST APILive
EmailLive
Webforhosting.com/kitLive
TelegramLive
iOS & AndroidBuilding
WhatsAppComing
7554ready-made tools
6channels
1API & key
$0.002per call, from

New capabilities

Fresh in the kit — just landed.

New⚙️ Developer UtilitiesVolume to density calculatorρ=m/V from mass and volumeAabuela$0.002Open phys.volume_to_densityNew⚙️ Developer UtilitiesVoltage regulation calculator% from no-load and full-load VSsamurai$0.002Open phys.voltage_regulationNew⚙️ Developer UtilitiesVickers hardness number calculatorHV from force and diagonalPPavilion$0.002Open phys.vickers_hardness_numberNew⚙️ Developer UtilitiesVelocity calculatoraverage v = d/t in metres per secondAabuela$0.002Open phys.velocityNew⚙️ Developer UtilitiesValve flow coefficient calculatorCv from GPM, ΔP and GSsamurai$0.002Open phys.valve_flow_coefficientNew⚙️ Developer UtilitiesBarrel twist rate calculatorGreenhill formula, one turn per inchPPavilion$0.002Open phys.twist_rateNew⚙️ Developer UtilitiesTrue strain calculatorε_t = ln(1+ε) from engineering strainAabuela$0.002Open phys.true_strainNew⚙️ Developer UtilitiesTransmission coefficient calculatorpower T from η₁, η₂Ssamurai$0.002Open phys.transmissionNew⚙️ Developer UtilitiesTorsional stiffness calculatorκ = GJ/L in N·m/rad, freePPavilion$0.002Open phys.torsional_stiffnessNew⚙️ Developer UtilitiesTorsional spring calculatorκ = E d⁴ / (64 D N), N·mm/radAabuela$0.002Open phys.torsional_springNew⚙️ Developer UtilitiesToilet paper race mass moment of inertiaI = ½m(ri²+ro²)Ssamurai$0.002Open phys.toilet_paper_race_mass_moment_inertiaNew⚙️ Developer UtilitiesTime dilation calculatordilated time from proper time and velocityPPavilion$0.002Open phys.time_dilation

The full catalog

Search or filter by category. Every capability is its own endpoint with a published price.

