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
Pentagonal prism calculator
volume and surface area from base edge and height
PPavilion
POST /geom/pentagonal-prism$0.002
⚙️ Developer UtilitiesFree
Point to line distance
perpendicular distance to ax+by+c=0
PPavilion
POST /geom/point-line-distance$0.002
⚙️ Developer UtilitiesFree
Polygon diagonals calculator
n(n−3)/2 for convex n-gons
Aabuela
POST /geom/polygon-diagonals$0.002
⚙️ Developer UtilitiesFree
Polygon perimeter from coordinates
sum edge lengths, free
AAspire
POST /geom/polygon-perimeter$0.002
⚙️ Developer UtilitiesFree
Quadrilateral area calculator
shoelace formula from four vertices
PPavilion
POST /geom/quadrilateral-area$0.002
⚙️ Developer UtilitiesFree
Rectangular prism calculator
volume, surface area, diagonal, free
AAspire
POST /geom/rectangular-prism$0.002
⚙️ Developer UtilitiesFree
Regular polygon calculator
area, perimeter, apothem, radius
Aabuela
POST /geom/regular-polygon$0.002
⚙️ Developer UtilitiesFree
Right triangle calculator
missing side, angles and area
Aabuela
POST /geom/right-triangle$0.002
⚙️ Developer UtilitiesFree
Section formula calculator
divide a segment in ratio m:n, free
AAspire
POST /geom/section-formula$0.002
⚙️ Developer UtilitiesFree
Circular sector area and perimeter
radius and angle, free
AAspire
POST /geom/sector-area$0.002
⚙️ Developer UtilitiesFree
Circular segment area
from radius and central angle
Aabuela
POST /geom/segment-area$0.002
⚙️ Developer UtilitiesFree
Sphere volume calculator
volume and surface area from radius or diameter
Aabuela
POST /geom/sphere-volume$0.002
⚙️ Developer UtilitiesFree
Spherical cap calculator
volume and curved surface area, free
AAspire
POST /geom/spherical-cap$0.002
⚙️ Developer UtilitiesFree
Spherical sector calculator
volume and surface area from radius and cap height
Aabuela
POST /geom/spherical-sector$0.002
⚙️ Developer UtilitiesFree
Tank volume calculator
filled and total volume of horizontal or vertical cylindrical tanks
PPavilion
POST /geom/tank-volume$0.002
⚙️ Developer UtilitiesFree
Tetrahedron volume calculator
surface area, height and insphere from edge length
PPavilion
POST /geom/tetrahedron$0.002
⚙️ Developer UtilitiesFree
Trapezoid area calculator
bases, height, midsegment, free
AAspire
POST /geom/trapezoid$0.002
⚙️ Developer UtilitiesFree
30-60-90 triangle calculator
sides and area from any one side
PPavilion
POST /geom/triangle-30-60-90$0.002
⚙️ Developer UtilitiesFree
AAS triangle calculator
two angles and a non-included side
Aabuela
POST /geom/triangle-aas$0.002
⚙️ Developer UtilitiesFree
Triangle area from coordinates
shoelace formula, free
AAspire
POST /geom/triangle-area-coordinates$0.002
⚙️ Developer UtilitiesFree
ASA triangle calculator
two angles and included side, free
AAspire
POST /geom/triangle-asa$0.002
⚙️ Developer UtilitiesFree
Triangle centroid calculator
average of three vertices
Aabuela
POST /geom/triangle-centroid$0.002
⚙️ Developer UtilitiesFree
Triangle orthocenter from coordinates
altitudes, free
AAspire
POST /geom/triangle-orthocenter$0.002
⚙️ Developer UtilitiesFree
SAS triangle calculator
third side, area, angles from two sides and included angle
PPavilion
POST /geom/triangle-sas$0.002
⚙️ Developer UtilitiesFree
Triangular prism calculator
volume and surface area, free
AAspire
POST /geom/triangular-prism$0.002
⚙️ Developer UtilitiesFree
Two circles intersection
find intersection points from centers and radii, free
AAspire
POST /geom/two-circles-intersection$0.002
⚙️ Developer UtilitiesFree
Wedge volume calculator
rectangular wedge from base and two heights, free
AAspire
POST /geom/wedge$0.002
⚙️ Developer UtilitiesFree
Anion gap calculator
serum AG and albumin correction, free
Aabuela
POST /health/anion-gap$0.002
⚙️ Developer UtilitiesFree
Blood pressure category calculator
ACC/AHA stages, free
Aabuela
POST /health/blood-pressure-category$0.002
⚙️ Developer UtilitiesFree
BMI Prime calculator
ratio to the 25 upper-normal threshold, free
AAspire
POST /health/bmi-prime$0.002
⚙️ Developer UtilitiesFree
Harris-Benedict BMR calculator
