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
Scientific notation for school
convert with place-value steps
Kkatherine
POST /edu/scientific-notation-school$0.002
⚙️ Developer UtilitiesFree
Script reading time by WPM
silent and spoken duration calculator
Bbarbara
POST /edu/script-reading-time$0.002
⚙️ Developer UtilitiesFree
How Many Slides Do You Need for a Presentation?
Bbarbara
POST /edu/slides-for-minutes$0.002
⚙️ Developer UtilitiesFree
Words per slide budget
script words ÷ slides for concise decks
Aabuela
POST /edu/slides-words-budget$0.002
⚙️ Developer UtilitiesFree
Speech length vs time limit checker
estimate speaking time
Ffrances
POST /edu/speech-length-check$0.002
⚙️ Developer UtilitiesFree
Speech time from syllables
estimate speaking duration by delivery rate
PPavilion
POST /edu/speech-syllable-time$0.002
⚙️ Developer UtilitiesFree
Stanine from percentile calculator
convert percentile rank to 1–9
Ffrances
POST /edu/stanine-from-percentile$0.002
⚙️ Developer UtilitiesFree
Study hours per credit calculator
weekly study time from credits
PPavilion
POST /edu/study-hours-per-credit$0.002
⚙️ Developer UtilitiesFree
Thesis length estimator
calculate words and pages by chapter
Ffrances
POST /edu/thesis-length-estimate$0.002
⚙️ Developer UtilitiesFree
Exam time per question calculator
seconds and minutes per item
PPavilion
POST /edu/time-per-question$0.002
⚙️ Developer UtilitiesFree
Unique words count calculator
distinct vs total word ratio
PPavilion
POST /edu/unique-words-count$0.002
⚙️ Developer UtilitiesFree
Vocabulary words to goal
how many more words to learn
PPavilion
POST /edu/vocab-words-to-goal$0.002
⚙️ Developer UtilitiesFree
Weighted course grade calculator
category scores and syllabus weights
PPavilion
POST /edu/weighted-course-grade$0.002
⚙️ Developer UtilitiesFree
Weighted GPA with honors calculator
AP and honors course bonuses
PPavilion
POST /edu/weighted-gpa-honors$0.002
⚙️ Developer UtilitiesFree
Weighted grade average by category calculator
Ffrances
POST /edu/weighted-grade-average$0.002
⚙️ Developer UtilitiesFree
Weighted score out of total
category grades to a mark out of N
Ssamurai
POST /edu/weighted-score-out-of$0.002
⚙️ Developer UtilitiesFree
What Percent Is X of Y? Percentage Calculator
Ffrances
POST /edu/what-percent-is$0.002
⚙️ Developer UtilitiesFree
Average words per sentence
measure sentence length and writing complexity
Ssamurai
POST /edu/words-per-sentence$0.002
⚙️ Developer UtilitiesFree
Words to pages estimator
pages from word count, font, spacing, margins
Ssamurai
POST /edu/words-to-pages$0.002
⚙️ Developer UtilitiesFree
Words to paragraphs estimator
word count to essay structure
Aabuela
POST /edu/words-to-paragraphs$0.002
⚙️ Developer UtilitiesFree
Standby power cost calculator
yearly phantom power from idle watts
Ssamurai
POST /elec/standby-power-cost$0.002
⚙️ Developer UtilitiesFree
Area by coordinates calculator
shoelace polygon area from vertices
Aabuela
POST /eng/area-coordinates$0.002
⚙️ Developer UtilitiesFree
Azimuth and distance from coordinates calculator for survey stations
Ffrances
POST /eng/azimuth-from-coords$0.002
⚙️ Developer UtilitiesFree
Band brake torque calculator
Tb = (T1 − T2) × r
Aabuela
POST /eng/band-brake-torque$0.002
⚙️ Developer UtilitiesFree
Metal bar weight by material
steel, aluminum, copper, brass
Aabuela
POST /eng/bar-weight-by-material$0.002
⚙️ Developer UtilitiesFree
Simply supported center-load deflection calculator
max δ = PL³/(48EI)
PPavilion
POST /eng/beam-ss-point-center-deflection$0.002
⚙️ Developer UtilitiesFree
Bearing life hours calculator
convert L10 million revolutions at RPM
Kkatherine
POST /eng/bearing-life-hours$0.002
⚙️ Developer UtilitiesFree
Belt Wrap Angle Calculator for Open Belt Drives
Ffrances
POST /eng/belt-wrap-angle$0.002
⚙️ Developer UtilitiesFree
Bolt group eccentric shear calculator
elastic vector critical fastener
PPavilion
POST /eng/bolt-group-eccentric$0.002
⚙️ Developer UtilitiesFree
