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
UUID format validator
check version, variant and canonical form
Ffrances
POST /dev/uuid-validate$0.002
⚙️ Developer UtilitiesFree
Acronym Generator for Projects, Variables, and Constants
Ffrances
POST /dev/acronym-generate$0.002
⚙️ Developer UtilitiesFree
Hamming ECC parity bits calculator
how many r for m data bits
Aabuela
POST /dev/ecc-parity-bits$0.002
⚙️ Developer UtilitiesFree
Fenwick tree index calculator
parent & next via LSB
Ssamurai
POST /dev/fenwick-index$0.002
⚙️ Developer UtilitiesFree
HTTP Range header calculator
parse and build byte ranges
PPavilion
POST /dev/http-range-header$0.002
⚙️ Developer UtilitiesFree
IPv6 to binary converter
expand an address to 128 bits
Bbarbara
POST /dev/ipv6-to-binary$0.002
⚙️ Developer UtilitiesFree
Quarterly Compound Interest Calculator
Future Value
Kkatherine
POST /finance/compound-interest-quarterly$0.002
⚙️ Developer UtilitiesFree
Effective Annual Rate Calculator
Convert Nominal Rate to EAR
Bbarbara
POST /finance/effective-annual-rate$0.002
⚙️ Developer UtilitiesFree
Rule of 72 required rate
annual return to double in N years, free
Ssamurai
POST /finance/rule-of-72-rate$0.002
⚙️ Developer UtilitiesFree
Annuity payment from future value calculator
Bbarbara
POST /finance/annuity-payment-from-fv$0.002
⚙️ Developer UtilitiesFree
Effective rate including fees calculator
all-in annual rate
Ssamurai
POST /finance/effective-rate-with-fees$0.002
⚙️ Developer UtilitiesFree
Future Value of Ordinary Annuity Calculator
Ffrances
POST /finance/future-value-annuity-ordinary$0.002
⚙️ Developer UtilitiesFree
Implied interest rate calculator
rate from PV, FV and periods
Aabuela
POST /finance/interest-rate-from-pv-fv$0.002
⚙️ Developer UtilitiesFree
Loan refinance savings calculator
compare payments and interest
Ffrances
POST /finance/loan-refinance-savings$0.002
⚙️ Developer UtilitiesFree
Loan total interest calculator
fixed-rate amortizing loan cost
PPavilion
POST /finance/loan-total-interest$0.002
⚙️ Developer UtilitiesFree
Negative Amortization Balance Calculator
Kkatherine
POST /finance/negative-amortization-balance$0.002
⚙️ Developer UtilitiesFree
Perpetuity Present Value Calculator
Kkatherine
POST /finance/perpetuity-present-value$0.002
⚙️ Developer UtilitiesFree
Student Loan Payment Calculator
Monthly Payment and Total Repayment
Bbarbara
POST /finance/student-loan-payment$0.002
⚙️ Developer UtilitiesFree
Loan APR from fees calculator
true APR with financed fees
Aabuela
POST /finance/loan-apr-from-fees$0.002
⚙️ Developer UtilitiesFree
15 vs 30 year mortgage calculator
compare payment and interest
Bbarbara
POST /finance/mortgage-15-vs-30$0.002
⚙️ Developer UtilitiesFree
Home affordability calculator
estimate your maximum home price
Kkatherine
POST /finance/mortgage-affordability$0.002
⚙️ Developer UtilitiesFree
Mortgage PMI cost calculator
monthly PMI until cancel
PPavilion
POST /finance/mortgage-pmi-estimate$0.002
⚙️ Developer UtilitiesFree
Discount Points Break-Even Calculator
Ffrances
POST /finance/mortgage-points-breakeven-months$0.002
⚙️ Developer UtilitiesFree
Rule of 78 interest schedule calculator
sum-of-digits allocation
Ssamurai
POST /finance/rule-of-78-interest$0.002
⚙️ Developer UtilitiesFree
Second mortgage payment calculator
monthly payment and total interest
Ssamurai
POST /finance/second-mortgage-payment$0.002
⚙️ Developer UtilitiesFree
Annualized return calculator
total return to yearly rate
Aabuela
POST /finance/annualized-return$0.002
⚙️ Developer UtilitiesFree
Dividend Income Target Calculator
Kkatherine
POST /finance/dividend-income-needed$0.002
⚙️ Developer UtilitiesFree
Dividend Reinvestment (DRIP) Calculator
Ffrances
POST /finance/drip-reinvestment$0.002
⚙️ Developer UtilitiesFree
Biweekly Mortgage Payoff Calculator
Interest and Time Saved
Ffrances
POST /finance/mortgage-biweekly$0.002
⚙️ Developer UtilitiesFree
Mortgage prepayment penalty calculator
percent of balance
PPavilion
POST /finance/mortgage-prepayment-penalty$0.002
⚙️ Developer UtilitiesFree
Reverse mortgage payout calculator
