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
Basis point converter
bps to percent and decimal, free
Ssamurai
POST /fin/basis-point$0.002
⚙️ Developer UtilitiesFree
Stock beta calculator
β from stock vs market returns, free
Ssamurai
POST /fin/beta-stock$0.002
⚙️ Developer UtilitiesFree
Billable hours calculator
invoice total from hourly rate
Ssamurai
POST /fin/billable-hours$0.002
⚙️ Developer UtilitiesFree
Biweekly mortgage calculator
payoff time and interest saved
Ssamurai
POST /fin/biweekly-mortgage$0.002
⚙️ Developer UtilitiesFree
Black Friday calculator
sale, coupon, final price & savings
Ssamurai
POST /fin/black-friday$0.002
⚙️ Developer UtilitiesFree
Boat loan calculator
monthly payment from amount, rate, and term
Ssamurai
POST /fin/boat-loan$0.002
⚙️ Developer UtilitiesFree
Bradford factor calculator
absence score from spells and days
Ssamurai
POST /fin/bradford-factor$0.002
⚙️ Developer UtilitiesFree
Build Back Better tax calculator
estimated federal liability
Ssamurai
POST /fin/build-back-better$0.002
⚙️ Developer UtilitiesFree
Business budget calculator
income, expenses and net
Ssamurai
POST /fin/business-budget$0.002
⚙️ Developer UtilitiesFree
CAC calculator
cost per customer from spend and acquired, free
Ssamurai
POST /fin/cac$0.002
⚙️ Developer UtilitiesFree
California stimulus check calculator
estimated MCTR payment
Ssamurai
POST /fin/california-stimulus-check$0.002
⚙️ Developer UtilitiesFree
UK capital gains tax calculator
tax owed from gain and band
Ssamurai
POST /fin/capital-gains-tax-uk$0.002
⚙️ Developer UtilitiesFree
Car depreciation calculator
current value from price, rate, and years
Ssamurai
POST /fin/car-depreciation$0.002
⚙️ Developer UtilitiesFree
Car interest calculator
total interest paid on a car loan
Ssamurai
POST /fin/car-interest$0.002
⚙️ Developer UtilitiesFree
Carry trade calculator
profit and net return from rates and FX
Ssamurai
POST /fin/carry-trade$0.002
⚙️ Developer UtilitiesFree
Cash flow to debt calculator
operating cash flow over total debt
Ssamurai
POST /fin/cash-flow-to-debt$0.002
⚙️ Developer UtilitiesFree
Cash ratio calculator
cash plus equivalents over current liabilities
Ssamurai
POST /fin/cash-ratio$0.002
⚙️ Developer UtilitiesFree
Child tax credit calculator
CTC from children, status, and AGI
Ssamurai
POST /fin/child-tax-credit$0.002
⚙️ Developer UtilitiesFree
COGS calculator
cost of goods sold from inventory, free
Ssamurai
POST /fin/cogs$0.002
⚙️ Developer UtilitiesFree
Mode calculator
find the most frequent value or values
Ssamurai
POST /stat/mode$0.002
⚙️ Developer UtilitiesFree
Normal distribution calculator
PDF or CDF from mean and σ
Ssamurai
POST /stat/normal-distribution$0.002
⚙️ Developer UtilitiesFree
Ordering numbers
sort integers, decimals and fractions
Ssamurai
POST /stat/ordering-numbers$0.002
⚙️ Developer UtilitiesFree
Permutation without repetition
P(n,r)=n!/(n−r)! count
Ssamurai
POST /stat/permutation-without-repetition$0.002
⚙️ Developer UtilitiesFree
Point estimate calculator
sample mean of a population parameter
Ssamurai
POST /stat/point-estimate$0.002
⚙️ Developer UtilitiesFree
Three events probability calculator
P(A ∪ B ∪ C)
Ssamurai
POST /stat/probability-three-events$0.002
⚙️ Developer UtilitiesFree
Range calculator
max minus min of a numeric list
Ssamurai
POST /stat/range$0.002
⚙️ Developer UtilitiesFree
Relative standard deviation
RSD% = (σ / μ) × 100
Ssamurai
POST /stat/relative-standard-deviation$0.002
⚙️ Developer UtilitiesFree
Roulette payout calculator
winnings from bet type, stake, and number
PPavilion
POST /stat/roulette-payout$0.002
⚙️ Developer UtilitiesFree
Sampling error calculator
signed sample minus population, free
Ssamurai
POST /stat/sampling-error$0.002
⚙️ Developer UtilitiesFree
Sensitivity and specificity calculator
TPR and TNR, free
PPavilion
POST /stat/sensitivity-and-specificity$0.002