Overhead conductor tension calculator
H = wL²/(8d)
PPavilion
POST /eng/cable-tension$0.002
⚙️ Developer UtilitiesFree
Conductor Resistance Calculator
Length, Area, and Resistivity
Kkatherine
POST /eng/conductor-resistance$0.002
⚙️ Developer UtilitiesFree
Pipe continuity velocity calculator
find outlet velocity
Kkatherine
POST /eng/continuity-velocity$0.002
⚙️ Developer UtilitiesFree
Convective Heat Transfer Calculator
Newton's Law of Cooling
Bbarbara
POST /eng/convection-newton$0.002
⚙️ Developer UtilitiesFree
Crank mechanism torque calculator
piston force, angle and radius
Kkatherine
POST /eng/crank-torque$0.002
⚙️ Developer UtilitiesFree
Critical Crack Length Calculator
Fracture Toughness
Ffrances
POST /eng/critical-crack$0.002
⚙️ Developer UtilitiesFree
Electrical demand load calculator
connected load and demand factor
Kkatherine
POST /eng/demand-load$0.002
⚙️ Developer UtilitiesFree
Direct Shear Stress Calculator for Pins, Bolts, and Rivets
Bbarbara
POST /eng/direct-shear-stress$0.002
⚙️ Developer UtilitiesFree
Duct air velocity calculator
airflow rate divided by area
Kkatherine
POST /eng/duct-velocity$0.002
⚙️ Developer UtilitiesFree
Engineering Stress from Load Calculator
Tensile Test σ = F/A₀
Bbarbara
POST /eng/engineering-stress$0.002
⚙️ Developer UtilitiesFree
Straight fin efficiency calculator
η = tanh(mL)/(mL) rectangular fin
Aabuela
POST /eng/fin-efficiency$0.002
⚙️ Developer UtilitiesFree
Fixed-fixed beam center load calculator
moments and deflection
Bbarbara
POST /eng/fixed-beam-center-load$0.002
⚙️ Developer UtilitiesFree
Flow regime from Reynolds number calculator
Ffrances
POST /eng/flow-regime$0.002
⚙️ Developer UtilitiesFree
Hydrostatic Force on an Inclined Surface Calculator
Kkatherine
POST /eng/force-inclined-surface$0.002
⚙️ Developer UtilitiesFree
Fourier Number Calculator
Transient Heat Conduction Fo
Bbarbara
POST /eng/fourier-number$0.002
⚙️ Developer UtilitiesFree
Swamee-Jain friction factor calculator for turbulent pipe flow
Bbarbara
POST /eng/friction-swamee$0.002
⚙️ Developer UtilitiesFree
Gear output speed calculator
shaft RPM from input speed and ratio
PPavilion
POST /eng/gear-output-speed$0.002
⚙️ Developer UtilitiesFree
Gear pitch diameter calculator
module and tooth count
Kkatherine
POST /eng/gear-pitch-diameter$0.002
⚙️ Developer UtilitiesFree
Pipe pressure drop from head loss calculator
ΔP = ρgh
Ffrances
POST /eng/head-loss-pressure$0.002
⚙️ Developer UtilitiesFree
Horizontal Curve Calculator
Tangent, Length and External Distance
Kkatherine
POST /eng/horizontal-curve-elements$0.002
⚙️ Developer UtilitiesFree
Height of instrument calculator
HI from benchmark and backsight
PPavilion
POST /eng/level-hi$0.002
⚙️ Developer UtilitiesFree
Map scale from measurement calculator
RF 1:N from map & ground distance
PPavilion
POST /eng/map-scale-from-measure$0.002
⚙️ Developer UtilitiesFree
Modulus of toughness estimate
strength and fracture strain
Bbarbara
POST /eng/modulus-of-toughness$0.002
⚙️ Developer UtilitiesFree
Nozzle exit velocity calculator
Torricelli √(2gh) from head
Aabuela
POST /eng/nozzle-velocity$0.002
⚙️ Developer UtilitiesFree
Heat exchanger NTU effectiveness calculator
Ffrances
POST /eng/ntu-effectiveness$0.002
⚙️ Developer UtilitiesFree
Percent Elongation Calculator for Tensile Specimens
Kkatherine
POST /eng/percent-elongation$0.002
⚙️ Developer UtilitiesFree
Pipe flow velocity calculator
average speed from Q and diameter
PPavilion
POST /eng/pipe-velocity$0.002
⚙️ Developer UtilitiesFree
Plastic Moment Capacity Calculator
Kkatherine
POST /eng/plastic-moment$0.002
⚙️ Developer UtilitiesFree
Solid Shaft Polar Moment of Inertia Calculator
Kkatherine
POST /eng/polar-moi-circle$0.002
⚙️ Developer UtilitiesFree
Pump Total Dynamic Head Calculator
Static, Friction and Velocity Head
Bbarbara
POST /eng/pump-tdh$0.002
⚙️ Developer UtilitiesFree
Thermal resistance series calculator
layered wall total R-value
Kkatherine
POST /eng/resistance-series$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.