⚙️ Developer UtilitiesFree
UTM to lat/lon converter
zone, easting, northing to WGS84, free
Ssamurai
POST /geo/utm-to-latlon$0.002
⚙️ Developer UtilitiesFree
Web Mercator projection calculator
lat/lon to EPSG:3857 X/Y meters, free
Ssamurai
POST /geo/web-mercator-project$0.002
⚙️ Developer UtilitiesFree
Chord length calculator
from radius and angle or distance to center
Ssamurai
POST /geom/chord-length$0.002
⚙️ Developer UtilitiesFree
Circle through three points
find center and radius from three coordinates
Ssamurai
POST /geom/circle-from-3-points$0.002
⚙️ Developer UtilitiesFree
Cone volume calculator
volume, slant height, lateral and total surface
Ssamurai
POST /geom/cone$0.002
⚙️ Developer UtilitiesFree
Dodecahedron calculator
volume and surface area from edge length
Ssamurai
POST /geom/dodecahedron$0.002
⚙️ Developer UtilitiesFree
Ellipse calculator
area, Ramanujan perimeter, eccentricity, foci
Ssamurai
POST /geom/ellipse$0.002
⚙️ Developer UtilitiesFree
Line intersection calculator
two lines in slope-intercept or standard
Ssamurai
POST /geom/line-intersection$0.002
⚙️ Developer UtilitiesFree
Pipe volume calculator
internal and material volume from inner and outer
Ssamurai
POST /geom/pipe-volume$0.002
⚙️ Developer UtilitiesFree
Polygon area calculator
shoelace formula from ordered vertices
Ssamurai
POST /geom/polygon-area-shoelace$0.002
⚙️ Developer UtilitiesFree
Prism surface area calculator
lateral and total area from perimeter
Ssamurai
POST /geom/prism-surface$0.002
⚙️ Developer UtilitiesFree
Pyramid volume calculator
volume, slant height and surface area
Ssamurai
POST /geom/pyramid$0.002
⚙️ Developer UtilitiesFree
Rhombus calculator
area, perimeter, and side from diagonals or angle
Ssamurai
POST /geom/rhombus$0.002
⚙️ Developer UtilitiesFree
Slope calculator
line slope and inclination angle from two points
Ssamurai
POST /geom/slope$0.002
⚙️ Developer UtilitiesFree
Spherical segment calculator
volume and lateral zone area from radius
Ssamurai
POST /geom/spherical-segment$0.002
⚙️ Developer UtilitiesFree
Square pyramid volume
slant height, lateral and total surface area
Ssamurai
POST /geom/square-pyramid-solver$0.002
⚙️ Developer UtilitiesFree
Torus volume calculator
volume and surface area from tube and center
Ssamurai
POST /geom/torus$0.002
⚙️ Developer UtilitiesFree
45-45-90 triangle calculator
legs, hypotenuse, and area from one side
Ssamurai
POST /geom/triangle-45-45-90$0.002
⚙️ Developer UtilitiesFree
Circumcenter calculator
center and radius of a triangle's circumcircle
Ssamurai
POST /geom/triangle-circumcenter$0.002
⚙️ Developer UtilitiesFree
SSA triangle calculator
ambiguous case, zero one or two solutions
Ssamurai
POST /geom/triangle-ssa$0.002
⚙️ Developer UtilitiesFree
Calorie deficit calculator
daily intake from weight-loss goal, free
Ssamurai
POST /health/calorie-deficit$0.002
⚙️ Developer UtilitiesFree
Cycling speed from power calculator
watts, weight, grade & CdA, free
Ssamurai
POST /health/cycling-speed-power$0.002
⚙️ Developer UtilitiesFree
Body frame size calculator
small, medium or large from height &, free
Ssamurai
POST /health/frame-size$0.002
⚙️ Developer UtilitiesFree
Lean body mass calculator
Boer formula from weight, height & sex, free
Ssamurai
POST /health/lean-body-mass$0.002
⚙️ Developer UtilitiesFree
Maximum heart rate calculator
Fox, Tanaka, Gulati formulas free
Ssamurai
POST /health/max-heart-rate$0.002
⚙️ Developer UtilitiesFree
Pace to speed converter
min/km or min/mi to km/h and mph, free
Ssamurai
POST /health/pace-to-speed$0.002
⚙️ Developer UtilitiesFree
Pulse pressure calculator
systolic minus diastolic, free
Ssamurai
POST /health/pulse-pressure$0.002
⚙️ Developer UtilitiesFree
Swimming calorie calculator
calories burned by duration, weight
Ssamurai
POST /health/swimming-calories$0.002
⚙️ Developer UtilitiesFree
Rockport one-mile walk VO2 max calculator
free estimate
Ssamurai
POST /health/vo2max-rockport$0.002
⚙️ Developer UtilitiesFree
Walking calorie calculator
calories burned from distance, pace, weight
Ssamurai
POST /health/walking-calories$0.002
