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
Fuel cost calculator
trip cost free in your browser
PPavilion
POST /dev/fuel-cost$0.002
⚙️ Developer UtilitiesFree
chmod calculator
rwx to octal free in your browser
PPavilion
POST /dev/chmod-calculator$0.002
✍️ Text & AIFree
Extract emails from text
free in your browser
PPavilion
POST /text/extract-emails$0.002
⚙️ Developer UtilitiesFree
Quadratic equation solver
roots free in your browser
PPavilion
POST /dev/quadratic-equation$0.002
⚙️ Developer UtilitiesFree
Pythagorean theorem calculator
free in your browser
Ssamurai
POST /dev/pythagoras$0.002
⚙️ Developer UtilitiesFree
EV charge time calculator
free online
AAspire
POST /dev/ev-charge-time$0.002
⚙️ Developer UtilitiesFree
Inflation calculator
free online
AAspire
POST /dev/inflation-calculator$0.002
⚙️ Developer UtilitiesFree
A1C converter
educational ADA free
AAspire
POST /dev/a1c-converter$0.002
⚙️ Developer UtilitiesFree
BAC calculator
educational estimate, free online
AAspire
POST /dev/bac-calculator$0.002
⚙️ Developer UtilitiesFree
Dew point calculator
free online
AAspire
POST /dev/dew-point$0.002
⚙️ Developer UtilitiesFree
Heat index calculator
NWS free online
AAspire
POST /dev/heat-index$0.002
⚙️ Developer UtilitiesFree
Macro calculator
protein carbs fat free
AAspire
POST /dev/macro-calculator$0.002
⚙️ Developer UtilitiesFree
Moon phase calculator
free online
AAspire
POST /dev/moon-phase$0.002
⚙️ Developer UtilitiesFree
Plate calculator
barbell loading free
AAspire
POST /dev/plate-calculator$0.002
⚙️ Developer UtilitiesFree
Tire size calculator
diameter free online
AAspire
POST /dev/tire-size$0.002
⚙️ Developer UtilitiesFree
Permutation & combination calculator
free in your browser
PPavilion
POST /dev/permutation-combination$0.002
⚙️ Developer UtilitiesFree
Resistor color code calculator
free in your browser
PPavilion
POST /dev/resistor-color-code$0.002
⚙️ Developer UtilitiesFree
ROI calculator
return on investment free in your browser
PPavilion
POST /dev/roi$0.002
⚙️ Developer UtilitiesFree
Bell number calculator
free
AAspire
POST /math/bell-number$0.002
⚙️ Developer UtilitiesFree
Equilateral triangle calculator
free
AAspire
POST /math/equilateral-triangle$0.002
⚙️ Developer UtilitiesFree
Euler triangle OI distance calculator
free
AAspire
POST /math/euler-triangle-formula$0.002
⚙️ Developer UtilitiesFree
Intersecting chords calculator
free
AAspire
POST /math/intersecting-chords$0.002
⚙️ Developer UtilitiesFree
Jacobsthal number calculator
free
AAspire
POST /math/jacobsthal-number$0.002
⚙️ Developer UtilitiesFree
Oblique cylinder calculator
free online
AAspire
POST /math/oblique-cylinder$0.002
⚙️ Developer UtilitiesFree
Spherical excess calculator
Girard free
AAspire
POST /math/spherical-excess$0.002
⚙️ Developer UtilitiesFree
Subfactorial calculator
free
AAspire
POST /math/subfactorial$0.002
⚙️ Developer UtilitiesFree
Torus sector calculator
free
AAspire
POST /math/torus-sector$0.002
⚙️ Developer UtilitiesFree
Tribonacci number calculator
free
AAspire
POST /math/tribonacci-number$0.002
⚙️ Developer UtilitiesFree
Trirectangular tetrahedron calculator
free
AAspire
POST /math/trirectangular-tetrahedron$0.002
⚙️ Developer UtilitiesFree
Break even occupancy calculator
