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
Get your API key Browse the catalog
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_density →New⚙️ Developer UtilitiesVoltage regulation calculator% from no-load and full-load VSsamurai$0.002Open phys.voltage_regulation →New⚙️ Developer UtilitiesVickers hardness number calculatorHV from force and diagonalPPavilion$0.002Open phys.vickers_hardness_number →New⚙️ Developer UtilitiesVelocity calculatoraverage v = d/t in metres per secondAabuela$0.002Open phys.velocity →New⚙️ Developer UtilitiesValve flow coefficient calculatorCv from GPM, ΔP and GSsamurai$0.002Open phys.valve_flow_coefficient →New⚙️ Developer UtilitiesBarrel twist rate calculatorGreenhill formula, one turn per inchPPavilion$0.002Open phys.twist_rate →New⚙️ Developer UtilitiesTrue strain calculatorε_t = ln(1+ε) from engineering strainAabuela$0.002Open phys.true_strain →New⚙️ Developer UtilitiesTransmission coefficient calculatorpower T from η₁, η₂Ssamurai$0.002Open phys.transmission →New⚙️ Developer UtilitiesTorsional stiffness calculatorκ = GJ/L in N·m/rad, freePPavilion$0.002Open phys.torsional_stiffness →New⚙️ Developer UtilitiesTorsional spring calculatorκ = E d⁴ / (64 D N), N·mm/radAabuela$0.002Open phys.torsional_spring →New⚙️ Developer UtilitiesToilet paper race mass moment of inertiaI = ½m(ri²+ro²)Ssamurai$0.002Open phys.toilet_paper_race_mass_moment_inertia →New⚙️ Developer UtilitiesTime dilation calculatordilated time from proper time and velocityPPavilion$0.002Open phys.time_dilation →

Popular capabilities

Loved right now, by real traffic.