⚙️ Developer UtilitiesFree
Guitar capo key calculator
sounding key and chords from shapes and fret
Ssamurai
POST /hobby/capo-key$0.002
⚙️ Developer UtilitiesFree
Crochet yarn estimator
length from dimensions, gauge and yardage
Ssamurai
POST /hobby/crochet-yarn$0.002
⚙️ Developer UtilitiesFree
Dice probability calculator
exact P(sum) for n dice, free
Ssamurai
POST /hobby/dice-probability$0.002
⚙️ Developer UtilitiesFree
Flash guide number calculator
aperture or distance from GN and ISO
Ssamurai
POST /hobby/flash-guide-number$0.002
⚙️ Developer UtilitiesFree
Frequency to note calculator
nearest note, octave and cents from Hz
Ssamurai
POST /hobby/frequency-to-note$0.002
⚙️ Developer UtilitiesFree
Hyperfocal distance calculator
H and near limit from f, N, CoC
Ssamurai
POST /hobby/hyperfocal$0.002
⚙️ Developer UtilitiesFree
Line height calculator
px from font size and ratio, free
Ssamurai
POST /hobby/line-height$0.002
⚙️ Developer UtilitiesFree
500 rule calculator
max shutter before star trails (focal × crop)
Ssamurai
POST /hobby/rule-500$0.002
⚙️ Developer UtilitiesFree
Baseboard trim calculator
pieces from room perimeter and door, free
Ssamurai
POST /home/baseboard$0.002
⚙️ Developer UtilitiesFree
Brick calculator
bricks needed from wall area, free
Ssamurai
POST /home/bricks$0.002
⚙️ Developer UtilitiesFree
Drywall sheet calculator
sheets and screws from wall and ceiling, free
Ssamurai
POST /home/drywall$0.002
⚙️ Developer UtilitiesFree
Fence picket calculator
pickets from length, width and gap, free
Ssamurai
POST /home/fence-pickets$0.002
⚙️ Developer UtilitiesFree
Grass seed calculator
seed amount from lawn area and rate, free
Ssamurai
POST /home/grass-seed$0.002
⚙️ Developer UtilitiesFree
Mulch calculator
cubic yards and bags from bed area and depth, free
Ssamurai
POST /home/mulch$0.002
⚙️ Developer UtilitiesFree
Paint quantity calculator
liters from wall area or room size, free
Ssamurai
POST /home/paint-needed$0.002
⚙️ Developer UtilitiesFree
Rafter length calculator
common rafter from span, free
Ssamurai
POST /home/rafter-length$0.002
⚙️ Developer UtilitiesFree
Retaining wall block calculator
blocks and courses from length, free
Ssamurai
POST /home/retaining-wall-blocks$0.002
⚙️ Developer UtilitiesFree
Tile grout calculator
kg from tile size, joint width and area, free
Ssamurai
POST /home/tile-grout$0.002
⚙️ Developer UtilitiesFree
Room wall area calculator
net paintable walls from L×W×H, free
Ssamurai
POST /home/wall-area$0.002
⚙️ Developer UtilitiesFree
Cost per day calculator
annual price to daily, weekly, monthly, free
Ssamurai
POST /life/cost-per-day$0.002
⚙️ Developer UtilitiesFree
Cost per use calculator
price divided by expected uses, free
Ssamurai
POST /life/cost-per-use$0.002
⚙️ Developer UtilitiesFree
Emergency fund calculator
months of essential expenses, free
Ssamurai
POST /life/emergency-fund$0.002
⚙️ Developer UtilitiesFree
Hourly to salary converter
annual pay from wage, hours, weeks free
Ssamurai
POST /life/hourly-to-salary$0.002
⚙️ Developer UtilitiesFree
Reverse sales tax calculator
pre-tax price from tax-inclusive total, free
Ssamurai
POST /life/reverse-sales-tax$0.002
⚙️ Developer UtilitiesFree
Rule of 72 calculator
years to double at a growth rate, free
Ssamurai
POST /life/rule-of-72$0.002
⚙️ Developer UtilitiesFree
Geometric sequence calculator
n-th term and finite sum, free
Ssamurai
POST /math/geometric-sequence$0.002
⚙️ Developer UtilitiesFree
Pell number calculator
P_n = 2P_{n-1}+P_{n-2}, free bigint
Ssamurai
POST /math/pell-number$0.002
⚙️ Developer UtilitiesFree
Perfect square checker
n-th square and isqrt test, free
Ssamurai
POST /math/square-number$0.002
⚙️ Developer UtilitiesFree
Sum of first n cubes
1³+…+n³ = (n(n+1)/2)², free
Ssamurai
POST /math/sum-of-cubes$0.002
⚙️ Developer UtilitiesFree
Superfactorial calculator
product of first n factorials, free bigint
Ssamurai
POST /math/superfactorial$0.002

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.

Balance
$10.00+

Top up your balance and spend it across web, API and the app. It never expires.