free
AAspire
POST /finance/break-even-occupancy$0.002
⚙️ Developer UtilitiesFree
Capital gains tax estimator
free
AAspire
POST /finance/capital-gains-tax$0.002
⚙️ Developer UtilitiesFree
DSCR calculator
free
AAspire
POST /finance/debt-service-coverage$0.002
⚙️ Developer UtilitiesFree
FHA MIP calculator
free
AAspire
POST /finance/fha-mip$0.002
⚙️ Developer UtilitiesFree
FIRE number calculator
free
AAspire
POST /finance/fire-number$0.002
⚙️ Developer UtilitiesFree
Hard money loan calculator
free
AAspire
POST /finance/hard-money-loan$0.002
⚙️ Developer UtilitiesFree
Interest capitalization calculator
free
AAspire
POST /finance/interest-capitalization$0.002
⚙️ Developer UtilitiesFree
Mortgage recast calculator
free
AAspire
POST /finance/mortgage-recast$0.002
⚙️ Developer UtilitiesFree
One percent rule calculator
free
AAspire
POST /finance/one-percent-rule$0.002
⚙️ Developer UtilitiesFree
Rule of 78 rebate calculator
free
AAspire
POST /finance/rule-of-78-rebate$0.002
⚙️ Developer UtilitiesFree
SS claim breakeven calculator
free
AAspire
POST /finance/ss-claim-breakeven$0.002
⚙️ Developer UtilitiesFree
French Republican calendar
free
AAspire
POST /date/french-republican$0.002
⚙️ Developer UtilitiesFree
Interval intersection
free
AAspire
POST /date/interval-intersection$0.002
⚙️ Developer UtilitiesFree
Juche era converter
free
AAspire
POST /date/juche$0.002
⚙️ Developer UtilitiesFree
Julian ↔ Gregorian converter
free
Ssamurai
POST /date/julian-calendar$0.002
⚙️ Developer UtilitiesFree
Leap seconds UTC↔TAI
free
Ssamurai
POST /date/leap-seconds$0.002
⚙️ Developer UtilitiesFree
NTP ↔ Unix timestamp
free
Ssamurai
POST /date/ntp-timestamp$0.002
⚙️ Developer UtilitiesFree
Parse relative dates
free
Ssamurai
POST /date/relative-parse$0.002
⚙️ Developer UtilitiesFree
Roman Kalends/Nones/Ides
free
Ssamurai
POST /date/roman-date$0.002
⚙️ Developer UtilitiesFree
UUID v1/v6/v7 to timestamp
free
Ssamurai
POST /date/uuid-time$0.002
⚙️ Developer UtilitiesFree
Weekday occurrence in month
free
Ssamurai
POST /date/weekday-occurrence$0.002
⚙️ Developer UtilitiesFree
Sphere calculator
volume and surface free in your browser
Ssamurai
POST /dev/sphere$0.002
⚙️ Developer UtilitiesFree
Voltage divider calculator
free in your browser
Ssamurai
POST /dev/voltage-divider$0.002
⚙️ Developer UtilitiesFree
Polygon apothem calculator
free
AAspire
POST /math/polygon-apothem$0.002
⚙️ Developer UtilitiesFree
Taxable equivalent yield calculator
free online
AAspire
POST /finance/taxable-equivalent-yield$0.002
⚙️ Developer UtilitiesFree
Abjad numeral converter free online
Ssamurai
POST /math/abjad-numerals$0.002
⚙️ Developer UtilitiesFree
Age ratio calculator
present and future ages free
Ssamurai
POST /math/age-ratio$0.002
⚙️ Developer UtilitiesFree
Boat and stream speed calculator free online
Ssamurai
POST /math/boat-stream$0.002
⚙️ Developer UtilitiesFree
CP SP MP calculator
cost selling marked price free
Ssamurai
POST /math/cp-sp-mp$0.002
⚙️ Developer UtilitiesFree
Hebrew numeral converter and gematria free
AAspire
POST /math/hebrew-numerals$0.002
⚙️ Developer UtilitiesFree
Largest remainder seat allocation free
Ssamurai
POST /math/largest-remainder$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.