⚙️ Developer UtilitiesFree
Simpson's diversity index
probability two random draws differ
Ssamurai
POST /stat/simpsons-diversity-index$0.002
⚙️ Developer UtilitiesFree
Stem-and-leaf plot calculator
text rows from numeric data
PPavilion
POST /stat/stem-and-leaf-plot$0.002
⚙️ Developer UtilitiesFree
Third quartile calculator
Q3, the 75th percentile
Ssamurai
POST /stat/third-quartile$0.002
⚙️ Developer UtilitiesFree
Two envelopes paradox calculator
switch vs keep EV
Ssamurai
POST /stat/two-envelopes-paradox$0.002
⚙️ Developer UtilitiesFree
Uniform distribution calculator
P, mean and variance from bounds
PPavilion
POST /stat/uniform-distribution$0.002
⚙️ Developer UtilitiesFree
Upper and lower fence calculator
Tukey outlier fences
Ssamurai
POST /stat/upper-lower-fence$0.002
⚙️ Developer UtilitiesFree
Wilcoxon rank-sum test calculator
statistic and p-value free
PPavilion
POST /stat/wilcoxon-rank-sum-test$0.002
⚙️ Developer UtilitiesFree
Z-test calculator
z-statistic and p-value from mean, σ and n
Ssamurai
POST /stat/z-test$0.002
⚙️ Developer UtilitiesFree
Allele frequency calculator
p and q from genotype counts
Aabuela
POST /bio/allele-frequency$0.002
⚙️ Developer UtilitiesFree
Bacteria growth calculator
final cell count from doubling time
PPavilion
POST /bio/bacteria-growth$0.002
⚙️ Developer UtilitiesFree
Bulb spacing calculator
bulbs per row and column from bed size
Aabuela
POST /bio/bulb-spacing$0.002
⚙️ Developer UtilitiesFree
Cat calorie calculator
daily kcal from weight, age, activity
PPavilion
POST /bio/cat-calorie$0.002
⚙️ Developer UtilitiesFree
Cat calorie calculator
daily kcal from weight, age and activity
Aabuela
POST /bio/catculator$0.002
⚙️ Developer UtilitiesFree
Cell doubling time calculator
Td in hours from cell counts
PPavilion
POST /bio/cell-doubling-time$0.002
⚙️ Developer UtilitiesFree
Cephalexin for dogs dosage
mg and tablets from weight
Aabuela
POST /bio/cephalexin-for-dogs-dosage$0.002
⚙️ Developer UtilitiesFree
Cricket chirp thermometer
air temperature from chirps per minute
PPavilion
POST /bio/cricket-chirp-thermometer$0.002
⚙️ Developer UtilitiesFree
DNA concentration calculator
A260 absorbance to ng/µL
Aabuela
POST /bio/dna-concentration$0.002
⚙️ Developer UtilitiesFree
Dog BMI calculator
body condition index from weight and girth
PPavilion
POST /bio/dog-bmi$0.002
⚙️ Developer UtilitiesFree
Dog food calculator
daily cups and grams from weight
Aabuela
POST /bio/dog-food$0.002
⚙️ Developer UtilitiesFree
Dog Metacam calculator
meloxicam dose in mg from weight
PPavilion
POST /bio/dog-metacam$0.002
⚙️ Developer UtilitiesFree
Dog pregnancy calculator
whelping date from mating
Aabuela
POST /bio/dog-pregnancy$0.002
⚙️ Developer UtilitiesFree
Dog water intake calculator
daily mL from weight and activity
PPavilion
POST /bio/dog-water-intake$0.002
⚙️ Developer UtilitiesFree
Feed conversion ratio calculator
FCR from feed and gain
Aabuela
POST /bio/fcr$0.002
⚙️ Developer UtilitiesFree
Grain bin calculator
cubic feet and bushels from diameter
Aabuela
POST /bio/grain-bin$0.002
⚙️ Developer UtilitiesFree
Hamster age calculator
convert months to human years
PPavilion
POST /bio/hamster-age$0.002
⚙️ Developer UtilitiesFree
Horse weight calculator
estimate from girth and length
Aabuela
POST /bio/horse-weight$0.002
⚙️ Developer UtilitiesFree
Mutation frequency calculator
mutants per cell plated
PPavilion
POST /bio/mutation-frequency$0.002
⚙️ Developer UtilitiesFree
Pet sitter rates calculator
daily rate, extra pet fee, total
Aabuela
POST /bio/pet-sitter-rates$0.002
⚙️ Developer UtilitiesFree
Pine straw calculator
bales from square footage and coverage
PPavilion
POST /bio/pine-straw$0.002
⚙️ Developer UtilitiesFree
Plants calculator
how many plants fit from area and spacing
PPavilion
POST /bio/plants$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.