basal metabolic rate from weight, height, age, sex
AAspire
POST /health/bmr-harris-benedict$0.002
⚙️ Developer UtilitiesFree
Katch-McArdle BMR calculator
BMR from lean mass, free
Aabuela
POST /health/bmr-katch-mcardle$0.002
⚙️ Developer UtilitiesFree
Total body water calculator
Watson TBW volume and percentage, free
AAspire
POST /health/body-water-percentage$0.002
⚙️ Developer UtilitiesFree
Body surface area Du Bois calculator
BSA from height and weight, free
AAspire
POST /health/bsa-dubois$0.002
⚙️ Developer UtilitiesFree
Body surface area calculator
Mosteller formula BSA, free
PPavilion
POST /health/bsa-mosteller$0.002
⚙️ Developer UtilitiesFree
Calories burned calculator
MET, weight and duration, free estimate
AAspire
POST /health/calories-burned$0.002
⚙️ Developer UtilitiesFree
Child and teen BMI calculator
BMI percentile and band, free
Aabuela
POST /health/child-bmi$0.002
⚙️ Developer UtilitiesFree
Corrected calcium calculator
albumin-adjusted serum calcium, free
AAspire
POST /health/corrected-calcium$0.002
⚙️ Developer UtilitiesFree
Cycling calorie calculator
calories burned biking, free
Aabuela
POST /health/cycling-calories$0.002
⚙️ Developer UtilitiesFree
Fat-free mass index calculator
FFMI from weight, height and body fat, free
Aabuela
POST /health/fat-free-mass-index$0.002
⚙️ Developer UtilitiesFree
Daily fiber intake calculator
recommended grams from calories, free
Aabuela
POST /health/fiber-intake$0.002
⚙️ Developer UtilitiesFree
Mean arterial pressure calculator
MAP from systolic and diastolic, free
AAspire
POST /health/mean-arterial-pressure$0.002
⚙️ Developer UtilitiesFree
Pack years calculator
cigarettes and years smoked, free
PPavilion
POST /health/pack-years$0.002
⚙️ Developer UtilitiesFree
Pregnancy weight gain calculator
BMI and weeks range, free
PPavilion
POST /health/pregnancy-weight-gain$0.002
⚙️ Developer UtilitiesFree
Daily protein intake calculator
grams from weight and g/kg target, free
AAspire
POST /health/protein-intake$0.002
⚙️ Developer UtilitiesFree
Riegel race time predictor
predict finish times from a known race
AAspire
POST /health/race-time-predictor$0.002
⚙️ Developer UtilitiesFree
Running calorie calculator
calories burned from distance, weight & grade
PPavilion
POST /health/running-calories$0.002
⚙️ Developer UtilitiesFree
Running pace calculator
min/km and min/mile from distance & time
PPavilion
POST /health/running-pace$0.002
⚙️ Developer UtilitiesFree
Steps to distance calculator
convert steps to km, miles, free
AAspire
POST /health/steps-to-distance$0.002
⚙️ Developer UtilitiesFree
Swimming pace calculator
pace per 100m and 100 yards from distance & time
PPavilion
POST /health/swim-pace$0.002
⚙️ Developer UtilitiesFree
Target heart rate Karvonen calculator
reserve method, free
Aabuela
POST /health/target-hr-karvonen$0.002
⚙️ Developer UtilitiesFree
VO2 max Cooper test calculator
12-min distance estimate, free
Aabuela
POST /health/vo2max-cooper$0.002
⚙️ Developer UtilitiesFree
Waist-to-height ratio calculator
WHtR and risk category, free
AAspire
POST /health/waist-height-ratio$0.002
⚙️ Developer UtilitiesFree
Waist-to-hip ratio calculator
WHR and health-risk band, free
PPavilion
POST /health/waist-hip-ratio$0.002
⚙️ Developer UtilitiesFree
BPM to milliseconds calculator
note durations & delay times, free
PPavilion
POST /hobby/bpm-to-ms$0.002
⚙️ Developer UtilitiesFree
Cents between frequencies calculator
musical interval in cents, free
PPavilion
POST /hobby/cents-interval$0.002
⚙️ Developer UtilitiesFree
Chord note calculator
notes and intervals from root and quality
Aabuela
POST /hobby/chord-notes$0.002
⚙️ Developer UtilitiesFree
Crop factor calculator
full-frame equivalent focal length & aperture, free
AAspire
POST /hobby/crop-factor$0.002
⚙️ Developer UtilitiesFree
Depth of field calculator
near, far & total DOF, free
PPavilion
POST /hobby/depth-of-field$0.002
⚙️ Developer UtilitiesFree
Equivalent exposure calculator
match aperture, shutter & ISO, free
AAspire
POST /hobby/equivalent-exposure$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.