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
EV off-peak charging savings
annual peak vs off-peak electricity cost
PPavilion
POST /travel/ev-off-peak-savings$0.002
⚙️ Developer UtilitiesFree
Initial flight bearing calculator from airport coordinates
Ffrances
POST /travel/initial-flight-bearing$0.002
⚙️ Developer UtilitiesFree
Temperature at altitude calculator
standard lapse rate
Kkatherine
POST /travel/temperature-at-altitude$0.002
⚙️ Developer UtilitiesFree
Cold Temperature Altimeter Error and Altitude Correction Calculator
Kkatherine
POST /travel/altimeter-cold-error$0.002
⚙️ Developer UtilitiesFree
Contingency fuel calculator
reserve fuel as % of trip fuel
Ssamurai
POST /travel/contingency-fuel$0.002
⚙️ Developer UtilitiesFree
EV range at highway speed calculator
shorter range at higher use
Aabuela
POST /travel/ev-range-at-speed$0.002
⚙️ Developer UtilitiesFree
Horizontal sextant angle distance calculator
Bbarbara
POST /travel/horizontal-sextant-distance$0.002
⚙️ Developer UtilitiesFree
Sailboat VMG from polar calculator
boat speed and true wind angle
PPavilion
POST /travel/sailboat-polar-vmg$0.002
⚙️ Developer UtilitiesFree
Time to waypoint at knots calculator
Ffrances
POST /travel/time-to-waypoint$0.002
⚙️ Developer UtilitiesFree
Boat metacentric height stability
GM, heel & righting moment
Ssamurai
POST /travel/metacentric-stability$0.002
⚙️ Developer UtilitiesFree
Sea route great-circle distance calculator
NM and initial course
Aabuela
POST /travel/sea-great-circle$0.002
⚙️ Developer UtilitiesFree
Trip Average Spend per Day Calculator
Track Your Travel Budget
Kkatherine
POST /travel/trip-spend-per-day$0.002
⚙️ Developer UtilitiesFree
Vacation fund per paycheck calculator
save for your trip by payday
PPavilion
POST /travel/vacation-fund-per-paycheck$0.002
⚙️ Developer UtilitiesFree
Allee effect threshold calculator
population growth with critical minimum
Ssamurai
POST /bio/allee-threshold$0.002
⚙️ Developer UtilitiesFree
AT to GC Ratio Calculator for DNA Base Counts
Bbarbara
POST /bio/at-gc-ratio$0.002
⚙️ Developer UtilitiesFree
Beer Lambert concentration calculator
absorbance to molarity
Ffrances
POST /bio/beer-lambert-concentration$0.002
⚙️ Developer UtilitiesFree
Bradford protein calculator
concentration from absorbance curve
Ssamurai
POST /bio/bradford-protein$0.002
⚙️ Developer UtilitiesFree
Chilling hours calculator
hours below threshold for dormancy
Ssamurai
POST /bio/chilling-hours$0.002
⚙️ Developer UtilitiesFree
Codon Usage Fraction Calculator for Gene Codon Counts
Ffrances
POST /bio/codon-usage-fraction$0.002
⚙️ Developer UtilitiesFree
Dilution for a countable plate calculator
target colony range
Bbarbara
POST /bio/dilution-for-countable-plate$0.002
⚙️ Developer UtilitiesFree
Dilution to target OD calculator
culture and medium volumes
Ffrances
POST /bio/dilution-to-target-od$0.002
⚙️ Developer UtilitiesFree
DNA helical turns calculator from base pairs
Ffrances
POST /bio/dna-helical-turns$0.002
⚙️ Developer UtilitiesFree
Dry matter intake calculator
fresh feed weight and DM percentage
Ffrances
POST /bio/dry-matter-intake$0.002
⚙️ Developer UtilitiesFree
dsDNA mass to molar concentration calculator
ng/µL to nM
Bbarbara
POST /bio/dsdna-mass-to-molar$0.002
⚙️ Developer UtilitiesFree
dsDNA ng/µL calculator from A260 absorbance
Bbarbara
POST /bio/dsdna-ng-per-ul$0.002
⚙️ Developer UtilitiesFree
Egg Incubation Hatch Date Calculator by Bird Species
Bbarbara
POST /bio/egg-incubation-hatch-date$0.002
⚙️ Developer UtilitiesFree
Fertilizer NPK rate per hectare calculator
Kkatherine
POST /bio/fertilizer-npk-rate$0.002
⚙️ Developer UtilitiesFree
Fish stocking density calculator
pond fish count from area or volume
Ssamurai
POST /bio/fish-stocking-density$0.002
⚙️ Developer UtilitiesFree
Forage allowance calculator
available forage per unit animal live weight
PPavilion
POST /bio/forage-allowance$0.002
⚙️ Developer UtilitiesFree
Bacterial Generation Time Calculator
Kkatherine
POST /bio/generation-time$0.002
⚙️ Developer UtilitiesFree