The full catalog

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

⚙️ Developer UtilitiesFree
Simpson index calculator
species dominance and diversity from abundances
Ssamurai
POST /bio/simpson-index-ecology$0.002
⚙️ Developer UtilitiesFree
Single-tube dilution factor calculator
sample and final volume
Bbarbara
POST /bio/single-tube-dilution-factor$0.002
⚙️ Developer UtilitiesFree
Species Richness Count Calculator
Bbarbara
POST /bio/species-richness$0.002
⚙️ Developer UtilitiesFree
Specific growth rate mu calculator
microbial log-phase growth
Bbarbara
POST /bio/specific-growth-rate-mu$0.002
⚙️ Developer UtilitiesFree
Thermal z-value calculator
temperature change for one log D
PPavilion
POST /bio/thermal-z-value$0.002
⚙️ Developer UtilitiesFree
Total Row Length Calculator
Kkatherine
POST /bio/total-row-length$0.002
⚙️ Developer UtilitiesFree
Trophic energy transfer calculator
10% ecological efficiency rule
PPavilion
POST /bio/trophic-energy-transfer$0.002
⚙️ Developer UtilitiesFree
Two-trait combined probability calculator
inherited traits
Ffrances
POST /bio/two-trait-combined-probability$0.002
⚙️ Developer UtilitiesFree
Weaning Weight Ratio Calculator for Contemporary Groups
Bbarbara
POST /bio/weaning-weight-ratio$0.002
⚙️ Developer UtilitiesFree
Y-Linked Inheritance Probability Calculator for Sons and Daughters
Bbarbara
POST /bio/y-linked-inheritance$0.002
⚙️ Developer UtilitiesFree
Agenda end time calculator
find when your meeting finishes
Ffrances
POST /biz/agenda-end-time$0.002
⚙️ Developer UtilitiesFree
Attendee hourly cost calculator
salary plus overhead
Ffrances
POST /biz/attendee-hourly-cost$0.002
⚙️ Developer UtilitiesFree
Backlog completion sprint count calculator
Kkatherine
POST /biz/backlog-completion-sprints$0.002
⚙️ Developer UtilitiesFree
Context switching time loss calculator
minutes lost to interruptions
PPavilion
POST /biz/context-switch-loss$0.002
⚙️ Developer UtilitiesFree
Eat the frog order
sort tasks hardest first free
Aabuela
POST /biz/eat-the-frog-order$0.002
⚙️ Developer UtilitiesFree
Eisenhower priority classifier
do, schedule, delegate, or delete
Aabuela
POST /biz/eisenhower-classify$0.002
⚙️ Developer UtilitiesFree
FTE headcount calculator
full-time equivalent from weekly hours
PPavilion
POST /biz/fte-headcount$0.002
⚙️ Developer UtilitiesFree
Gantt chart bar duration calculator
calendar or working days
Aabuela
POST /biz/gantt-bar-duration$0.002
⚙️ Developer UtilitiesFree
Goal completion date calculator
finish date from daily progress rate
PPavilion
POST /biz/goal-completion-date$0.002
⚙️ Developer UtilitiesFree
66-Day Habit Target Date Calculator
Ffrances
POST /biz/habit-66-days$0.002
⚙️ Developer UtilitiesFree
Inbox zero processing time calculator
Ffrances
POST /biz/inbox-zero-time$0.002
⚙️ Developer UtilitiesFree
Meeting cost per minute calculator for teams
Bbarbara
POST /biz/meeting-cost-per-minute$0.002
⚙️ Developer UtilitiesFree
Person-hours effort calculator for project labor
Bbarbara
POST /biz/person-hours-effort$0.002
⚙️ Developer UtilitiesFree
Pomodoro Total Break Time Calculator
Short and Long Breaks
Kkatherine
POST /biz/pomodoro-break-time$0.002
⚙️ Developer UtilitiesFree
Rotating meeting facilitator calculator
round-robin meeting owner
Ssamurai
POST /biz/rotating-meeting-owner$0.002
⚙️ Developer UtilitiesFree
Rotating shift schedule planner
four-on four-off roster from a cycle
PPavilion
POST /biz/rotating-shift$0.002
⚙️ Developer UtilitiesFree
Schedule variance calculator
SV and SPI from EV and PV
Aabuela
POST /biz/schedule-variance$0.002
⚙️ Developer UtilitiesFree
Tasks per day target calculator
finish by your deadline
Kkatherine
POST /biz/tasks-per-day-target$0.002
⚙️ Developer UtilitiesFree
Team sprint capacity calculator
hours from headcount and focus factor
Ssamurai
POST /biz/team-capacity-sprint$0.002
⚙️ Developer UtilitiesFree
Time Blocks per Day Calculator
Plan Focus Time After Breaks
Bbarbara
POST /biz/time-blocks-per-day$0.002
⚙️ Developer UtilitiesFree
Timebox end time calculator
find a hard stop with buffer
Bbarbara
POST /biz/timebox-end$0.002
⚙️ Developer UtilitiesFree
Two-minute rule task counter
count GTD quick wins and total time
Ssamurai
POST /biz/two-minute-rule$0.002
⚙️ Developer UtilitiesFree
Age in years, months and days calculator
exact civil age from two dates
Aabuela
POST /date/age-months-days$0.002
⚙️ Developer UtilitiesFree
Age in Total Seconds Calculator
Seconds Lived
Bbarbara
POST /date/age-total-seconds$0.002
⚙️ Developer UtilitiesFree
Which anniversary number calculator
work anniversary from hire date
PPavilion
POST /date/anniversary-number$0.002
⚙️ Developer UtilitiesFree
Project business days calculator
working days between start and end
PPavilion
POST /date/business-days-project$0.002
⚙️ Developer UtilitiesFree
Days until retirement age calculator
count days left to retire
Ssamurai
POST /date/days-to-retirement$0.002
⚙️ Developer UtilitiesFree
Local time from UTC offset calculator
convert UTC to city time
Kkatherine
POST /date/local-time-from-offset$0.002
⚙️ Developer UtilitiesFree
Next birthday countdown calculator
days until your birthday
Kkatherine
POST /date/next-birthday-countdown$0.002
⚙️ Developer UtilitiesFree
Quarters elapsed in fiscal year calculator
elapsed and remaining
Ffrances
POST /date/quarters-elapsed$0.002
⚙️ Developer UtilitiesFree
Ship-by date calculator
latest working day to ship for delivery
PPavilion
POST /date/ship-by-date$0.002
⚙️ Developer UtilitiesFree
Weekends Until Date Calculator
Count Full Weekends
Kkatherine
POST /date/weekends-until$0.002
⚙️ Developer UtilitiesFree
Working days in month calculator
Mon–Fri count with holidays
PPavilion
POST /date/working-days-this-month$0.002
⚙️ Developer UtilitiesFree
Years of service calculator
completed tenure from hire to reference date
Aabuela
POST /date/years-of-service$0.002
📄 Documents & PDFFree
Business cards per sheet calculator
compare both orientations
Bbarbara
POST /doc/business-cards-per-sheet$0.002
📄 Documents & PDFFree
Color vs black and white print cost calculator
Kkatherine
POST /doc/color-vs-bw-cost$0.002
📄 Documents & PDFFree
Labels per sheet calculator
rows, columns, and total
Bbarbara
POST /doc/labels-per-sheet$0.002
📄 Documents & PDFFree
Paper needed for copies calculator
sheets and reams for a print run
Ssamurai
POST /doc/paper-for-copies$0.002
📄 Documents & PDFFree
Paper stack height calculator
height from sheet count and thickness
PPavilion
POST /doc/paper-stack-height$0.002
📄 Documents & PDFFree
Print run ink usage calculator
coverage × pages to ml
Aabuela
POST /doc/print-run-ink$0.002
📄 Documents & PDFFree
Toner cost per page calculator
standard vs high-yield, free
Aabuela
POST /doc/toner-cost-per-page$0.002
⚙️ Developer UtilitiesFree
Dry air density calculator
pressure and temperature to kg/m³
Bbarbara
POST /earth/air-density-dry$0.002
⚙️ Developer UtilitiesFree
Air density ratio to sea level calculator from pressure and temperature
Ffrances
POST /earth/air-density-ratio$0.002
⚙️ Developer UtilitiesFree
Surface Albedo Reflected Radiation Calculator
Ffrances
POST /earth/albedo-reflected-radiation$0.002
⚙️ Developer UtilitiesFree
Air quality index from carbon monoxide
EPA AQI CO calculator
Ssamurai
POST /earth/aqi-co$0.002
⚙️ Developer UtilitiesFree
Gutenberg-Richter b Value Calculator
Ffrances
POST /earth/b-value-gutenberg-richter$0.002
⚙️ Developer UtilitiesFree
Betz Limit Maximum Wind Power Calculator
Ffrances
POST /earth/betz-limit-power$0.002
⚙️ Developer UtilitiesFree
Flight carbon footprint calculator
CO₂e per passenger from distance
PPavilion
POST /earth/carbon-footprint-flight$0.002
⚙️ Developer UtilitiesFree
Climate Running Mean Smoother Calculator
Bbarbara
POST /earth/climate-moving-average$0.002
⚙️ Developer UtilitiesFree
CO2 Offset Tree Equivalent Calculator
Trees Needed per Year
Kkatherine
POST /earth/co2-tree-equivalent$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.

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.

Recharge balance