estimate proceeds
Kkatherine
POST /finance/reverse-mortgage-estimate$0.002
⚙️ Developer UtilitiesFree
Four percent rule calculator
safe retirement withdrawal & nest egg
Ssamurai
POST /finance/rule-of-4-percent$0.002
⚙️ Developer UtilitiesFree
Time-weighted return calculator
chain portfolio returns
Bbarbara
POST /finance/time-weighted-return$0.002
⚙️ Developer UtilitiesFree
Yield to call calculator
calculate a callable bond's return
Bbarbara
POST /finance/bond-yield-to-call$0.002
⚙️ Developer UtilitiesFree
Expense ratio return drag calculator
fee impact on fund returns
Ssamurai
POST /finance/expense-ratio-drag$0.002
⚙️ Developer UtilitiesFree
Margin of safety price calculator
intrinsic value vs market
Aabuela
POST /finance/margin-of-safety-price$0.002
⚙️ Developer UtilitiesFree
PEG Ratio Calculator
Price/Earnings-to-Growth Ratio
Bbarbara
POST /finance/peg-ratio$0.002
⚙️ Developer UtilitiesFree
Stock profit loss calculator
net P&L and percent return on a trade
PPavilion
POST /finance/stock-profit-loss$0.002
⚙️ Developer UtilitiesFree
Zero-coupon bond price calculator
PV from face, yield, years
PPavilion
POST /finance/zero-coupon-bond-price$0.002
⚙️ Developer UtilitiesFree
Bond convexity calculator
duration-adjusted price change estimate
Aabuela
POST /finance/bond-convexity$0.002
⚙️ Developer UtilitiesFree
Employer 401(k) match calculator
annual match from salary & formula
Ssamurai
POST /finance/employer-match-value$0.002
⚙️ Developer UtilitiesFree
Retirement contribution gap calculator
Bbarbara
POST /finance/retirement-contribution-gap$0.002
⚙️ Developer UtilitiesFree
Retirement savings by age calculator
salary-multiple benchmark, free
PPavilion
POST /finance/retirement-savings-by-age$0.002
⚙️ Developer UtilitiesFree
Required minimum distribution calculator
Ffrances
POST /finance/rmd-calculator$0.002
⚙️ Developer UtilitiesFree
Safe withdrawal rate calculator
test retirement sustainability
Aabuela
POST /finance/safe-withdrawal-rate-test$0.002
⚙️ Developer UtilitiesFree
Social Security benefit estimator
calculate PIA from AIME
Kkatherine
POST /finance/social-security-estimate$0.002
⚙️ Developer UtilitiesFree
Double declining balance calculator
depreciation schedule
Aabuela
POST /finance/depreciation-double-declining$0.002
⚙️ Developer UtilitiesFree
Straight-line depreciation calculator
annual expense and book value
PPavilion
POST /finance/depreciation-straight-line$0.002
⚙️ Developer UtilitiesFree
Gross-up salary calculator
gross pay from target net income
Ffrances
POST /finance/gross-from-net-income$0.002
⚙️ Developer UtilitiesFree
Progressive income tax calculator
tax from brackets & taxable income
Ssamurai
POST /finance/income-tax-brackets$0.002
⚙️ Developer UtilitiesFree
Take-home pay calculator
estimate your net paycheck
Bbarbara
POST /finance/take-home-pay$0.002
⚙️ Developer UtilitiesFree
Tax deduction savings calculator
estimate the tax benefit
Ffrances
POST /finance/tax-deduction-savings$0.002
⚙️ Developer UtilitiesFree
Remove VAT calculator
find net price and VAT amount
Bbarbara
POST /finance/vat-reverse$0.002
⚙️ Developer UtilitiesFree
Cash runway calculator
months left from balance and monthly burn
Ssamurai
POST /finance/cash-runway$0.002
⚙️ Developer UtilitiesFree
Churn Rate Calculator
Customer or Revenue Churn
Bbarbara
POST /finance/churn-rate$0.002
⚙️ Developer UtilitiesFree
Customer lifetime value calculator
CLV from AOV, margin, lifespan
Aabuela
POST /finance/customer-lifetime-value$0.002
⚙️ Developer UtilitiesFree
MRR Growth Rate Calculator
Monthly Recurring Revenue
Kkatherine
POST /finance/mrr-growth$0.002
⚙️ Developer UtilitiesFree
Operating Margin Calculator
Calculate Operating Profit Margin
Kkatherine
POST /finance/operating-margin$0.002
⚙️ Developer UtilitiesFree
Overtime and regular pay calculator
hourly rate, OT hours, gross pay
Ssamurai
POST /finance/overtime-pay$0.002
⚙️ Developer UtilitiesFree
Selling price from markup calculator
cost plus markup to list price
PPavilion
POST /finance/selling-price-from-markup$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.