Crop harvest index calculator
economic yield ÷ above-ground biomass
Ffrances
POST /bio/harvest-index$0.002
⚙️ Developer UtilitiesFree
Home range density calculator
animals per occupied area
Bbarbara
POST /bio/home-range-density$0.002
⚙️ Developer UtilitiesFree
Importance value index calculator for plant species
Ffrances
POST /bio/importance-value-index$0.002
⚙️ Developer UtilitiesFree
Irrigation run time calculator
water depth, flow rate, and area
Bbarbara
POST /bio/irrigation-time$0.002
⚙️ Developer UtilitiesFree
Life Table Survivorship Calculator
Calculate Age-Specific Survivorship
Kkatherine
POST /bio/life-table-survivorship$0.002
⚙️ Developer UtilitiesFree
Lime requirement calculator
agricultural lime from buffer pH and area
PPavilion
POST /bio/lime-requirement$0.002
⚙️ Developer UtilitiesFree
Livestock daily water requirement
herd water by head count
Ssamurai
POST /bio/livestock-water-requirement$0.002
⚙️ Developer UtilitiesFree
Additive Map Distance Calculator with Double Crossover Correction
Kkatherine
POST /bio/map-units-additive$0.002
⚙️ Developer UtilitiesFree
Molar absorptivity calculator
Beer-Lambert extinction coefficient
Kkatherine
POST /bio/molar-absorptivity$0.002
⚙️ Developer UtilitiesFree
Most probable number (MPN)
density from positive tubes
Ssamurai
POST /bio/most-probable-number$0.002
⚙️ Developer UtilitiesFree
DNA Nanograms to Copies Calculator by Base-Pair Length
Kkatherine
POST /bio/ng-to-copies-dna$0.002
⚙️ Developer UtilitiesFree
DNA concentration from A260 calculator for DNA and RNA
Ffrances
POST /bio/nucleic-acid-concentration-a260$0.002
⚙️ Developer UtilitiesFree
OD600 to CFU calculator
viable cells/mL from optical density
Ssamurai
POST /bio/od-to-cfu$0.002
⚙️ Developer UtilitiesFree
Oligo nmol to µg calculator
mass from base composition MW
Ssamurai
POST /bio/oligo-nmol-to-ug$0.002
⚙️ Developer UtilitiesFree
Pasture carrying capacity calculator
Kkatherine
POST /bio/pasture-carrying-capacity$0.002
⚙️ Developer UtilitiesFree
Pedigree combined probability calculator
offspring genotype risk
Kkatherine
POST /bio/pedigree-probability-combined$0.002
⚙️ Developer UtilitiesFree
Petersen–Chapman population estimate
bias-adjusted mark–recapture
PPavilion
POST /bio/petersen-chapman-adjusted$0.002
⚙️ Developer UtilitiesFree
Pond Fish Biomass Calculator
Total Stock Weight
Ffrances
POST /bio/pond-fish-biomass$0.002
⚙️ Developer UtilitiesFree
Population density calculator for habitat area or volume
Ffrances
POST /bio/population-density$0.002
⚙️ Developer UtilitiesFree
Population Exponential Growth Calculator
Kkatherine
POST /bio/population-exponential-growth$0.002
⚙️ Developer UtilitiesFree
Population percent change calculator
census growth or decline
Ssamurai
POST /bio/population-percent-change$0.002
⚙️ Developer UtilitiesFree
PPM solution preparation calculator
solute mass needed
Kkatherine
POST /bio/ppm-solution-prep$0.002
⚙️ Developer UtilitiesFree
Probability all offspring are the same sex calculator
Ffrances
POST /bio/probability-all-offspring-same-sex$0.002
⚙️ Developer UtilitiesFree
Protein net charge calculator
estimate peptide charge at any pH
Kkatherine
POST /bio/protein-net-charge$0.002
⚙️ Developer UtilitiesFree
Probability of two recessive traits
dihybrid Punnett calculator
Ssamurai
POST /bio/punnett-probability-two-recessive$0.002
⚙️ Developer UtilitiesFree
Protein purification calculator
recovery and purification fold
Ffrances
POST /bio/purification-recovery-fold$0.002
⚙️ Developer UtilitiesFree
Recombination Frequency Calculator for Two-Point Crosses
Kkatherine
POST /bio/recombination-frequency$0.002
⚙️ Developer UtilitiesFree
Rule of 70 Population Calculator
Estimate Doubling Time
Kkatherine
POST /bio/rule-of-70-population$0.002
⚙️ Developer UtilitiesFree
Secondary Production Calculator for Population Biomass
Bbarbara
POST /bio/secondary-production$0.002
⚙️ Developer UtilitiesFree
Seeding rate from spacing calculator
seeds per hectare
Ffrances
POST /bio/seeding-rate-from-spacing$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.